Introduced wrapper macros snew(), snewn() and sresize() for the
[u/mdw/putty] / windlg.c
index 0120a3b..6656c96 100644 (file)
--- a/windlg.c
+++ b/windlg.c
@@ -3,6 +3,8 @@
 #include <commdlg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <limits.h>
+#include <assert.h>
 #include <ctype.h>
 #include <time.h>
 
 #include "winstuff.h"
 #include "win_res.h"
 #include "storage.h"
+#include "dialog.h"
+
+#ifdef MSVC4
+#define TVINSERTSTRUCT  TV_INSERTSTRUCT
+#define TVITEM          TV_ITEM
+#define ICON_BIG        1
+#endif
+
+/*
+ * These are the various bits of data required to handle the
+ * portable-dialog stuff in the config box. Having them at file
+ * scope in here isn't too bad a place to put them; if we were ever
+ * to need more than one config box per process we could always
+ * shift them to a per-config-box structure stored in GWL_USERDATA.
+ */
+static struct controlbox *ctrlbox;
+/*
+ * ctrls_base holds the OK and Cancel buttons: the controls which
+ * are present in all dialog panels. ctrls_panel holds the ones
+ * which change from panel to panel.
+ */
+static struct winctrls ctrls_base, ctrls_panel;
+static struct dlgparam dp;
 
 static char **events = NULL;
 static int nevents = 0, negsize = 0;
 
-static int readytogo;
+static int requested_help;
+
+extern Config cfg;                    /* defined in window.c */
+
+struct sesslist sesslist;             /* exported to window.c */
+
+#define PRINTER_DISABLED_STRING "None (printing disabled)"
 
 void force_normal(HWND hwnd)
 {
@@ -23,115 +54,111 @@ void force_normal(HWND hwnd)
 
     WINDOWPLACEMENT wp;
 
-    if(recurse) return;
+    if (recurse)
+       return;
     recurse = 1;
 
     wp.length = sizeof(wp);
-    if (GetWindowPlacement(hwnd, &wp) && wp.showCmd == SW_SHOWMAXIMIZED)
-    {
+    if (GetWindowPlacement(hwnd, &wp) && wp.showCmd == SW_SHOWMAXIMIZED) {
        wp.showCmd = SW_SHOWNORMAL;
        SetWindowPlacement(hwnd, &wp);
     }
     recurse = 0;
 }
 
-static void MyGetDlgItemInt (HWND hwnd, int id, int *result) {
-    BOOL ok;
-    int n;
-    n = GetDlgItemInt (hwnd, id, &ok, FALSE);
-    if (ok)
-       *result = n;
-}
-
-static int CALLBACK LogProc (HWND hwnd, UINT msg,
-                            WPARAM wParam, LPARAM lParam) {
+static int CALLBACK LogProc(HWND hwnd, UINT msg,
+                           WPARAM wParam, LPARAM lParam)
+{
     int i;
 
     switch (msg) {
       case WM_INITDIALOG:
-        {
-            static int tabs[4] = {78, 108};
-            SendDlgItemMessage (hwnd, IDN_LIST, LB_SETTABSTOPS, 2,
-                                (LPARAM) tabs);
-        }
-       for (i=0; i<nevents; i++)
-           SendDlgItemMessage (hwnd, IDN_LIST, LB_ADDSTRING,
-                               0, (LPARAM)events[i]);
+       {
+           static int tabs[4] = { 78, 108 };
+           SendDlgItemMessage(hwnd, IDN_LIST, LB_SETTABSTOPS, 2,
+                              (LPARAM) tabs);
+       }
+       for (i = 0; i < nevents; i++)
+           SendDlgItemMessage(hwnd, IDN_LIST, LB_ADDSTRING,
+                              0, (LPARAM) events[i]);
        return 1;
       case WM_COMMAND:
        switch (LOWORD(wParam)) {
          case IDOK:
          case IDCANCEL:
            logbox = NULL;
-            SetActiveWindow(GetParent(hwnd));
-           DestroyWindow (hwnd);
+           SetActiveWindow(GetParent(hwnd));
+           DestroyWindow(hwnd);
            return 0;
-          case IDN_COPY:
+         case IDN_COPY:
            if (HIWORD(wParam) == BN_CLICKED ||
                HIWORD(wParam) == BN_DOUBLECLICKED) {
-                int selcount;
-                int *selitems;
-                selcount = SendDlgItemMessage(hwnd, IDN_LIST,
-                                              LB_GETSELCOUNT, 0, 0);
-                if (selcount == 0) {   /* don't even try to copy zero items */
-                    MessageBeep(0);
-                    break;
-                }
-                    
-                selitems = smalloc(selcount * sizeof(int));
-                if (selitems) {
-                    int count = SendDlgItemMessage(hwnd, IDN_LIST,
-                                                   LB_GETSELITEMS,
-                                                   selcount, (LPARAM)selitems);
-                    int i;
-                    int size;
-                    char *clipdata;
-                    static unsigned char sel_nl[] = SEL_NL;
-
-                    if (count == 0) {  /* can't copy zero stuff */
-                        MessageBeep(0);
-                        break;
-                    }
-
-                    size = 0;
-                    for (i = 0; i < count; i++)
-                        size += strlen(events[selitems[i]]) + sizeof(sel_nl);
-
-                    clipdata = smalloc(size);
-                    if (clipdata) {
-                        char *p = clipdata;
-                        for (i = 0; i < count; i++) {
-                            char *q = events[selitems[i]];
-                            int qlen = strlen(q);
-                            memcpy(p, q, qlen);
-                            p += qlen;
-                            memcpy(p, sel_nl, sizeof(sel_nl));
-                            p += sizeof(sel_nl);
-                        }
-                        write_clip(clipdata, size, TRUE);
-                        sfree(clipdata);
-                    }
-                    sfree(selitems);
-
-                    for (i = 0; i < nevents; i++)
-                        SendDlgItemMessage(hwnd, IDN_LIST, LB_SETSEL,
-                                           FALSE, i);
-                }
-            }
-            return 0;
+               int selcount;
+               int *selitems;
+               selcount = SendDlgItemMessage(hwnd, IDN_LIST,
+                                             LB_GETSELCOUNT, 0, 0);
+               if (selcount == 0) {   /* don't even try to copy zero items */
+                   MessageBeep(0);
+                   break;
+               }
+
+               selitems = snewn(selcount, int);
+               if (selitems) {
+                   int count = SendDlgItemMessage(hwnd, IDN_LIST,
+                                                  LB_GETSELITEMS,
+                                                  selcount,
+                                                  (LPARAM) selitems);
+                   int i;
+                   int size;
+                   char *clipdata;
+                   static unsigned char sel_nl[] = SEL_NL;
+
+                   if (count == 0) {  /* can't copy zero stuff */
+                       MessageBeep(0);
+                       break;
+                   }
+
+                   size = 0;
+                   for (i = 0; i < count; i++)
+                       size +=
+                           strlen(events[selitems[i]]) + sizeof(sel_nl);
+
+                   clipdata = snewn(size, char);
+                   if (clipdata) {
+                       char *p = clipdata;
+                       for (i = 0; i < count; i++) {
+                           char *q = events[selitems[i]];
+                           int qlen = strlen(q);
+                           memcpy(p, q, qlen);
+                           p += qlen;
+                           memcpy(p, sel_nl, sizeof(sel_nl));
+                           p += sizeof(sel_nl);
+                       }
+                       write_aclip(NULL, clipdata, size, TRUE);
+                       sfree(clipdata);
+                   }
+                   sfree(selitems);
+
+                   for (i = 0; i < nevents; i++)
+                       SendDlgItemMessage(hwnd, IDN_LIST, LB_SETSEL,
+                                          FALSE, i);
+               }
+           }
+           return 0;
        }
        return 0;
       case WM_CLOSE:
        logbox = NULL;
-        SetActiveWindow(GetParent(hwnd));
-       DestroyWindow (hwnd);
+       SetActiveWindow(GetParent(hwnd));
+       DestroyWindow(hwnd);
        return 0;
     }
     return 0;
 }
 
-static int CALLBACK LicenceProc (HWND hwnd, UINT msg,
-                                WPARAM wParam, LPARAM lParam) {
+static int CALLBACK LicenceProc(HWND hwnd, UINT msg,
+                               WPARAM wParam, LPARAM lParam)
+{
     switch (msg) {
       case WM_INITDIALOG:
        return 1;
@@ -149,36 +176,37 @@ static int CALLBACK LicenceProc (HWND hwnd, UINT msg,
     return 0;
 }
 
-static int CALLBACK AboutProc (HWND hwnd, UINT msg,
-                              WPARAM wParam, LPARAM lParam) {
+static int CALLBACK AboutProc(HWND hwnd, UINT msg,
+                             WPARAM wParam, LPARAM lParam)
+{
     switch (msg) {
       case WM_INITDIALOG:
-        SetDlgItemText (hwnd, IDA_VERSION, ver);
+       SetDlgItemText(hwnd, IDA_VERSION, ver);
        return 1;
       case WM_COMMAND:
        switch (LOWORD(wParam)) {
          case IDOK:
-          case IDCANCEL:
-            EndDialog(hwnd, TRUE);
+         case IDCANCEL:
+           EndDialog(hwnd, TRUE);
            return 0;
          case IDA_LICENCE:
            EnableWindow(hwnd, 0);
-           DialogBox (hinst, MAKEINTRESOURCE(IDD_LICENCEBOX),
-                      NULL, LicenceProc);
+           DialogBox(hinst, MAKEINTRESOURCE(IDD_LICENCEBOX),
+                     NULL, LicenceProc);
            EnableWindow(hwnd, 1);
-            SetActiveWindow(hwnd);
+           SetActiveWindow(hwnd);
            return 0;
 
-          case IDA_WEB:
-            /* Load web browser */
-            ShellExecute(hwnd, "open",
-                         "http://www.chiark.greenend.org.uk/~sgtatham/putty/",
-                         0, 0, SW_SHOWDEFAULT);
-            return 0;
+         case IDA_WEB:
+           /* Load web browser */
+           ShellExecute(hwnd, "open",
+                        "http://www.chiark.greenend.org.uk/~sgtatham/putty/",
+                        0, 0, SW_SHOWDEFAULT);
+           return 0;
        }
        return 0;
       case WM_CLOSE:
-        EndDialog(hwnd, TRUE);
+       EndDialog(hwnd, TRUE);
        return 0;
     }
     return 0;
@@ -187,918 +215,111 @@ static int CALLBACK AboutProc (HWND hwnd, UINT msg,
 /*
  * Null dialog procedure.
  */
-static int CALLBACK NullDlgProc (HWND hwnd, UINT msg,
-                                 WPARAM wParam, LPARAM lParam) {
+static int CALLBACK NullDlgProc(HWND hwnd, UINT msg,
+                               WPARAM wParam, LPARAM lParam)
+{
     return 0;
 }
 
-static char savedsession[2048];
-
-enum { IDCX_ABOUT = IDC_ABOUT, IDCX_TVSTATIC, IDCX_TREEVIEW, controlstartvalue,
-
-    sessionpanelstart,
-    IDC_TITLE_SESSION,
-    IDC_BOX_SESSION1,
-    IDC_BOX_SESSION2,
-    IDC_BOX_SESSION3,
-    IDC_HOSTSTATIC,
-    IDC_HOST,
-    IDC_PORTSTATIC,
-    IDC_PORT,
-    IDC_PROTSTATIC,
-    IDC_PROTRAW,
-    IDC_PROTTELNET,
-    IDC_PROTRLOGIN,
-    IDC_PROTSSH,
-    IDC_SESSSTATIC,
-    IDC_SESSEDIT,
-    IDC_SESSLIST,
-    IDC_SESSLOAD,
-    IDC_SESSSAVE,
-    IDC_SESSDEL,
-    IDC_CLOSEEXIT,
-    IDC_COEALWAYS,
-    IDC_COENEVER,
-    IDC_COENORMAL,
-    sessionpanelend,
-
-    loggingpanelstart,
-    IDC_BOX_LOGGING1,
-    IDC_LSTATSTATIC,
-    IDC_LSTATOFF,
-    IDC_LSTATASCII,
-    IDC_LSTATRAW,
-    IDC_LGFSTATIC,
-    IDC_LGFEDIT,
-    IDC_LGFBUTTON,
-    loggingpanelend,
-
-    keyboardpanelstart,
-    IDC_TITLE_KEYBOARD,
-    IDC_BOX_KEYBOARD1,
-    IDC_BOX_KEYBOARD2,
-    IDC_BOX_KEYBOARD3,
-    IDC_DELSTATIC,
-    IDC_DEL008,
-    IDC_DEL127,
-    IDC_HOMESTATIC,
-    IDC_HOMETILDE,
-    IDC_HOMERXVT,
-    IDC_FUNCSTATIC,
-    IDC_FUNCTILDE,
-    IDC_FUNCLINUX,
-    IDC_FUNCXTERM,
-    IDC_FUNCVT400,
-    IDC_KPSTATIC,
-    IDC_KPNORMAL,
-    IDC_KPAPPLIC,
-    IDC_KPNH,
-    IDC_NOAPPLICK,
-    IDC_NOAPPLICC,
-    IDC_CURSTATIC,
-    IDC_CURNORMAL,
-    IDC_CURAPPLIC,
-    IDC_COMPOSEKEY,
-    keyboardpanelend,
-
-    terminalpanelstart,
-    IDC_TITLE_TERMINAL,
-    IDC_BOX_TERMINAL1,
-    IDC_BOX_TERMINAL2,
-    IDC_WRAPMODE,
-    IDC_DECOM,
-    IDC_LFHASCR,
-    IDC_BEEP,
-    IDC_BCE,
-    IDC_BLINKTEXT,
-    IDC_ECHOSTATIC,
-    IDC_ECHOBACKEND,
-    IDC_ECHOYES,
-    IDC_ECHONO,
-    IDC_EDITSTATIC,
-    IDC_EDITBACKEND,
-    IDC_EDITYES,
-    IDC_EDITNO,
-    terminalpanelend,
-
-    windowpanelstart,
-    IDC_TITLE_WINDOW,
-    IDC_BOX_WINDOW1,
-    IDC_BOX_WINDOW2,
-    IDC_BOX_WINDOW3,
-    IDC_ROWSSTATIC,
-    IDC_ROWSEDIT,
-    IDC_COLSSTATIC,
-    IDC_COLSEDIT,
-    IDC_LOCKSIZE,
-    IDC_SCROLLBAR,
-    IDC_CLOSEWARN,
-    IDC_SAVESTATIC,
-    IDC_SAVEEDIT,
-    IDC_ALTF4,
-    IDC_ALTSPACE,
-    IDC_ALTONLY,
-    IDC_SCROLLKEY,
-    IDC_SCROLLDISP,
-    IDC_ALWAYSONTOP,
-    windowpanelend,
-
-    appearancepanelstart,
-    IDC_TITLE_APPEARANCE,
-    IDC_BOX_APPEARANCE1,
-    IDC_BOX_APPEARANCE2,
-    IDC_BOX_APPEARANCE3,
-    IDC_BOX_APPEARANCE4,
-    IDC_CURSORSTATIC,
-    IDC_CURBLOCK,
-    IDC_CURUNDER,
-    IDC_CURVERT,
-    IDC_BLINKCUR,
-    IDC_FONTSTATIC,
-    IDC_CHOOSEFONT,
-    IDC_WINTITLE,
-    IDC_WINEDIT,
-    IDC_WINNAME,
-    IDC_HIDEMOUSE,
-    appearancepanelend,
-
-    connectionpanelstart,
-    IDC_TITLE_CONNECTION,
-    IDC_BOX_CONNECTION1,
-    IDC_BOX_CONNECTION2,
-    IDC_TTSTATIC,
-    IDC_TTEDIT,
-    IDC_LOGSTATIC,
-    IDC_LOGEDIT,
-    IDC_PINGSTATIC,
-    IDC_PINGEDIT,
-    connectionpanelend,
-
-    telnetpanelstart,
-    IDC_TITLE_TELNET,
-    IDC_BOX_TELNET1,
-    IDC_BOX_TELNET2,
-    IDC_TSSTATIC,
-    IDC_TSEDIT,
-    IDC_ENVSTATIC,
-    IDC_VARSTATIC,
-    IDC_VAREDIT,
-    IDC_VALSTATIC,
-    IDC_VALEDIT,
-    IDC_ENVLIST,
-    IDC_ENVADD,
-    IDC_ENVREMOVE,
-    IDC_EMSTATIC,
-    IDC_EMBSD,
-    IDC_EMRFC,
-    telnetpanelend,
-
-    rloginpanelstart,
-    IDC_TITLE_RLOGIN,
-    IDC_BOX_RLOGIN1,
-    IDC_BOX_RLOGIN2,
-    IDC_R_TSSTATIC,
-    IDC_R_TSEDIT,
-    IDC_RLLUSERSTATIC,
-    IDC_RLLUSEREDIT,
-    rloginpanelend,
-
-    sshpanelstart,
-    IDC_TITLE_SSH,
-    IDC_BOX_SSH1,
-    IDC_BOX_SSH2,
-    IDC_BOX_SSH3,
-    IDC_NOPTY,
-    IDC_CIPHERSTATIC,
-    IDC_CIPHER3DES,
-    IDC_CIPHERBLOWF,
-    IDC_CIPHERDES,
-    IDC_CIPHERAES,
-    IDC_BUGGYMAC,
-    IDC_AUTHTIS,
-    IDC_PKSTATIC,
-    IDC_PKEDIT,
-    IDC_PKBUTTON,
-    IDC_SSHPROTSTATIC,
-    IDC_SSHPROT1,
-    IDC_SSHPROT2,
-    IDC_AGENTFWD,
-    IDC_CMDSTATIC,
-    IDC_CMDEDIT,
-    IDC_COMPRESS,
-    sshpanelend,
-
-    selectionpanelstart,
-    IDC_TITLE_SELECTION,
-    IDC_BOX_SELECTION1,
-    IDC_BOX_SELECTION2,
-    IDC_BOX_SELECTION3,
-    IDC_MBSTATIC,
-    IDC_MBWINDOWS,
-    IDC_MBXTERM,
-    IDC_CCSTATIC,
-    IDC_CCLIST,
-    IDC_CCSET,
-    IDC_CCSTATIC2,
-    IDC_CCEDIT,
-    IDC_RAWCNP,
-    selectionpanelend,
-
-    colourspanelstart,
-    IDC_TITLE_COLOURS,
-    IDC_BOX_COLOURS1,
-    IDC_BOX_COLOURS2,
-    IDC_BOLDCOLOUR,
-    IDC_PALETTE,
-    IDC_COLOURSTATIC,
-    IDC_COLOURLIST,
-    IDC_RSTATIC,
-    IDC_GSTATIC,
-    IDC_BSTATIC,
-    IDC_RVALUE,
-    IDC_GVALUE,
-    IDC_BVALUE,
-    IDC_CHANGE,
-    colourspanelend,
-
-    translationpanelstart,
-    IDC_TITLE_TRANSLATION,
-    IDC_BOX_TRANSLATION1,
-    IDC_BOX_TRANSLATION2,
-    IDC_BOX_TRANSLATION3,
-    IDC_XLATSTATIC,
-    IDC_NOXLAT,
-    IDC_KOI8WIN1251,
-    IDC_88592WIN1250,
-    IDC_88592CP852,
-    IDC_CAPSLOCKCYR,
-    IDC_VTSTATIC,
-    IDC_VTXWINDOWS,
-    IDC_VTOEMANSI,
-    IDC_VTOEMONLY,
-    IDC_VTPOORMAN,
-    translationpanelend,
-
-    tunnelspanelstart,
-    IDC_TITLE_TUNNELS,
-    IDC_BOX_TUNNELS,
-    IDC_X11_FORWARD,
-    IDC_X11_DISPSTATIC,
-    IDC_X11_DISPLAY,
-    tunnelspanelend,
-
-    controlendvalue
+enum {
+    IDCX_ABOUT = IDC_ABOUT,
+    IDCX_TVSTATIC,
+    IDCX_TREEVIEW,
+    IDCX_STDBASE,
+    IDCX_PANELBASE = IDCX_STDBASE + 32
 };
 
-static const char *const colours[] = {
-    "Default Foreground", "Default Bold Foreground",
-    "Default Background", "Default Bold Background",
-    "Cursor Text", "Cursor Colour",
-    "ANSI Black", "ANSI Black Bold",
-    "ANSI Red", "ANSI Red Bold",
-    "ANSI Green", "ANSI Green Bold",
-    "ANSI Yellow", "ANSI Yellow Bold",
-    "ANSI Blue", "ANSI Blue Bold",
-    "ANSI Magenta", "ANSI Magenta Bold",
-    "ANSI Cyan", "ANSI Cyan Bold",
-    "ANSI White", "ANSI White Bold"
-};
-static const int permcolour[] = {
-    TRUE, FALSE, TRUE, FALSE, TRUE, TRUE,
-    TRUE, FALSE, TRUE, FALSE, TRUE, FALSE, TRUE, FALSE,
-    TRUE, FALSE, TRUE, FALSE, TRUE, FALSE, TRUE, FALSE
-};
-
-static void fmtfont (char *buf) {
-    sprintf (buf, "Font: %s, ", cfg.font);
-    if (cfg.fontisbold)
-       strcat(buf, "bold, ");
-    if (cfg.fontheight == 0)
-       strcat (buf, "default height");
-    else
-       sprintf (buf+strlen(buf), "%d-point",
-                (cfg.fontheight < 0 ? -cfg.fontheight : cfg.fontheight));
-}
-
-static void init_dlg_ctrls(HWND hwnd) {
-    int i;
-    char fontstatic[256];
-
-    SetDlgItemText (hwnd, IDC_HOST, cfg.host);
-    SetDlgItemText (hwnd, IDC_SESSEDIT, savedsession);
-    {
-       int i, n;
-       n = SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_GETCOUNT, 0, 0);
-       for (i=n; i-- >0 ;)
-           SendDlgItemMessage (hwnd, IDC_SESSLIST,
-                                   LB_DELETESTRING, i, 0);
-        for (i = 0; i < nsessions; i++)
-            SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_ADDSTRING,
-                                0, (LPARAM) (sessions[i]));
-    }
-    SetDlgItemInt (hwnd, IDC_PORT, cfg.port, FALSE);
-    CheckRadioButton (hwnd, IDC_PROTRAW, IDC_PROTSSH,
-                     cfg.protocol==PROT_SSH ? IDC_PROTSSH :
-                     cfg.protocol==PROT_TELNET ? IDC_PROTTELNET :
-                      cfg.protocol==PROT_RLOGIN ? IDC_PROTRLOGIN : IDC_PROTRAW );
-    SetDlgItemInt (hwnd, IDC_PINGEDIT, cfg.ping_interval, FALSE);
-
-    CheckRadioButton (hwnd, IDC_DEL008, IDC_DEL127,
-                     cfg.bksp_is_delete ? IDC_DEL127 : IDC_DEL008);
-    CheckRadioButton (hwnd, IDC_HOMETILDE, IDC_HOMERXVT,
-                     cfg.rxvt_homeend ? IDC_HOMERXVT : IDC_HOMETILDE);
-    CheckRadioButton (hwnd, IDC_FUNCTILDE, IDC_FUNCVT400,
-                      cfg.funky_type == 0 ? IDC_FUNCTILDE :
-                      cfg.funky_type == 1 ? IDC_FUNCLINUX :
-                      cfg.funky_type == 2 ? IDC_FUNCXTERM :
-                      cfg.funky_type == 3 ? IDC_FUNCVT400 :
-                      IDC_FUNCTILDE );
-    CheckDlgButton (hwnd, IDC_NOAPPLICC, cfg.no_applic_c);
-    CheckDlgButton (hwnd, IDC_NOAPPLICK, cfg.no_applic_k);
-    CheckRadioButton (hwnd, IDC_CURNORMAL, IDC_CURAPPLIC,
-                     cfg.app_cursor ? IDC_CURAPPLIC : IDC_CURNORMAL);
-    CheckRadioButton (hwnd, IDC_KPNORMAL, IDC_KPNH,
-                     cfg.nethack_keypad ? IDC_KPNH :
-                     cfg.app_keypad ? IDC_KPAPPLIC : IDC_KPNORMAL);
-    CheckDlgButton (hwnd, IDC_ALTF4, cfg.alt_f4);
-    CheckDlgButton (hwnd, IDC_ALTSPACE, cfg.alt_space);
-    CheckDlgButton (hwnd, IDC_ALTONLY, cfg.alt_only);
-    CheckDlgButton (hwnd, IDC_COMPOSEKEY, cfg.compose_key);
-    CheckRadioButton (hwnd, IDC_ECHOBACKEND, IDC_ECHONO,
-                     cfg.localecho == LD_BACKEND ? IDC_ECHOBACKEND:
-                      cfg.localecho == LD_YES ? IDC_ECHOYES : IDC_ECHONO);
-    CheckRadioButton (hwnd, IDC_EDITBACKEND, IDC_EDITNO,
-                     cfg.localedit == LD_BACKEND ? IDC_EDITBACKEND:
-                      cfg.localedit == LD_YES ? IDC_EDITYES : IDC_EDITNO);
-    CheckDlgButton (hwnd, IDC_ALWAYSONTOP, cfg.alwaysontop);
-    CheckDlgButton (hwnd, IDC_SCROLLKEY, cfg.scroll_on_key);
-    CheckDlgButton (hwnd, IDC_SCROLLDISP, cfg.scroll_on_disp);
-
-    CheckDlgButton (hwnd, IDC_WRAPMODE, cfg.wrap_mode);
-    CheckDlgButton (hwnd, IDC_DECOM, cfg.dec_om);
-    CheckDlgButton (hwnd, IDC_LFHASCR, cfg.lfhascr);
-    SetDlgItemInt (hwnd, IDC_ROWSEDIT, cfg.height, FALSE);
-    SetDlgItemInt (hwnd, IDC_COLSEDIT, cfg.width, FALSE);
-    SetDlgItemInt (hwnd, IDC_SAVEEDIT, cfg.savelines, FALSE);
-    fmtfont (fontstatic);
-    SetDlgItemText (hwnd, IDC_FONTSTATIC, fontstatic);
-    CheckDlgButton (hwnd, IDC_BEEP, cfg.beep);
-    CheckDlgButton (hwnd, IDC_BCE, cfg.bce);
-    CheckDlgButton (hwnd, IDC_BLINKTEXT, cfg.blinktext);
-
-    SetDlgItemText (hwnd, IDC_WINEDIT, cfg.wintitle);
-    CheckDlgButton (hwnd, IDC_WINNAME, cfg.win_name_always);
-    CheckDlgButton (hwnd, IDC_HIDEMOUSE, cfg.hide_mouseptr);
-    CheckRadioButton (hwnd, IDC_CURBLOCK, IDC_CURVERT,
-                     cfg.cursor_type==0 ? IDC_CURBLOCK :
-                     cfg.cursor_type==1 ? IDC_CURUNDER : IDC_CURVERT);
-    CheckDlgButton (hwnd, IDC_BLINKCUR, cfg.blink_cur);
-    CheckDlgButton (hwnd, IDC_SCROLLBAR, cfg.scrollbar);
-    CheckDlgButton (hwnd, IDC_LOCKSIZE, cfg.locksize);
-    CheckRadioButton (hwnd, IDC_COEALWAYS, IDC_COENORMAL,
-                      cfg.close_on_exit==COE_NORMAL ? IDC_COENORMAL :
-                      cfg.close_on_exit==COE_NEVER ? IDC_COENEVER : IDC_COEALWAYS);
-    CheckDlgButton (hwnd, IDC_CLOSEWARN, cfg.warn_on_close);
-
-    SetDlgItemText (hwnd, IDC_TTEDIT, cfg.termtype);
-    SetDlgItemText (hwnd, IDC_TSEDIT, cfg.termspeed);
-    SetDlgItemText (hwnd, IDC_R_TSEDIT, cfg.termspeed);
-    SetDlgItemText (hwnd, IDC_RLLUSEREDIT, cfg.localusername);
-    SetDlgItemText (hwnd, IDC_LOGEDIT, cfg.username);
-    SetDlgItemText (hwnd, IDC_LGFEDIT, cfg.logfilename);
-    CheckRadioButton(hwnd, IDC_LSTATOFF, IDC_LSTATRAW,
-                    cfg.logtype == 0 ? IDC_LSTATOFF :
-                    cfg.logtype == 1 ? IDC_LSTATASCII :
-                    IDC_LSTATRAW);
-    {
-       char *p = cfg.environmt;
-       while (*p) {
-           SendDlgItemMessage (hwnd, IDC_ENVLIST, LB_ADDSTRING, 0,
-                               (LPARAM) p);
-           p += strlen(p)+1;
-       }
-    }
-    CheckRadioButton (hwnd, IDC_EMBSD, IDC_EMRFC,
-                     cfg.rfc_environ ? IDC_EMRFC : IDC_EMBSD);
-
-    SetDlgItemText (hwnd, IDC_TTEDIT, cfg.termtype);
-    SetDlgItemText (hwnd, IDC_LOGEDIT, cfg.username);
-    CheckDlgButton (hwnd, IDC_NOPTY, cfg.nopty);
-    CheckDlgButton (hwnd, IDC_COMPRESS, cfg.compression);
-    CheckDlgButton (hwnd, IDC_BUGGYMAC, cfg.buggymac);
-    CheckDlgButton (hwnd, IDC_AGENTFWD, cfg.agentfwd);
-    CheckRadioButton (hwnd, IDC_CIPHER3DES, IDC_CIPHERAES,
-                     cfg.cipher == CIPHER_BLOWFISH ? IDC_CIPHERBLOWF :
-                     cfg.cipher == CIPHER_DES ? IDC_CIPHERDES :
-                     cfg.cipher == CIPHER_AES ? IDC_CIPHERAES :
-                     IDC_CIPHER3DES);
-    CheckRadioButton (hwnd, IDC_SSHPROT1, IDC_SSHPROT2,
-                     cfg.sshprot == 1 ? IDC_SSHPROT1 : IDC_SSHPROT2);
-    CheckDlgButton (hwnd, IDC_AUTHTIS, cfg.try_tis_auth);
-    SetDlgItemText (hwnd, IDC_PKEDIT, cfg.keyfile);
-    SetDlgItemText (hwnd, IDC_CMDEDIT, cfg.remote_cmd);
-
-    CheckRadioButton (hwnd, IDC_MBWINDOWS, IDC_MBXTERM,
-                     cfg.mouse_is_xterm ? IDC_MBXTERM : IDC_MBWINDOWS);
-    CheckDlgButton (hwnd, IDC_RAWCNP, cfg.rawcnp);
-    {
-       static int tabs[4] = {25, 61, 96, 128};
-       SendDlgItemMessage (hwnd, IDC_CCLIST, LB_SETTABSTOPS, 4,
-                           (LPARAM) tabs);
-    }
-    for (i=0; i<256; i++) {
-       char str[100];
-       sprintf(str, "%d\t(0x%02X)\t%c\t%d", i, i,
-               (i>=0x21 && i != 0x7F) ? i : ' ',
-               cfg.wordness[i]);
-       SendDlgItemMessage (hwnd, IDC_CCLIST, LB_ADDSTRING, 0,
-                           (LPARAM) str);
-    }
-
-    CheckDlgButton (hwnd, IDC_BOLDCOLOUR, cfg.bold_colour);
-    CheckDlgButton (hwnd, IDC_PALETTE, cfg.try_palette);
-    {
-       int i, n;
-       n = SendDlgItemMessage (hwnd, IDC_COLOURLIST, LB_GETCOUNT, 0, 0);
-       for (i=n; i-- >0 ;)
-           SendDlgItemMessage (hwnd, IDC_COLOURLIST,
-                                   LB_DELETESTRING, i, 0);
-       for (i=0; i<22; i++)
-           if (cfg.bold_colour || permcolour[i])
-               SendDlgItemMessage (hwnd, IDC_COLOURLIST, LB_ADDSTRING, 0,
-                                   (LPARAM) colours[i]);
-    }
-    SendDlgItemMessage (hwnd, IDC_COLOURLIST, LB_SETCURSEL, 0, 0);
-    SetDlgItemInt (hwnd, IDC_RVALUE, cfg.colours[0][0], FALSE);
-    SetDlgItemInt (hwnd, IDC_GVALUE, cfg.colours[0][1], FALSE);
-    SetDlgItemInt (hwnd, IDC_BVALUE, cfg.colours[0][2], FALSE);
-
-    CheckRadioButton (hwnd, IDC_NOXLAT, IDC_88592CP852,
-                     cfg.xlat_88592w1250 ? IDC_88592WIN1250 :
-                     cfg.xlat_88592cp852 ? IDC_88592CP852 :
-                     cfg.xlat_enablekoiwin ? IDC_KOI8WIN1251 :
-                     IDC_NOXLAT);
-    CheckDlgButton (hwnd, IDC_CAPSLOCKCYR, cfg.xlat_capslockcyr);
-    CheckRadioButton (hwnd, IDC_VTXWINDOWS, IDC_VTPOORMAN,
-                     cfg.vtmode == VT_XWINDOWS ? IDC_VTXWINDOWS :
-                     cfg.vtmode == VT_OEMANSI ? IDC_VTOEMANSI :
-                     cfg.vtmode == VT_OEMONLY ? IDC_VTOEMONLY :
-                     IDC_VTPOORMAN);
-
-    CheckDlgButton (hwnd, IDC_X11_FORWARD, cfg.x11_forward);
-    SetDlgItemText (hwnd, IDC_X11_DISPLAY, cfg.x11_display);
-}
-
 struct treeview_faff {
     HWND treeview;
     HTREEITEM lastat[4];
 };
 
 static HTREEITEM treeview_insert(struct treeview_faff *faff,
-                                 int level, char *text) {
+                                int level, char *text, char *path)
+{
     TVINSERTSTRUCT ins;
     int i;
     HTREEITEM newitem;
-    ins.hParent = (level > 0 ? faff->lastat[level-1] : TVI_ROOT);
+    ins.hParent = (level > 0 ? faff->lastat[level - 1] : TVI_ROOT);
     ins.hInsertAfter = faff->lastat[level];
 #if _WIN32_IE >= 0x0400 && defined NONAMELESSUNION
 #define INSITEM DUMMYUNIONNAME.item
 #else
 #define INSITEM item
 #endif
-    ins.INSITEM.mask = TVIF_TEXT;
+    ins.INSITEM.mask = TVIF_TEXT | TVIF_PARAM;
     ins.INSITEM.pszText = text;
+    ins.INSITEM.cchTextMax = strlen(text)+1;
+    ins.INSITEM.lParam = (LPARAM)path;
     newitem = TreeView_InsertItem(faff->treeview, &ins);
     if (level > 0)
-        TreeView_Expand(faff->treeview, faff->lastat[level-1], TVE_EXPAND);
+       TreeView_Expand(faff->treeview, faff->lastat[level - 1],
+                       TVE_EXPAND);
     faff->lastat[level] = newitem;
-    for (i = level+1; i < 4; i++) faff->lastat[i] = NULL;
+    for (i = level + 1; i < 4; i++)
+       faff->lastat[i] = NULL;
     return newitem;
 }
 
 /*
  * Create the panelfuls of controls in the configuration box.
  */
-static void create_controls(HWND hwnd, int dlgtype, int panel) {
-    if (panel == sessionpanelstart) {
-       /* The Session panel. Accelerators used: [acgo] nprtih elsd w */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Basic options for your PuTTY session",
-                 IDC_TITLE_SESSION);
-        if (dlgtype == 0) {
-            beginbox(&cp, "Specify your connection by host name",
-                     IDC_BOX_SESSION1);
-            multiedit(&cp,
-                      "Host &Name", IDC_HOSTSTATIC, IDC_HOST, 75,
-                      "&Port", IDC_PORTSTATIC, IDC_PORT, 25, NULL);
-            if (backends[3].backend == NULL) {
-                /* this is PuTTYtel, so only three protocols available */
-                radioline(&cp, "Protocol:", IDC_PROTSTATIC, 4,
-                          "&Raw", IDC_PROTRAW,
-                          "&Telnet", IDC_PROTTELNET,
-                          "Rlog&in", IDC_PROTRLOGIN, NULL);
-            } else {
-                radioline(&cp, "Protocol:", IDC_PROTSTATIC, 4,
-                          "&Raw", IDC_PROTRAW,
-                          "&Telnet", IDC_PROTTELNET,
-                          "Rlog&in", IDC_PROTRLOGIN,
-#ifdef FWHACK
-                          "SS&H/hack",
-#else
-                          "SS&H",
-#endif
-                          IDC_PROTSSH, NULL);
-            }
-            endbox(&cp);
-            beginbox(&cp, "Load, save or delete a stored session",
-                     IDC_BOX_SESSION2);
-            sesssaver(&cp, "Sav&ed Sessions",
-                      IDC_SESSSTATIC, IDC_SESSEDIT, IDC_SESSLIST,
-                      "&Load", IDC_SESSLOAD,
-                      "&Save", IDC_SESSSAVE,
-                      "&Delete", IDC_SESSDEL, NULL);
-            endbox(&cp);
-        }
-        beginbox(&cp, NULL, IDC_BOX_SESSION3);
-        radioline(&cp, "Close &window on exit:", IDC_CLOSEEXIT, 4,
-                  "Always", IDC_COEALWAYS,
-                  "Never", IDC_COENEVER,
-                  "Only on clean exit", IDC_COENORMAL, NULL);
-        endbox(&cp);
-    }
-
-    if (panel == loggingpanelstart) {
-        /* The Logging panel. Accelerators used: [acgo] tplfw */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling session logging",
-                 IDC_TITLE_TERMINAL);
-        beginbox(&cp, NULL, IDC_BOX_LOGGING1);
-        radiobig(&cp,
-                 "Session logging:", IDC_LSTATSTATIC,
-                 "Logging &turned off completely", IDC_LSTATOFF,
-                 "Log &printable output only", IDC_LSTATASCII,
-                 "&Log all session output", IDC_LSTATRAW, NULL);
-        editbutton(&cp, "Log &file name:",
-                   IDC_LGFSTATIC, IDC_LGFEDIT, "Bro&wse...",
-                   IDC_LGFBUTTON);
-        endbox(&cp);
-    }
-
-    if (panel == terminalpanelstart) {
-        /* The Terminal panel. Accelerators used: [acgo] wdlben ht */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling the terminal emulation",
-                 IDC_TITLE_TERMINAL);
-        beginbox(&cp, "Set various terminal options",
-                 IDC_BOX_TERMINAL1);
-        checkbox(&cp, "Auto &wrap mode initially on", IDC_WRAPMODE);
-        checkbox(&cp, "&DEC Origin Mode initially on", IDC_DECOM);
-        checkbox(&cp, "Implicit CR in every &LF", IDC_LFHASCR);
-        checkbox(&cp, "&Beep enabled", IDC_BEEP);
-        checkbox(&cp, "Use background colour to &erase screen", IDC_BCE);
-        checkbox(&cp, "Enable bli&nking text", IDC_BLINKTEXT);
-        endbox(&cp);
-
-        beginbox(&cp, "Line discipline options",
-                 IDC_BOX_TERMINAL2);
-        radioline(&cp, "Local ec&ho:", IDC_ECHOSTATIC, 3,
-                  "Auto", IDC_ECHOBACKEND,
-                  "Force on", IDC_ECHOYES,
-                  "Force off", IDC_ECHONO, NULL);
-        radioline(&cp, "Local line edi&ting:", IDC_EDITSTATIC, 3,
-                  "Auto", IDC_EDITBACKEND,
-                  "Force on", IDC_EDITYES,
-                  "Force off", IDC_EDITNO, NULL);
-        endbox(&cp);
-    }
-
-    if (panel == keyboardpanelstart) {
-        /* The Keyboard panel. Accelerators used: [acgo] h?sr~lxv unpymie t */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling the effects of keys",
-                 IDC_TITLE_KEYBOARD);
-        beginbox(&cp, "Change the sequences sent by:",
-                 IDC_BOX_KEYBOARD1);
-        radioline(&cp, "The Backspace key", IDC_DELSTATIC, 2,
-                  "Control-&H", IDC_DEL008,
-                  "Control-&? (127)", IDC_DEL127, NULL);
-        radioline(&cp, "The Home and End keys", IDC_HOMESTATIC, 2,
-                  "&Standard", IDC_HOMETILDE,
-                  "&rxvt", IDC_HOMERXVT, NULL);
-        radioline(&cp, "The Function keys and keypad", IDC_FUNCSTATIC, 4,
-                  "ESC[n&~", IDC_FUNCTILDE,
-                  "&Linux", IDC_FUNCLINUX,
-                  "&Xterm R6", IDC_FUNCXTERM,
-                  "&VT400", IDC_FUNCVT400, NULL);
-        endbox(&cp);
-        beginbox(&cp, "Application keypad settings:",
-                 IDC_BOX_KEYBOARD2);
-        checkbox(&cp,
-                 "Application c&ursor keys totally disabled",
-                 IDC_NOAPPLICC);
-        radioline(&cp, "Initial state of cursor keys:", IDC_CURSTATIC, 2,
-                  "&Normal", IDC_CURNORMAL,
-                  "A&pplication", IDC_CURAPPLIC, NULL);
-        checkbox(&cp,
-                 "Application ke&ypad keys totally disabled",
-                 IDC_NOAPPLICK);
-        radioline(&cp, "Initial state of numeric keypad:", IDC_KPSTATIC, 3,
-                  "Nor&mal", IDC_KPNORMAL,
-                  "Appl&ication", IDC_KPAPPLIC,
-                  "N&etHack", IDC_KPNH, NULL);
-        endbox(&cp);
-        beginbox(&cp, "Enable extra keyboard features:",
-                 IDC_BOX_KEYBOARD3);
-        checkbox(&cp, "Application and AltGr ac&t as Compose key",
-                 IDC_COMPOSEKEY);
-        endbox(&cp);
-    }
-
-    if (panel == windowpanelstart) {
-        /* The Window panel. Accelerators used: [acgo] rmz sdkp w4ylt */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling PuTTY's window",
-                 IDC_TITLE_WINDOW);
-        beginbox(&cp, "Set the size of the window",
-                 IDC_BOX_WINDOW1);
-        multiedit(&cp,
-                  "&Rows", IDC_ROWSSTATIC, IDC_ROWSEDIT, 50,
-                  "Colu&mns", IDC_COLSSTATIC, IDC_COLSEDIT, 50,
-                  NULL);
-        checkbox(&cp, "Lock window size against resi&zing", IDC_LOCKSIZE);
-        endbox(&cp);
-        beginbox(&cp, "Control the scrollback in the window",
-                 IDC_BOX_WINDOW2);
-        staticedit(&cp, "Lines of &scrollback",
-                   IDC_SAVESTATIC, IDC_SAVEEDIT, 50);
-        checkbox(&cp, "&Display scrollbar", IDC_SCROLLBAR);
-        checkbox(&cp, "Reset scrollback on &keypress", IDC_SCROLLKEY);
-        checkbox(&cp, "Reset scrollback on dis&play activity",
-                 IDC_SCROLLDISP);
-        endbox(&cp);
-        beginbox(&cp, NULL, IDC_BOX_WINDOW3);
-        checkbox(&cp, "&Warn before closing window", IDC_CLOSEWARN);
-        checkbox(&cp, "Window closes on ALT-F&4", IDC_ALTF4);
-        checkbox(&cp, "S&ystem menu appears on ALT-Space", IDC_ALTSPACE);
-        checkbox(&cp, "System menu appears on A&LT alone", IDC_ALTONLY);
-        checkbox(&cp, "Ensure window is always on &top", IDC_ALWAYSONTOP);
-        endbox(&cp);
-    }
-
-    if (panel == appearancepanelstart) {
-        /* The Appearance panel. Accelerators used: [acgo] luvb h ti p */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling PuTTY's appearance",
-                 IDC_TITLE_APPEARANCE);
-        beginbox(&cp, "Adjust the use of the cursor",
-                 IDC_BOX_APPEARANCE1);
-        radioline(&cp, "Cursor appearance:", IDC_CURSORSTATIC, 3,
-                  "B&lock", IDC_CURBLOCK,
-                  "&Underline", IDC_CURUNDER,
-                  "&Vertical line", IDC_CURVERT,
-                  NULL);
-        checkbox(&cp, "Cursor &blinks", IDC_BLINKCUR);
-        endbox(&cp);
-        beginbox(&cp, "Set the font used in the terminal window",
-                 IDC_BOX_APPEARANCE2);
-        staticbtn(&cp, "", IDC_FONTSTATIC, "C&hange...", IDC_CHOOSEFONT);
-        endbox(&cp);
-        beginbox(&cp, "Adjust the use of the window title",
-                 IDC_BOX_APPEARANCE3);
-        multiedit(&cp,
-                  "Window &title:", IDC_WINTITLE,
-                  IDC_WINEDIT, 100, NULL);
-        checkbox(&cp, "Avoid ever using &icon title", IDC_WINNAME);
-        endbox(&cp);
-        beginbox(&cp, "Adjust the use of the mouse pointer",
-                 IDC_BOX_APPEARANCE4);
-        checkbox(&cp, "Hide mouse &pointer when typing in window",
-                 IDC_HIDEMOUSE);
-        endbox(&cp);
-    }
-
-    if (panel == translationpanelstart) {
-        /* The Translation panel. Accelerators used: [acgo] xbep t s */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling character set translation",
-                 IDC_TITLE_TRANSLATION);
-        beginbox(&cp, "Adjust how PuTTY displays line drawing characters",
-                 IDC_BOX_TRANSLATION1);
-        radiobig(&cp,
-                 "Handling of line drawing characters:", IDC_VTSTATIC,
-                 "Font has &XWindows encoding", IDC_VTXWINDOWS,
-                 "Use font in &both ANSI and OEM modes", IDC_VTOEMANSI,
-                 "Use font in O&EM mode only", IDC_VTOEMONLY,
-                 "&Poor man's line drawing (""+"", ""-"" and ""|"")",
-                 IDC_VTPOORMAN, NULL);
-        endbox(&cp);
-        beginbox(&cp, "Enable character set translation on received data",
-                 IDC_BOX_TRANSLATION2);
-        radiobig(&cp,
-                 "Character set &translation:", IDC_XLATSTATIC,
-                 "None", IDC_NOXLAT,
-                 "KOI8 / Win-1251", IDC_KOI8WIN1251,
-                 "ISO-8859-2 / Win-1250", IDC_88592WIN1250,
-                 "ISO-8859-2 / CP852", IDC_88592CP852, NULL);
-        endbox(&cp);
-        beginbox(&cp, "Enable character set translation on input data",
-                 IDC_BOX_TRANSLATION3);
-        checkbox(&cp, "CAP&S LOCK acts as cyrillic switch",
-                 IDC_CAPSLOCKCYR);
-        endbox(&cp);
-    }
-
-    if (panel == selectionpanelstart) {
-        /* The Selection panel. Accelerators used: [acgo] d wx hst */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling copy and paste",
-                 IDC_TITLE_SELECTION);
-        beginbox(&cp, "Translation of pasted characters",
-                 IDC_BOX_SELECTION1);
-        checkbox(&cp, "&Don't translate line drawing chars into +, - and |",
-                 IDC_RAWCNP);
-        endbox(&cp);
-        beginbox(&cp, "Control which mouse button does which thing",
-                 IDC_BOX_SELECTION2);
-        radiobig(&cp, "Action of mouse buttons:", IDC_MBSTATIC,
-                 "&Windows (Right pastes, Middle extends)", IDC_MBWINDOWS,
-                 "&xterm (Right extends, Middle pastes)", IDC_MBXTERM,
-                 NULL);
-        endbox(&cp);
-        beginbox(&cp, "Control the select-one-word-at-a-time mode",
-                 IDC_BOX_SELECTION3);
-        charclass(&cp, "C&haracter classes:", IDC_CCSTATIC, IDC_CCLIST,
-                  "&Set", IDC_CCSET, IDC_CCEDIT,
-                  "&to class", IDC_CCSTATIC2);
-        endbox(&cp);
-    }
-
-    if (panel == colourspanelstart) {
-        /* The Colours panel. Accelerators used: [acgo] blum */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling use of colours",
-                 IDC_TITLE_COLOURS);
-        beginbox(&cp, "General options for colour usage",
-                 IDC_BOX_COLOURS1);
-        checkbox(&cp, "&Bolded text is a different colour", IDC_BOLDCOLOUR);
-        checkbox(&cp, "Attempt to use &logical palettes", IDC_PALETTE);
-        endbox(&cp);
-        beginbox(&cp, "Adjust the precise colours PuTTY displays",
-                 IDC_BOX_COLOURS2);
-        colouredit(&cp, "Select a colo&ur and then click to modify it:",
-                   IDC_COLOURSTATIC, IDC_COLOURLIST,
-                   "&Modify...", IDC_CHANGE,
-                   "Red:", IDC_RSTATIC, IDC_RVALUE,
-                   "Green:", IDC_GSTATIC, IDC_GVALUE,
-                   "Blue:", IDC_BSTATIC, IDC_BVALUE, NULL);
-        endbox(&cp);
-    }
-
-    if (panel == connectionpanelstart) {
-        /* The Connection panel. Accelerators used: [acgo] tuk */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        bartitle(&cp, "Options controlling the connection", IDC_TITLE_CONNECTION);
-        if (dlgtype == 0) {
-            beginbox(&cp, "Data to send to the server",
-                     IDC_BOX_CONNECTION1);
-            staticedit(&cp, "Terminal-&type string", IDC_TTSTATIC, IDC_TTEDIT, 50);
-            staticedit(&cp, "Auto-login &username", IDC_LOGSTATIC, IDC_LOGEDIT, 50);
-            endbox(&cp);
-        }
-        beginbox(&cp, "Sending of null packets to keep session active",
-                 IDC_BOX_CONNECTION2);
-        staticedit(&cp, "Seconds between &keepalives (0 to turn off)",
-                   IDC_PINGSTATIC, IDC_PINGEDIT, 20);
-        endbox(&cp);
-    }
-
-    if (panel == telnetpanelstart) {
-        /* The Telnet panel. Accelerators used: [acgo] svldr bf */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        if (dlgtype == 0) {
-            bartitle(&cp, "Options controlling Telnet connections", IDC_TITLE_TELNET);
-            beginbox(&cp, "Data to send to the server",
-                     IDC_BOX_TELNET1);
-            staticedit(&cp, "Terminal-&speed string", IDC_TSSTATIC, IDC_TSEDIT, 50);
-            envsetter(&cp, "Environment variables:", IDC_ENVSTATIC,
-                      "&Variable", IDC_VARSTATIC, IDC_VAREDIT,
-                      "Va&lue", IDC_VALSTATIC, IDC_VALEDIT,
-                      IDC_ENVLIST,
-                      "A&dd", IDC_ENVADD, "&Remove", IDC_ENVREMOVE);
-            endbox(&cp);
-            beginbox(&cp, "Telnet protocol adjustments",
-                     IDC_BOX_TELNET2);
-            radioline(&cp, "Handling of OLD_ENVIRON ambiguity:", IDC_EMSTATIC, 2,
-                      "&BSD (commonplace)", IDC_EMBSD,
-                      "R&FC 1408 (unusual)", IDC_EMRFC, NULL);
-            endbox(&cp);
-        }
-    }
-
-    if (panel == rloginpanelstart) {
-        /* The Rlogin panel. Accelerators used: [acgo] sl */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        if (dlgtype == 0) {
-            bartitle(&cp, "Options controlling Rlogin connections", IDC_TITLE_RLOGIN);
-            beginbox(&cp, "Data to send to the server",
-                     IDC_BOX_RLOGIN1);
-            staticedit(&cp, "Terminal-&speed string", IDC_R_TSSTATIC, IDC_R_TSEDIT, 50);
-            staticedit(&cp, "&Local username:", IDC_RLLUSERSTATIC, IDC_RLLUSEREDIT, 50);
-            endbox(&cp);
-        }
-    }
+static void create_controls(HWND hwnd, char *path)
+{
+    struct ctlpos cp;
+    int index;
+    int base_id;
+    struct winctrls *wc;
 
-    if (panel == sshpanelstart) {
-        /* The SSH panel. Accelerators used: [acgo] rmfkw pe123bds i */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        if (dlgtype == 0) {
-            bartitle(&cp, "Options controlling SSH connections", IDC_TITLE_SSH);
-            beginbox(&cp, "Data to send to the server",
-                     IDC_BOX_SSH1);
-            multiedit(&cp,
-                      "&Remote command:", IDC_CMDSTATIC, IDC_CMDEDIT, 100,
-                      NULL);
-            endbox(&cp);
-            beginbox(&cp, "Authentication options",
-                     IDC_BOX_SSH2);
-            checkbox(&cp, "Atte&mpt TIS or CryptoCard authentication",
-                     IDC_AUTHTIS);
-            checkbox(&cp, "Allow agent &forwarding", IDC_AGENTFWD);
-            editbutton(&cp, "Private &key file for authentication:",
-                       IDC_PKSTATIC, IDC_PKEDIT, "Bro&wse...", IDC_PKBUTTON);
-            endbox(&cp);
-            beginbox(&cp, "Protocol options",
-                     IDC_BOX_SSH3);
-            checkbox(&cp, "Don't allocate a &pseudo-terminal", IDC_NOPTY);
-            checkbox(&cp, "Enable compr&ession", IDC_COMPRESS);
-            radioline(&cp, "Preferred SSH protocol version:",
-                      IDC_SSHPROTSTATIC, 2,
-                      "&1", IDC_SSHPROT1, "&2", IDC_SSHPROT2, NULL);
-            radioline(&cp, "Preferred encryption algorithm:", IDC_CIPHERSTATIC, 4,
-                      "&3DES", IDC_CIPHER3DES,
-                      "&Blowfish", IDC_CIPHERBLOWF,
-                      "&DES", IDC_CIPHERDES,
-                      "AE&S", IDC_CIPHERAES,
-                      NULL);
-            checkbox(&cp, "&Imitate SSH 2 MAC bug in commercial <= v2.3.x",
-                     IDC_BUGGYMAC);
-            endbox(&cp);
-        }
+    if (!path[0]) {
+       /*
+        * Here we must create the basic standard controls.
+        */
+       ctlposinit(&cp, hwnd, 3, 3, 235);
+       wc = &ctrls_base;
+       base_id = IDCX_STDBASE;
+    } else {
+       /*
+        * Otherwise, we're creating the controls for a particular
+        * panel.
+        */
+       ctlposinit(&cp, hwnd, 80, 3, 13);
+       wc = &ctrls_panel;
+       base_id = IDCX_PANELBASE;
     }
 
-    if (panel == tunnelspanelstart) {
-        /* The Tunnels panel. Accelerators used: [acgo] ex */
-        struct ctlpos cp;
-        ctlposinit(&cp, hwnd, 80, 3, 13);
-        if (dlgtype == 0) {
-            bartitle(&cp, "Options controlling SSH tunnelling",
-                     IDC_TITLE_TUNNELS);
-            beginbox(&cp, "X11 forwarding options",
-                     IDC_BOX_TUNNELS);
-            checkbox(&cp, "&Enable X11 forwarding",
-                     IDC_X11_FORWARD);
-            multiedit(&cp, "&X display location", IDC_X11_DISPSTATIC,
-                      IDC_X11_DISPLAY, 50, NULL);
-            endbox(&cp);
-        }
+    for (index=-1; (index = ctrl_find_path(ctrlbox, path, index)) >= 0 ;) {
+       struct controlset *s = ctrlbox->ctrlsets[index];
+       winctrl_layout(&dp, wc, &cp, s, &base_id);
     }
 }
 
 /*
  * This function is the configuration box.
  */
-static int GenericMainDlgProc (HWND hwnd, UINT msg,
-                              WPARAM wParam, LPARAM lParam,
-                              int dlgtype) {
+static int CALLBACK GenericMainDlgProc(HWND hwnd, UINT msg,
+                                      WPARAM wParam, LPARAM lParam)
+{
     HWND hw, treeview;
     struct treeview_faff tvfaff;
-    HTREEITEM hsession;
-    OPENFILENAME of;
-    char filename[sizeof(cfg.keyfile)];
-    CHOOSEFONT cf;
-    LOGFONT lf;
-    char fontstatic[256];
-    char portname[32];
-    struct servent * service;
-    int i;
+    int ret;
 
     switch (msg) {
       case WM_INITDIALOG:
-       readytogo = 0;
+       dp.hwnd = hwnd;
+       create_controls(hwnd, "");     /* Open and Cancel buttons etc */
        SetWindowLong(hwnd, GWL_USERDATA, 0);
+        if (help_path)
+            SetWindowLong(hwnd, GWL_EXSTYLE,
+                          GetWindowLong(hwnd, GWL_EXSTYLE) | WS_EX_CONTEXTHELP);
+        else {
+            HWND item = GetDlgItem(hwnd, IDC_HELPBTN);
+            if (item)
+                DestroyWindow(item);
+        }
+        requested_help = FALSE;
+       SendMessage(hwnd, WM_SETICON, (WPARAM) ICON_BIG,
+                   (LPARAM) LoadIcon(hinst, MAKEINTRESOURCE(IDI_CFGICON)));
        /*
         * Centre the window.
         */
@@ -1106,1077 +327,469 @@ static int GenericMainDlgProc (HWND hwnd, UINT msg,
            RECT rs, rd;
 
            hw = GetDesktopWindow();
-           if (GetWindowRect (hw, &rs) && GetWindowRect (hwnd, &rd))
-               MoveWindow (hwnd, (rs.right + rs.left + rd.left - rd.right)/2,
-                           (rs.bottom + rs.top + rd.top - rd.bottom)/2,
-                           rd.right-rd.left, rd.bottom-rd.top, TRUE);
+           if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd))
+               MoveWindow(hwnd,
+                          (rs.right + rs.left + rd.left - rd.right) / 2,
+                          (rs.bottom + rs.top + rd.top - rd.bottom) / 2,
+                          rd.right - rd.left, rd.bottom - rd.top, TRUE);
        }
 
        /*
         * Create the tree view.
         */
-        {
-            RECT r;
+       {
+           RECT r;
            WPARAM font;
-            HWND tvstatic;
-
-            r.left = 3; r.right = r.left + 75;
-            r.top = 3; r.bottom = r.top + 10;
-            MapDialogRect(hwnd, &r);
-            tvstatic = CreateWindowEx(0, "STATIC", "Cate&gory:",
-                                      WS_CHILD | WS_VISIBLE,
-                                      r.left, r.top,
-                                      r.right-r.left, r.bottom-r.top,
-                                      hwnd, (HMENU)IDCX_TVSTATIC, hinst, NULL);
+           HWND tvstatic;
+
+           r.left = 3;
+           r.right = r.left + 75;
+           r.top = 3;
+           r.bottom = r.top + 10;
+           MapDialogRect(hwnd, &r);
+           tvstatic = CreateWindowEx(0, "STATIC", "Cate&gory:",
+                                     WS_CHILD | WS_VISIBLE,
+                                     r.left, r.top,
+                                     r.right - r.left, r.bottom - r.top,
+                                     hwnd, (HMENU) IDCX_TVSTATIC, hinst,
+                                     NULL);
            font = SendMessage(hwnd, WM_GETFONT, 0, 0);
            SendMessage(tvstatic, WM_SETFONT, font, MAKELPARAM(TRUE, 0));
 
-            r.left = 3; r.right = r.left + 75;
-            r.top = 13; r.bottom = r.top + 206;
-            MapDialogRect(hwnd, &r);
-            treeview = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, "",
-                                      WS_CHILD | WS_VISIBLE |
-                                      WS_TABSTOP | TVS_HASLINES |
-                                      TVS_DISABLEDRAGDROP | TVS_HASBUTTONS |
-                                      TVS_LINESATROOT | TVS_SHOWSELALWAYS,
-                                      r.left, r.top,
-                                      r.right-r.left, r.bottom-r.top,
-                                      hwnd, (HMENU)IDCX_TREEVIEW, hinst, NULL);
+           r.left = 3;
+           r.right = r.left + 75;
+           r.top = 13;
+           r.bottom = r.top + 219;
+           MapDialogRect(hwnd, &r);
+           treeview = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, "",
+                                     WS_CHILD | WS_VISIBLE |
+                                     WS_TABSTOP | TVS_HASLINES |
+                                     TVS_DISABLEDRAGDROP | TVS_HASBUTTONS
+                                     | TVS_LINESATROOT |
+                                     TVS_SHOWSELALWAYS, r.left, r.top,
+                                     r.right - r.left, r.bottom - r.top,
+                                     hwnd, (HMENU) IDCX_TREEVIEW, hinst,
+                                     NULL);
            font = SendMessage(hwnd, WM_GETFONT, 0, 0);
            SendMessage(treeview, WM_SETFONT, font, MAKELPARAM(TRUE, 0));
-            tvfaff.treeview = treeview;
-            memset(tvfaff.lastat, 0, sizeof(tvfaff.lastat));
-        }
+           tvfaff.treeview = treeview;
+           memset(tvfaff.lastat, 0, sizeof(tvfaff.lastat));
+       }
 
        /*
         * Set up the tree view contents.
         */
-        hsession = treeview_insert(&tvfaff, 0, "Session");
-        treeview_insert(&tvfaff, 1, "Logging");
-        treeview_insert(&tvfaff, 0, "Terminal");
-        treeview_insert(&tvfaff, 1, "Keyboard");
-        treeview_insert(&tvfaff, 0, "Window");
-        treeview_insert(&tvfaff, 1, "Appearance");
-        treeview_insert(&tvfaff, 1, "Translation");
-        treeview_insert(&tvfaff, 1, "Selection");
-        treeview_insert(&tvfaff, 1, "Colours");
-        treeview_insert(&tvfaff, 0, "Connection");
-        if (dlgtype == 0) {
-            treeview_insert(&tvfaff, 1, "Telnet");
-            treeview_insert(&tvfaff, 1, "Rlogin");
-            if (backends[3].backend != NULL) {
-                treeview_insert(&tvfaff, 1, "SSH");
-                treeview_insert(&tvfaff, 2, "Tunnels");
-            }
-        }
+       {
+           HTREEITEM hfirst = NULL;
+           int i;
+           char *path = NULL;
+
+           for (i = 0; i < ctrlbox->nctrlsets; i++) {
+               struct controlset *s = ctrlbox->ctrlsets[i];
+               HTREEITEM item;
+               int j;
+               char *c;
+
+               if (!s->pathname[0])
+                   continue;
+               j = path ? ctrl_path_compare(s->pathname, path) : 0;
+               if (j == INT_MAX)
+                   continue;          /* same path, nothing to add to tree */
 
-        /*
-         * Put the treeview selection on to the Session panel. This
-         * should also cause creation of the relevant controls.
-         */
-        TreeView_SelectItem(treeview, hsession);
-
-        /*
-         * Set focus into the first available control.
-         */
-        {
-            HWND ctl;
-            ctl = GetDlgItem(hwnd, IDC_HOST);
-            if (!ctl) ctl = GetDlgItem(hwnd, IDC_CLOSEEXIT);
-            SetFocus(ctl);
-        }
+               /*
+                * We expect never to find an implicit path
+                * component. For example, we expect never to see
+                * A/B/C followed by A/D/E, because that would
+                * _implicitly_ create A/D. All our path prefixes
+                * are expected to contain actual controls and be
+                * selectable in the treeview; so we would expect
+                * to see A/D _explicitly_ before encountering
+                * A/D/E.
+                */
+               assert(j == ctrl_path_elements(s->pathname) - 1);
+
+               c = strrchr(s->pathname, '/');
+               if (!c)
+                       c = s->pathname;
+               else
+                       c++;
+
+               item = treeview_insert(&tvfaff, j, c, s->pathname);
+               if (!hfirst)
+                   hfirst = item;
+
+               path = s->pathname;
+           }
+
+           /*
+            * Put the treeview selection on to the Session panel.
+            * This should also cause creation of the relevant
+            * controls.
+            */
+           TreeView_SelectItem(treeview, hfirst);
+       }
+
+       /*
+        * Set focus into the first available control.
+        */
+       {
+           int i;
+           struct winctrl *c;
+
+           for (i = 0; (c = winctrl_findbyindex(&ctrls_panel, i)) != NULL;
+                i++) {
+               if (c->ctrl) {
+                   dlg_set_focus(c->ctrl, &dp);
+                   break;
+               }
+           }
+       }
 
        SetWindowLong(hwnd, GWL_USERDATA, 1);
        return 0;
       case WM_LBUTTONUP:
-        /*
-         * Button release should trigger WM_OK if there was a
-         * previous double click on the session list.
-         */
-        ReleaseCapture();
-        if (readytogo)
-            SendMessage (hwnd, WM_COMMAND, IDOK, 0);
-        break;
+       /*
+        * Button release should trigger WM_OK if there was a
+        * previous double click on the session list.
+        */
+       ReleaseCapture();
+       if (dp.ended)
+           EndDialog(hwnd, dp.endresult ? 1 : 0);
+       break;
       case WM_NOTIFY:
        if (LOWORD(wParam) == IDCX_TREEVIEW &&
-           ((LPNMHDR)lParam)->code == TVN_SELCHANGED) {
-           HTREEITEM i = TreeView_GetSelection(((LPNMHDR)lParam)->hwndFrom);
+           ((LPNMHDR) lParam)->code == TVN_SELCHANGED) {
+           HTREEITEM i =
+               TreeView_GetSelection(((LPNMHDR) lParam)->hwndFrom);
            TVITEM item;
-            int j;
            char buffer[64];
-            item.hItem = i;
+           SendMessage (hwnd, WM_SETREDRAW, FALSE, 0);
+           item.hItem = i;
            item.pszText = buffer;
            item.cchTextMax = sizeof(buffer);
-           item.mask = TVIF_TEXT;
-           TreeView_GetItem(((LPNMHDR)lParam)->hwndFrom, &item);
-           for (j = controlstartvalue; j < controlendvalue; j++) {
-                HWND item = GetDlgItem(hwnd, j);
-                if (item)
-                    DestroyWindow(item);
-            }
-           if (!strcmp(buffer, "Session"))
-               create_controls(hwnd, dlgtype, sessionpanelstart);
-           if (!strcmp(buffer, "Logging"))
-               create_controls(hwnd, dlgtype, loggingpanelstart);
-           if (!strcmp(buffer, "Keyboard"))
-               create_controls(hwnd, dlgtype, keyboardpanelstart);
-           if (!strcmp(buffer, "Terminal"))
-               create_controls(hwnd, dlgtype, terminalpanelstart);
-           if (!strcmp(buffer, "Window"))
-               create_controls(hwnd, dlgtype, windowpanelstart);
-           if (!strcmp(buffer, "Appearance"))
-               create_controls(hwnd, dlgtype, appearancepanelstart);
-           if (!strcmp(buffer, "Tunnels"))
-               create_controls(hwnd, dlgtype, tunnelspanelstart);
-           if (!strcmp(buffer, "Connection"))
-               create_controls(hwnd, dlgtype, connectionpanelstart);
-           if (!strcmp(buffer, "Telnet"))
-               create_controls(hwnd, dlgtype, telnetpanelstart);
-           if (!strcmp(buffer, "Rlogin"))
-               create_controls(hwnd, dlgtype, rloginpanelstart);
-           if (!strcmp(buffer, "SSH"))
-               create_controls(hwnd, dlgtype, sshpanelstart);
-           if (!strcmp(buffer, "Selection"))
-               create_controls(hwnd, dlgtype, selectionpanelstart);
-           if (!strcmp(buffer, "Colours"))
-               create_controls(hwnd, dlgtype, colourspanelstart);
-           if (!strcmp(buffer, "Translation"))
-               create_controls(hwnd, dlgtype, translationpanelstart);
-
-            init_dlg_ctrls(hwnd);
-
-           SetFocus (((LPNMHDR)lParam)->hwndFrom);   /* ensure focus stays */
+           item.mask = TVIF_TEXT | TVIF_PARAM;
+           TreeView_GetItem(((LPNMHDR) lParam)->hwndFrom, &item);
+           {
+               /* Destroy all controls in the currently visible panel. */
+               int k;
+               HWND item;
+               struct winctrl *c;
+
+               while ((c = winctrl_findbyindex(&ctrls_panel, 0)) != NULL) {
+                   for (k = 0; k < c->num_ids; k++) {
+                       item = GetDlgItem(hwnd, c->base_id + k);
+                       if (item)
+                           DestroyWindow(item);
+                   }
+                   winctrl_rem_shortcuts(&dp, c);
+                   winctrl_remove(&ctrls_panel, c);
+                   sfree(c->data);
+                   sfree(c);
+               }
+           }
+           create_controls(hwnd, (char *)item.lParam);
+
+           dlg_refresh(NULL, &dp);    /* set up control values */
+           SendMessage (hwnd, WM_SETREDRAW, TRUE, 0);
+           InvalidateRect (hwnd, NULL, TRUE);
+
+           SetFocus(((LPNMHDR) lParam)->hwndFrom);     /* ensure focus stays */
            return 0;
        }
        break;
       case WM_COMMAND:
+      case WM_DRAWITEM:
+      default:                        /* also handle drag list msg here */
        /*
         * Only process WM_COMMAND once the dialog is fully formed.
         */
-       if (GetWindowLong(hwnd, GWL_USERDATA) == 1) switch (LOWORD(wParam)) {
-         case IDOK:
-           if (*cfg.host)
-               EndDialog (hwnd, 1);
+       if (GetWindowLong(hwnd, GWL_USERDATA) == 1) {
+           ret = winctrl_handle_command(&dp, msg, wParam, lParam);
+           if (dp.ended && GetCapture() != hwnd)
+               EndDialog(hwnd, dp.endresult ? 1 : 0);
+       } else
+           ret = 0;
+       return ret;
+      case WM_HELP:
+        if (help_path) {
+           if (winctrl_context_help(&dp, hwnd,
+                                    ((LPHELPINFO)lParam)->iCtrlId))
+                requested_help = TRUE;
            else
-               MessageBeep (0);
-           return 0;
-         case IDCANCEL:
-           EndDialog (hwnd, 0);
-           return 0;
-         case IDC_PROTTELNET:
-         case IDC_PROTRLOGIN:
-         case IDC_PROTSSH:
-         case IDC_PROTRAW:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               int i = IsDlgButtonChecked (hwnd, IDC_PROTSSH);
-               int j = IsDlgButtonChecked (hwnd, IDC_PROTTELNET);
-               int k = IsDlgButtonChecked (hwnd, IDC_PROTRLOGIN);
-               cfg.protocol = i ? PROT_SSH : j ? PROT_TELNET : k ? PROT_RLOGIN : PROT_RAW ;
-               if ((cfg.protocol == PROT_SSH && cfg.port != 22) ||
-                   (cfg.protocol == PROT_TELNET && cfg.port != 23) ||
-                   (cfg.protocol == PROT_RLOGIN && cfg.port != 513)) {
-                   cfg.port = i ? 22 : j ? 23 : 513;
-                   SetDlgItemInt (hwnd, IDC_PORT, cfg.port, FALSE);
-               }
-           }
-           break;
-         case IDC_HOST:
-           if (HIWORD(wParam) == EN_CHANGE)
-               GetDlgItemText (hwnd, IDC_HOST, cfg.host,
-                               sizeof(cfg.host)-1);
-           break;
-         case IDC_PORT:
-           if (HIWORD(wParam) == EN_CHANGE) {
-               GetDlgItemText (hwnd, IDC_PORT, portname, 31);
-               if (isdigit(portname[0]))
-                   MyGetDlgItemInt (hwnd, IDC_PORT, &cfg.port);
-               else {
-                   service = getservbyname(portname, NULL);
-                   if (service) cfg.port = ntohs(service->s_port);
-                   else cfg.port = 0;
-               }
-           }
-           break;
-         case IDC_SESSEDIT:
-           if (HIWORD(wParam) == EN_CHANGE) {
-               SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_SETCURSEL,
-                                   (WPARAM) -1, 0);
-                GetDlgItemText (hwnd, IDC_SESSEDIT,
-                                savedsession, sizeof(savedsession)-1);
-                savedsession[sizeof(savedsession)-1] = '\0';
-            }
-           break;
-         case IDC_SESSSAVE:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               /*
-                * Save a session
-                */
-               char str[2048];
-               GetDlgItemText (hwnd, IDC_SESSEDIT, str, sizeof(str)-1);
-               if (!*str) {
-                   int n = SendDlgItemMessage (hwnd, IDC_SESSLIST,
-                                               LB_GETCURSEL, 0, 0);
-                   if (n == LB_ERR) {
-                       MessageBeep(0);
-                       break;
-                   }
-                   strcpy (str, sessions[n]);
-               }
-               save_settings (str, !!strcmp(str, "Default Settings"), &cfg);
-               get_sesslist (FALSE);
-               get_sesslist (TRUE);
-               SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_RESETCONTENT,
-                                   0, 0);
-               for (i = 0; i < nsessions; i++)
-                   SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_ADDSTRING,
-                                       0, (LPARAM) (sessions[i]));
-               SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_SETCURSEL,
-                                   (WPARAM) -1, 0);
-           }
-           break;
-         case IDC_SESSLIST:
-         case IDC_SESSLOAD:
-           if (LOWORD(wParam) == IDC_SESSLOAD &&
-               HIWORD(wParam) != BN_CLICKED &&
-               HIWORD(wParam) != BN_DOUBLECLICKED)
-               break;
-           if (LOWORD(wParam) == IDC_SESSLIST &&
-               HIWORD(wParam) != LBN_DBLCLK)
-               break;
-           {
-               int n = SendDlgItemMessage (hwnd, IDC_SESSLIST,
-                                           LB_GETCURSEL, 0, 0);
-                int isdef;
-               if (n == LB_ERR) {
-                   MessageBeep(0);
-                   break;
-               }
-                isdef = !strcmp(sessions[n], "Default Settings");
-               load_settings (sessions[n], !isdef, &cfg);
-               init_dlg_ctrls(hwnd);
-                if (!isdef)
-                    SetDlgItemText(hwnd, IDC_SESSEDIT, sessions[n]);
-               else
-                    SetDlgItemText(hwnd, IDC_SESSEDIT, "");
-           }
-           if (LOWORD(wParam) == IDC_SESSLIST) {
-               /*
-                * A double-click on a saved session should
-                * actually start the session, not just load it.
-                * Unless it's Default Settings or some other
-                * host-less set of saved settings.
-                */
-               if (*cfg.host) {
-                    readytogo = TRUE;
-                    SetCapture(hwnd);
-                }
-           }
-           break;
-         case IDC_SESSDEL:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               int n = SendDlgItemMessage (hwnd, IDC_SESSLIST,
-                                           LB_GETCURSEL, 0, 0);
-               if (n == LB_ERR || n == 0) {
-                   MessageBeep(0);
-                   break;
-               }
-               del_settings(sessions[n]);
-               get_sesslist (FALSE);
-               get_sesslist (TRUE);
-               SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_RESETCONTENT,
-                                   0, 0);
-               for (i = 0; i < nsessions; i++)
-                   SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_ADDSTRING,
-                                       0, (LPARAM) (sessions[i]));
-               SendDlgItemMessage (hwnd, IDC_SESSLIST, LB_SETCURSEL,
-                                   (WPARAM) -1, 0);
-           }
-          case IDC_PINGEDIT:
-            if (HIWORD(wParam) == EN_CHANGE)
-                MyGetDlgItemInt (hwnd, IDC_PINGEDIT, &cfg.ping_interval);
-            break;
-         case IDC_DEL008:
-         case IDC_DEL127:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.bksp_is_delete = IsDlgButtonChecked (hwnd, IDC_DEL127);
-           break;
-         case IDC_HOMETILDE:
-         case IDC_HOMERXVT:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.rxvt_homeend = IsDlgButtonChecked (hwnd, IDC_HOMERXVT);
-           break;
-         case IDC_FUNCXTERM:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.funky_type = 2;
-           break;
-         case IDC_FUNCVT400:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.funky_type = 3;
-           break;
-         case IDC_FUNCTILDE:
-         case IDC_FUNCLINUX:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.funky_type = IsDlgButtonChecked (hwnd, IDC_FUNCLINUX);
-           break;
-         case IDC_KPNORMAL:
-         case IDC_KPAPPLIC:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               cfg.app_keypad = IsDlgButtonChecked (hwnd, IDC_KPAPPLIC);
-               cfg.nethack_keypad = FALSE;
-           }
-           break;
-         case IDC_KPNH:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               cfg.app_keypad = FALSE;
-               cfg.nethack_keypad = TRUE;
-           }
-           break;
-         case IDC_CURNORMAL:
-         case IDC_CURAPPLIC:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.app_cursor = IsDlgButtonChecked (hwnd, IDC_CURAPPLIC);
-           break;
-         case IDC_NOAPPLICC:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.no_applic_c = IsDlgButtonChecked (hwnd, IDC_NOAPPLICC);
-           break;
-         case IDC_NOAPPLICK:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.no_applic_k = IsDlgButtonChecked (hwnd, IDC_NOAPPLICK);
-           break;
-         case IDC_ALTF4:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.alt_f4 = IsDlgButtonChecked (hwnd, IDC_ALTF4);
-           break;
-         case IDC_ALTSPACE:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.alt_space = IsDlgButtonChecked (hwnd, IDC_ALTSPACE);
-           break;
-         case IDC_ALTONLY:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.alt_only = IsDlgButtonChecked (hwnd, IDC_ALTONLY);
-           break;
-         case IDC_ECHOBACKEND:
-         case IDC_ECHOYES:
-         case IDC_ECHONO:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               if (LOWORD(wParam)==IDC_ECHOBACKEND) cfg.localecho=LD_BACKEND;
-               if (LOWORD(wParam)==IDC_ECHOYES) cfg.localecho=LD_YES;
-               if (LOWORD(wParam)==IDC_ECHONO) cfg.localecho=LD_NO;
-            }
-           break;
-         case IDC_EDITBACKEND:
-         case IDC_EDITYES:
-         case IDC_EDITNO:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               if (LOWORD(wParam)==IDC_EDITBACKEND) cfg.localedit=LD_BACKEND;
-               if (LOWORD(wParam)==IDC_EDITYES) cfg.localedit=LD_YES;
-               if (LOWORD(wParam)==IDC_EDITNO) cfg.localedit=LD_NO;
-            }
-           break;
-          case IDC_ALWAYSONTOP:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-                cfg.alwaysontop = IsDlgButtonChecked (hwnd, IDC_ALWAYSONTOP);
-           break;
-         case IDC_SCROLLKEY:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.scroll_on_key = IsDlgButtonChecked (hwnd, IDC_SCROLLKEY);
-           break;
-         case IDC_SCROLLDISP:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.scroll_on_disp = IsDlgButtonChecked (hwnd, IDC_SCROLLDISP);
-           break;
-         case IDC_COMPOSEKEY:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.compose_key = IsDlgButtonChecked (hwnd, IDC_COMPOSEKEY);
-           break;
-         case IDC_WRAPMODE:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.wrap_mode = IsDlgButtonChecked (hwnd, IDC_WRAPMODE);
-           break;
-         case IDC_DECOM:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.dec_om = IsDlgButtonChecked (hwnd, IDC_DECOM);
-           break;
-         case IDC_LFHASCR:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.lfhascr = IsDlgButtonChecked (hwnd, IDC_LFHASCR);
-           break;
-         case IDC_ROWSEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               MyGetDlgItemInt (hwnd, IDC_ROWSEDIT, &cfg.height);
-           break;
-         case IDC_COLSEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               MyGetDlgItemInt (hwnd, IDC_COLSEDIT, &cfg.width);
-           break;
-         case IDC_SAVEEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               MyGetDlgItemInt (hwnd, IDC_SAVEEDIT, &cfg.savelines);
-           break;
-         case IDC_CHOOSEFONT:
-           lf.lfHeight = cfg.fontheight;
-           lf.lfWidth = lf.lfEscapement = lf.lfOrientation = 0;
-           lf.lfItalic = lf.lfUnderline = lf.lfStrikeOut = 0;
-           lf.lfWeight = (cfg.fontisbold ? FW_BOLD : 0);
-           lf.lfCharSet = cfg.fontcharset;
-           lf.lfOutPrecision = OUT_DEFAULT_PRECIS;
-           lf.lfClipPrecision = CLIP_DEFAULT_PRECIS;
-           lf.lfQuality = DEFAULT_QUALITY;
-           lf.lfPitchAndFamily = FIXED_PITCH | FF_DONTCARE;
-           strncpy (lf.lfFaceName, cfg.font, sizeof(lf.lfFaceName)-1);
-           lf.lfFaceName[sizeof(lf.lfFaceName)-1] = '\0';
-
-           cf.lStructSize = sizeof(cf);
-           cf.hwndOwner = hwnd;
-           cf.lpLogFont = &lf;
-           cf.Flags = CF_FIXEDPITCHONLY | CF_FORCEFONTEXIST |
-               CF_INITTOLOGFONTSTRUCT | CF_SCREENFONTS;
-
-           if (ChooseFont (&cf)) {
-               strncpy (cfg.font, lf.lfFaceName, sizeof(cfg.font)-1);
-               cfg.font[sizeof(cfg.font)-1] = '\0';
-               cfg.fontisbold = (lf.lfWeight == FW_BOLD);
-               cfg.fontcharset = lf.lfCharSet;
-               cfg.fontheight = cf.iPointSize / 10;
-               fmtfont (fontstatic);
-               SetDlgItemText (hwnd, IDC_FONTSTATIC, fontstatic);
-           }
-           break;
-         case IDC_BEEP:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.beep = IsDlgButtonChecked (hwnd, IDC_BEEP);
-           break;
-         case IDC_BLINKTEXT:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.blinktext = IsDlgButtonChecked (hwnd, IDC_BLINKTEXT);
-           break;
-         case IDC_BCE:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.bce = IsDlgButtonChecked (hwnd, IDC_BCE);
-           break;
-         case IDC_WINNAME:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.win_name_always = IsDlgButtonChecked (hwnd, IDC_WINNAME);
-           break;
-         case IDC_HIDEMOUSE:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.hide_mouseptr = IsDlgButtonChecked (hwnd, IDC_HIDEMOUSE);
-           break;
-         case IDC_CURBLOCK:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.cursor_type = 0;
-           break;
-         case IDC_CURUNDER:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.cursor_type = 1;
-           break;
-         case IDC_CURVERT:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.cursor_type = 2;
-           break;
-          case IDC_BLINKCUR:
-            if (HIWORD(wParam) == BN_CLICKED ||
-                HIWORD(wParam) == BN_DOUBLECLICKED)
-                cfg.blink_cur = IsDlgButtonChecked (hwnd, IDC_BLINKCUR);
-            break;
-          case IDC_SCROLLBAR:
-            if (HIWORD(wParam) == BN_CLICKED ||
-                HIWORD(wParam) == BN_DOUBLECLICKED)
-                cfg.scrollbar = IsDlgButtonChecked (hwnd, IDC_SCROLLBAR);
-            break;
-          case IDC_LOCKSIZE:
-            if (HIWORD(wParam) == BN_CLICKED ||
-                HIWORD(wParam) == BN_DOUBLECLICKED)
-                cfg.locksize = IsDlgButtonChecked (hwnd, IDC_LOCKSIZE);
-            break;
-         case IDC_WINEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               GetDlgItemText (hwnd, IDC_WINEDIT, cfg.wintitle,
-                               sizeof(cfg.wintitle)-1);
-           break;
-          case IDC_COEALWAYS:
-          case IDC_COENEVER:
-          case IDC_COENORMAL:
-            if (HIWORD(wParam) == BN_CLICKED ||
-                HIWORD(wParam) == BN_DOUBLECLICKED) {
-                cfg.close_on_exit = IsDlgButtonChecked (hwnd, IDC_COEALWAYS) ? COE_ALWAYS :
-                                    IsDlgButtonChecked (hwnd, IDC_COENEVER) ? COE_NEVER :
-                                    COE_NORMAL;
-            }
-            break;
-         case IDC_CLOSEWARN:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.warn_on_close = IsDlgButtonChecked (hwnd, IDC_CLOSEWARN);
-           break;
-         case IDC_TTEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-           GetDlgItemText (hwnd, IDC_TTEDIT, cfg.termtype,
-                           sizeof(cfg.termtype)-1);
-           break;
-         case IDC_LGFEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-           GetDlgItemText (hwnd, IDC_LGFEDIT, cfg.logfilename,
-                           sizeof(cfg.logfilename)-1);
-           break;
-         case IDC_LGFBUTTON:
-            memset(&of, 0, sizeof(of));
-#ifdef OPENFILENAME_SIZE_VERSION_400
-            of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
-#else
-            of.lStructSize = sizeof(of);
-#endif
-            of.hwndOwner = hwnd;
-            of.lpstrFilter = "All Files\0*\0\0\0";
-            of.lpstrCustomFilter = NULL;
-            of.nFilterIndex = 1;
-            of.lpstrFile = filename; strcpy(filename, cfg.logfilename);
-            of.nMaxFile = sizeof(filename);
-            of.lpstrFileTitle = NULL;
-            of.lpstrInitialDir = NULL;
-            of.lpstrTitle = "Select session log file";
-            of.Flags = 0;
-            if (GetSaveFileName(&of)) {
-                strcpy(cfg.logfilename, filename);
-                SetDlgItemText (hwnd, IDC_LGFEDIT, cfg.logfilename);
-            }
-           break;
-         case IDC_LSTATOFF:
-         case IDC_LSTATASCII:
-         case IDC_LSTATRAW:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               if (IsDlgButtonChecked (hwnd, IDC_LSTATOFF)) cfg.logtype = 0;
-               if (IsDlgButtonChecked (hwnd, IDC_LSTATASCII)) cfg.logtype = 1;
-               if (IsDlgButtonChecked (hwnd, IDC_LSTATRAW)) cfg.logtype = 2;
-           }
-           break;
-         case IDC_TSEDIT:
-         case IDC_R_TSEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               GetDlgItemText (hwnd, LOWORD(wParam), cfg.termspeed,
-                               sizeof(cfg.termspeed)-1);
-           break;
-         case IDC_LOGEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               GetDlgItemText (hwnd, IDC_LOGEDIT, cfg.username,
-                               sizeof(cfg.username)-1);
-           break;
-         case IDC_RLLUSEREDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               GetDlgItemText (hwnd, IDC_RLLUSEREDIT, cfg.localusername,
-                               sizeof(cfg.localusername)-1);
-           break;
-         case IDC_EMBSD:
-         case IDC_EMRFC:
-           cfg.rfc_environ = IsDlgButtonChecked (hwnd, IDC_EMRFC);
-           break;
-         case IDC_ENVADD:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-              char str[sizeof(cfg.environmt)];
-               char *p;
-               GetDlgItemText (hwnd, IDC_VAREDIT, str, sizeof(str)-1);
-               if (!*str) {
-                   MessageBeep(0);
-                   break;
-               }
-               p = str + strlen(str);
-               *p++ = '\t';
-               GetDlgItemText (hwnd, IDC_VALEDIT, p, sizeof(str)-1-(p-str));
-               if (!*p) {
-                   MessageBeep(0);
-                   break;
-               }
-              p = cfg.environmt;
-               while (*p) {
-                   while (*p) p++;
-                   p++;
-               }
-              if ((p-cfg.environmt) + strlen(str) + 2 < sizeof(cfg.environmt)) {
-                   strcpy (p, str);
-                   p[strlen(str)+1] = '\0';
-                   SendDlgItemMessage (hwnd, IDC_ENVLIST, LB_ADDSTRING,
-                                       0, (LPARAM)str);
-                   SetDlgItemText (hwnd, IDC_VAREDIT, "");
-                   SetDlgItemText (hwnd, IDC_VALEDIT, "");
-               } else {
-                   MessageBox(hwnd, "Environment too big", "PuTTY Error",
-                              MB_OK | MB_ICONERROR);
-               }
-           }
-           break;
-         case IDC_ENVREMOVE:
-           if (HIWORD(wParam) != BN_CLICKED &&
-               HIWORD(wParam) != BN_DOUBLECLICKED)
-               break;
-           i = SendDlgItemMessage (hwnd, IDC_ENVLIST, LB_GETCURSEL, 0, 0);
-           if (i == LB_ERR)
-               MessageBeep (0);
-           else {
-               char *p, *q;
-
-               SendDlgItemMessage (hwnd, IDC_ENVLIST, LB_DELETESTRING,
-                                   i, 0);
-              p = cfg.environmt;
-               while (i > 0) {
-                   if (!*p)
-                       goto disaster;
-                   while (*p) p++;
-                   p++;
-                   i--;
-               }
-               q = p;
-               if (!*p)
-                   goto disaster;
-               while (*p) p++;
-               p++;
-               while (*p) {
-                   while (*p)
-                       *q++ = *p++;
-                   *q++ = *p++;
-               }
-               *q = '\0';
-               disaster:;
-           }
-           break;
-         case IDC_NOPTY:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.nopty = IsDlgButtonChecked (hwnd, IDC_NOPTY);
-           break;
-         case IDC_COMPRESS:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.compression = IsDlgButtonChecked (hwnd, IDC_COMPRESS);
-           break;
-         case IDC_BUGGYMAC:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.buggymac = IsDlgButtonChecked (hwnd, IDC_BUGGYMAC);
-           break;
-         case IDC_AGENTFWD:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.agentfwd = IsDlgButtonChecked (hwnd, IDC_AGENTFWD);
-           break;
-         case IDC_CIPHER3DES:
-         case IDC_CIPHERBLOWF:
-         case IDC_CIPHERDES:
-         case IDC_CIPHERAES:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               if (IsDlgButtonChecked (hwnd, IDC_CIPHER3DES))
-                   cfg.cipher = CIPHER_3DES;
-               else if (IsDlgButtonChecked (hwnd, IDC_CIPHERBLOWF))
-                   cfg.cipher = CIPHER_BLOWFISH;
-               else if (IsDlgButtonChecked (hwnd, IDC_CIPHERDES))
-                   cfg.cipher = CIPHER_DES;
-               else if (IsDlgButtonChecked (hwnd, IDC_CIPHERAES))
-                   cfg.cipher = CIPHER_AES;
-           }
-           break;
-         case IDC_SSHPROT1:
-         case IDC_SSHPROT2:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               if (IsDlgButtonChecked (hwnd, IDC_SSHPROT1))
-                   cfg.sshprot = 1;
-               else if (IsDlgButtonChecked (hwnd, IDC_SSHPROT2))
-                   cfg.sshprot = 2;
-           }
-           break;
-         case IDC_AUTHTIS:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.try_tis_auth = IsDlgButtonChecked (hwnd, IDC_AUTHTIS);
-           break;
-         case IDC_PKEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               GetDlgItemText (hwnd, IDC_PKEDIT, cfg.keyfile,
-                               sizeof(cfg.keyfile)-1);
-           break;
-         case IDC_CMDEDIT:
-           if (HIWORD(wParam) == EN_CHANGE)
-               GetDlgItemText (hwnd, IDC_CMDEDIT, cfg.remote_cmd,
-                               sizeof(cfg.remote_cmd)-1);
-           break;
-         case IDC_PKBUTTON:
-            memset(&of, 0, sizeof(of));
-#ifdef OPENFILENAME_SIZE_VERSION_400
-            of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
-#else
-            of.lStructSize = sizeof(of);
-#endif
-            of.hwndOwner = hwnd;
-            of.lpstrFilter = "All Files\0*\0\0\0";
-            of.lpstrCustomFilter = NULL;
-            of.nFilterIndex = 1;
-            of.lpstrFile = filename; strcpy(filename, cfg.keyfile);
-            of.nMaxFile = sizeof(filename);
-            of.lpstrFileTitle = NULL;
-            of.lpstrInitialDir = NULL;
-            of.lpstrTitle = "Select Public Key File";
-            of.Flags = 0;
-            if (GetOpenFileName(&of)) {
-                strcpy(cfg.keyfile, filename);
-                SetDlgItemText (hwnd, IDC_PKEDIT, cfg.keyfile);
-            }
-           break;
-         case IDC_RAWCNP:
-           cfg.rawcnp = IsDlgButtonChecked (hwnd, IDC_RAWCNP);
-         case IDC_MBWINDOWS:
-         case IDC_MBXTERM:
-           cfg.mouse_is_xterm = IsDlgButtonChecked (hwnd, IDC_MBXTERM);
-           break;
-         case IDC_CCSET:
-           {
-               BOOL ok;
-               int i;
-               int n = GetDlgItemInt (hwnd, IDC_CCEDIT, &ok, FALSE);
-
-               if (!ok)
-                   MessageBeep (0);
-               else {
-                   for (i=0; i<256; i++)
-                       if (SendDlgItemMessage (hwnd, IDC_CCLIST, LB_GETSEL,
-                                               i, 0)) {
-                           char str[100];
-                           cfg.wordness[i] = n;
-                           SendDlgItemMessage (hwnd, IDC_CCLIST,
-                                               LB_DELETESTRING, i, 0);
-                           sprintf(str, "%d\t(0x%02X)\t%c\t%d", i, i,
-                                   (i>=0x21 && i != 0x7F) ? i : ' ',
-                                   cfg.wordness[i]);
-                           SendDlgItemMessage (hwnd, IDC_CCLIST,
-                                               LB_INSERTSTRING, i,
-                                               (LPARAM)str);
-                       }
-               }
-           }
-           break;
-         case IDC_BOLDCOLOUR:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               int n, i;
-               cfg.bold_colour = IsDlgButtonChecked (hwnd, IDC_BOLDCOLOUR);
-               n = SendDlgItemMessage (hwnd, IDC_COLOURLIST, LB_GETCOUNT, 0, 0);
-               if (n != 12+10*cfg.bold_colour) {
-                   for (i=n; i-- >0 ;)
-                       SendDlgItemMessage (hwnd, IDC_COLOURLIST,
-                                               LB_DELETESTRING, i, 0);
-                   for (i=0; i<22; i++)
-                       if (cfg.bold_colour || permcolour[i])
-                           SendDlgItemMessage (hwnd, IDC_COLOURLIST, 
-                                               LB_ADDSTRING, 0,
-                                               (LPARAM) colours[i]);
-               }
-           }
-           break;
-         case IDC_PALETTE:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.try_palette = IsDlgButtonChecked (hwnd, IDC_PALETTE);
-           break;
-         case IDC_COLOURLIST:
-           if (HIWORD(wParam) == LBN_DBLCLK ||
-               HIWORD(wParam) == LBN_SELCHANGE) {
-               int i = SendDlgItemMessage (hwnd, IDC_COLOURLIST, LB_GETCURSEL,
-                                           0, 0);
-               if (!cfg.bold_colour)
-                   i = (i < 3 ? i*2 : i == 3 ? 5 : i*2-2);
-               SetDlgItemInt (hwnd, IDC_RVALUE, cfg.colours[i][0], FALSE);
-               SetDlgItemInt (hwnd, IDC_GVALUE, cfg.colours[i][1], FALSE);
-               SetDlgItemInt (hwnd, IDC_BVALUE, cfg.colours[i][2], FALSE);
-           }
-           break;
-         case IDC_CHANGE:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               static CHOOSECOLOR cc;
-               static DWORD custom[16] = {0};   /* zero initialisers */
-               int i = SendDlgItemMessage (hwnd, IDC_COLOURLIST, LB_GETCURSEL,
-                                           0, 0);
-               if (!cfg.bold_colour)
-                   i = (i < 3 ? i*2 : i == 3 ? 5 : i*2-2);
-               cc.lStructSize = sizeof(cc);
-               cc.hwndOwner = hwnd;
-               cc.hInstance = (HWND)hinst;
-               cc.lpCustColors = custom;
-               cc.rgbResult = RGB (cfg.colours[i][0], cfg.colours[i][1],
-                                   cfg.colours[i][2]);
-               cc.Flags = CC_FULLOPEN | CC_RGBINIT;
-               if (ChooseColor(&cc)) {
-                   cfg.colours[i][0] =
-                       (unsigned char) (cc.rgbResult & 0xFF);
-                   cfg.colours[i][1] =
-                       (unsigned char) (cc.rgbResult >> 8) & 0xFF;
-                   cfg.colours[i][2] =
-                       (unsigned char) (cc.rgbResult >> 16) & 0xFF;
-                   SetDlgItemInt (hwnd, IDC_RVALUE, cfg.colours[i][0],
-                                  FALSE);
-                   SetDlgItemInt (hwnd, IDC_GVALUE, cfg.colours[i][1],
-                                  FALSE);
-                   SetDlgItemInt (hwnd, IDC_BVALUE, cfg.colours[i][2],
-                                  FALSE);
-               }
-           }
-           break;
-         case IDC_NOXLAT:
-         case IDC_KOI8WIN1251:
-         case IDC_88592WIN1250:
-         case IDC_88592CP852:
-           cfg.xlat_enablekoiwin =
-               IsDlgButtonChecked (hwnd, IDC_KOI8WIN1251);
-           cfg.xlat_88592w1250 =
-               IsDlgButtonChecked (hwnd, IDC_88592WIN1250);
-           cfg.xlat_88592cp852 =
-               IsDlgButtonChecked (hwnd, IDC_88592CP852);
-           break;
-         case IDC_CAPSLOCKCYR:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED) {
-               cfg.xlat_capslockcyr =
-                   IsDlgButtonChecked (hwnd, IDC_CAPSLOCKCYR);
-           }
-           break;
-         case IDC_VTXWINDOWS:
-         case IDC_VTOEMANSI:
-         case IDC_VTOEMONLY:
-         case IDC_VTPOORMAN:
-           cfg.vtmode =
-               (IsDlgButtonChecked (hwnd, IDC_VTXWINDOWS) ? VT_XWINDOWS :
-                IsDlgButtonChecked (hwnd, IDC_VTOEMANSI) ? VT_OEMANSI :
-                IsDlgButtonChecked (hwnd, IDC_VTOEMONLY) ? VT_OEMONLY :
-                VT_POORMAN);
-           break;
-         case IDC_X11_FORWARD:
-           if (HIWORD(wParam) == BN_CLICKED ||
-               HIWORD(wParam) == BN_DOUBLECLICKED)
-               cfg.x11_forward = IsDlgButtonChecked (hwnd, IDC_X11_FORWARD);
-           break;
-          case IDC_X11_DISPLAY:
-            if (HIWORD(wParam) == EN_CHANGE)
-                GetDlgItemText (hwnd, IDC_X11_DISPLAY, cfg.x11_display,
-                                sizeof(cfg.x11_display)-1);
-            break;
-       }
-       return 0;
+                MessageBeep(0);
+        }
+        break;
       case WM_CLOSE:
-       EndDialog (hwnd, 0);
+        if (requested_help) {
+            WinHelp(hwnd, help_path, HELP_QUIT, 0);
+            requested_help = FALSE;
+        }
+       EndDialog(hwnd, 0);
        return 0;
 
        /* Grrr Explorer will maximize Dialogs! */
       case WM_SIZE:
        if (wParam == SIZE_MAXIMIZED)
-          force_normal(hwnd);
+           force_normal(hwnd);
        return 0;
+
     }
     return 0;
 }
 
-static int CALLBACK MainDlgProc (HWND hwnd, UINT msg,
-                                WPARAM wParam, LPARAM lParam) {
-    if (msg == WM_COMMAND && LOWORD(wParam) == IDOK) {
-    }
-    if (msg == WM_COMMAND && LOWORD(wParam) == IDCX_ABOUT) {
-       EnableWindow(hwnd, 0);
-       DialogBox(hinst, MAKEINTRESOURCE(IDD_ABOUTBOX),
-                 GetParent(hwnd), AboutProc);
-       EnableWindow(hwnd, 1);
-        SetActiveWindow(hwnd);
-    }
-    return GenericMainDlgProc (hwnd, msg, wParam, lParam, 0);
+void modal_about_box(HWND hwnd)
+{
+    EnableWindow(hwnd, 0);
+    DialogBox(hinst, MAKEINTRESOURCE(IDD_ABOUTBOX), hwnd, AboutProc);
+    EnableWindow(hwnd, 1);
+    SetActiveWindow(hwnd);
 }
 
-static int CALLBACK ReconfDlgProc (HWND hwnd, UINT msg,
-                                  WPARAM wParam, LPARAM lParam) {
-    return GenericMainDlgProc (hwnd, msg, wParam, lParam, 1);
+void show_help(HWND hwnd)
+{
+    if (help_path) {
+       WinHelp(hwnd, help_path,
+               help_has_contents ? HELP_FINDER : HELP_CONTENTS,
+               0);
+       requested_help = TRUE;
+    }
 }
 
-void defuse_showwindow(void) {
+void defuse_showwindow(void)
+{
     /*
      * Work around the fact that the app's first call to ShowWindow
      * will ignore the default in favour of the shell-provided
      * setting.
      */
     {
-        HWND hwnd;
-        hwnd = CreateDialog (hinst, MAKEINTRESOURCE(IDD_ABOUTBOX),
-                             NULL, NullDlgProc);
-        ShowWindow(hwnd, SW_HIDE);
-        DestroyWindow(hwnd);
+       HWND hwnd;
+       hwnd = CreateDialog(hinst, MAKEINTRESOURCE(IDD_ABOUTBOX),
+                           NULL, NullDlgProc);
+       ShowWindow(hwnd, SW_HIDE);
+       SetActiveWindow(hwnd);
+       DestroyWindow(hwnd);
     }
 }
 
-int do_config (void) {
+int do_config(void)
+{
     int ret;
 
-    get_sesslist(TRUE);
-    savedsession[0] = '\0';
-    ret = DialogBox (hinst, MAKEINTRESOURCE(IDD_MAINBOX), NULL, MainDlgProc);
-    get_sesslist(FALSE);
+    ctrlbox = ctrl_new_box();
+    setup_config_box(ctrlbox, &sesslist, FALSE, 0);
+    win_setup_config_box(ctrlbox, &dp.hwnd, (help_path != NULL), FALSE);
+    dp_init(&dp);
+    winctrl_init(&ctrls_base);
+    winctrl_init(&ctrls_panel);
+    dp_add_tree(&dp, &ctrls_base);
+    dp_add_tree(&dp, &ctrls_panel);
+    dp.errtitle = "PuTTY Error";
+    dp.data = &cfg;
+    dp.shortcuts['g'] = TRUE;         /* the treeview: `Cate&gory' */
+
+    get_sesslist(&sesslist, TRUE);
+    ret =
+       DialogBox(hinst, MAKEINTRESOURCE(IDD_MAINBOX), NULL,
+                 GenericMainDlgProc);
+    get_sesslist(&sesslist, FALSE);
+
+    ctrl_free_box(ctrlbox);
+    winctrl_cleanup(&ctrls_panel);
+    winctrl_cleanup(&ctrls_base);
+    dp_cleanup(&dp);
 
     return ret;
 }
 
-int do_reconfig (HWND hwnd) {
+int do_reconfig(HWND hwnd)
+{
     Config backup_cfg;
     int ret;
 
     backup_cfg = cfg;                 /* structure copy */
-    ret = DialogBox (hinst, MAKEINTRESOURCE(IDD_RECONF), hwnd, ReconfDlgProc);
+
+    ctrlbox = ctrl_new_box();
+    setup_config_box(ctrlbox, NULL, TRUE, cfg.protocol);
+    win_setup_config_box(ctrlbox, &dp.hwnd, (help_path != NULL), TRUE);
+    dp_init(&dp);
+    winctrl_init(&ctrls_base);
+    winctrl_init(&ctrls_panel);
+    dp_add_tree(&dp, &ctrls_base);
+    dp_add_tree(&dp, &ctrls_panel);
+    dp.errtitle = "PuTTY Error";
+    dp.data = &cfg;
+    dp.shortcuts['g'] = TRUE;         /* the treeview: `Cate&gory' */
+
+    ret =
+       DialogBox(hinst, MAKEINTRESOURCE(IDD_MAINBOX), NULL,
+                 GenericMainDlgProc);
+
+    ctrl_free_box(ctrlbox);
+    winctrl_cleanup(&ctrls_base);
+    winctrl_cleanup(&ctrls_panel);
+    dp_cleanup(&dp);
+
     if (!ret)
        cfg = backup_cfg;              /* structure copy */
 
     return ret;
 }
 
-void logevent (char *string) {
+void logevent(void *frontend, char *string)
+{
     char timebuf[40];
     time_t t;
 
+    log_eventlog(logctx, string);
+
     if (nevents >= negsize) {
        negsize += 64;
-       events = srealloc (events, negsize * sizeof(*events));
+       events = sresize(events, negsize, char *);
     }
 
     time(&t);
-    strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S\t", localtime(&t));
+    strftime(timebuf, sizeof(timebuf), "%Y-%m-%d %H:%M:%S\t",
+            localtime(&t));
 
-    events[nevents] = smalloc(strlen(timebuf)+strlen(string)+1);
+    events[nevents] = snewn(strlen(timebuf) + strlen(string) + 1, char);
     strcpy(events[nevents], timebuf);
     strcat(events[nevents], string);
     if (logbox) {
-        int count;
-       SendDlgItemMessage (logbox, IDN_LIST, LB_ADDSTRING,
-                           0, (LPARAM)events[nevents]);
-       count = SendDlgItemMessage (logbox, IDN_LIST, LB_GETCOUNT, 0, 0);
-       SendDlgItemMessage (logbox, IDN_LIST, LB_SETTOPINDEX, count-1, 0);
+       int count;
+       SendDlgItemMessage(logbox, IDN_LIST, LB_ADDSTRING,
+                          0, (LPARAM) events[nevents]);
+       count = SendDlgItemMessage(logbox, IDN_LIST, LB_GETCOUNT, 0, 0);
+       SendDlgItemMessage(logbox, IDN_LIST, LB_SETTOPINDEX, count - 1, 0);
     }
     nevents++;
 }
 
-void showeventlog (HWND hwnd) {
+void showeventlog(HWND hwnd)
+{
     if (!logbox) {
-       logbox = CreateDialog (hinst, MAKEINTRESOURCE(IDD_LOGBOX),
-                              hwnd, LogProc);
-       ShowWindow (logbox, SW_SHOWNORMAL);
+       logbox = CreateDialog(hinst, MAKEINTRESOURCE(IDD_LOGBOX),
+                             hwnd, LogProc);
+       ShowWindow(logbox, SW_SHOWNORMAL);
     }
     SetActiveWindow(logbox);
 }
 
-void showabout (HWND hwnd) {
-    DialogBox(hinst, MAKEINTRESOURCE(IDD_ABOUTBOX),hwnd, AboutProc);
+void showabout(HWND hwnd)
+{
+    DialogBox(hinst, MAKEINTRESOURCE(IDD_ABOUTBOX), hwnd, AboutProc);
 }
 
-void verify_ssh_host_key(char *host, int port, char *keytype,
-                         char *keystr, char *fingerprint) {
+void verify_ssh_host_key(void *frontend, char *host, int port, char *keytype,
+                        char *keystr, char *fingerprint)
+{
     int ret;
 
     static const char absentmsg[] =
-        "The server's host key is not cached in the registry. You\n"
-        "have no guarantee that the server is the computer you\n"
-        "think it is.\n"
-        "The server's key fingerprint is:\n"
-        "%s\n"
-        "If you trust this host, hit Yes to add the key to\n"
-        "PuTTY's cache and carry on connecting.\n"
-        "If you do not trust this host, hit No to abandon the\n"
-        "connection.\n";
+       "The server's host key is not cached in the registry. You\n"
+       "have no guarantee that the server is the computer you\n"
+       "think it is.\n"
+       "The server's key fingerprint is:\n"
+       "%s\n"
+       "If you trust this host, hit Yes to add the key to\n"
+       "PuTTY's cache and carry on connecting.\n"
+       "If you want to carry on connecting just once, without\n"
+       "adding the key to the cache, hit No.\n"
+       "If you do not trust this host, hit Cancel to abandon the\n"
+       "connection.\n";
 
     static const char wrongmsg[] =
-        "WARNING - POTENTIAL SECURITY BREACH!\n"
-        "\n"
-        "The server's host key does not match the one PuTTY has\n"
-        "cached in the registry. This means that either the\n"
-        "server administrator has changed the host key, or you\n"
-        "have actually connected to another computer pretending\n"
-        "to be the server.\n"
-        "The new key fingerprint is:\n"
-        "%s\n"
-        "If you were expecting this change and trust the new key,\n"
-        "hit Yes to update PuTTY's cache and continue connecting.\n"
-        "If you want to carry on connecting but without updating\n"
-        "the cache, hit No.\n"
-        "If you want to abandon the connection completely, hit\n"
-        "Cancel. Hitting Cancel is the ONLY guaranteed safe\n"
-        "choice.\n";
+       "WARNING - POTENTIAL SECURITY BREACH!\n"
+       "\n"
+       "The server's host key does not match the one PuTTY has\n"
+       "cached in the registry. This means that either the\n"
+       "server administrator has changed the host key, or you\n"
+       "have actually connected to another computer pretending\n"
+       "to be the server.\n"
+       "The new key fingerprint is:\n"
+       "%s\n"
+       "If you were expecting this change and trust the new key,\n"
+       "hit Yes to update PuTTY's cache and continue connecting.\n"
+       "If you want to carry on connecting but without updating\n"
+       "the cache, hit No.\n"
+       "If you want to abandon the connection completely, hit\n"
+       "Cancel. Hitting Cancel is the ONLY guaranteed safe\n" "choice.\n";
 
     static const char mbtitle[] = "PuTTY Security Alert";
 
-    
-    char message[160+                  /* sensible fingerprint max size */
-                 (sizeof(absentmsg) > sizeof(wrongmsg) ?
-                  sizeof(absentmsg) : sizeof(wrongmsg))];
+    char message[160 +
+       /* sensible fingerprint max size */
+       (sizeof(absentmsg) > sizeof(wrongmsg) ?
+        sizeof(absentmsg) : sizeof(wrongmsg))];
 
     /*
      * Verify the key against the registry.
      */
     ret = verify_host_key(host, port, keytype, keystr);
 
-    if (ret == 0)                      /* success - key matched OK */
-        return;
-    if (ret == 2) {                    /* key was different */
-        int mbret;
-        sprintf(message, wrongmsg, fingerprint);
-        mbret = MessageBox(NULL, message, mbtitle,
-                           MB_ICONWARNING | MB_YESNOCANCEL);
-        if (mbret == IDYES)
-            store_host_key(host, port, keytype, keystr);
-        if (mbret == IDCANCEL)
-            exit(0);
-    }
-    if (ret == 1) {                    /* key was absent */
-        int mbret;
-        sprintf(message, absentmsg, fingerprint);
-        mbret = MessageBox(NULL, message, mbtitle,
-                           MB_ICONWARNING | MB_YESNO);
-        if (mbret == IDNO)
-            exit(0);
-        store_host_key(host, port, keytype, keystr);
+    if (ret == 0)                     /* success - key matched OK */
+       return;
+    if (ret == 2) {                   /* key was different */
+       int mbret;
+       sprintf(message, wrongmsg, fingerprint);
+       mbret = MessageBox(NULL, message, mbtitle,
+                          MB_ICONWARNING | MB_YESNOCANCEL);
+       if (mbret == IDYES)
+           store_host_key(host, port, keytype, keystr);
+       if (mbret == IDCANCEL)
+           cleanup_exit(0);
+    }
+    if (ret == 1) {                   /* key was absent */
+       int mbret;
+       sprintf(message, absentmsg, fingerprint);
+       mbret = MessageBox(NULL, message, mbtitle,
+                          MB_ICONWARNING | MB_YESNOCANCEL);
+       if (mbret == IDYES)
+           store_host_key(host, port, keytype, keystr);
+       if (mbret == IDCANCEL)
+           cleanup_exit(0);
     }
 }
 
 /*
+ * Ask whether the selected cipher is acceptable (since it was
+ * below the configured 'warn' threshold).
+ * cs: 0 = both ways, 1 = client->server, 2 = server->client
+ */
+void askcipher(void *frontend, char *ciphername, int cs)
+{
+    static const char mbtitle[] = "PuTTY Security Alert";
+    static const char msg[] =
+       "The first %.35scipher supported by the server\n"
+       "is %.64s, which is below the configured\n"
+       "warning threshold.\n"
+       "Do you want to continue with this connection?\n";
+    /* guessed cipher name + type max length */
+    char message[100 + sizeof(msg)];
+    int mbret;
+
+    sprintf(message, msg,
+           (cs == 0) ? "" :
+           (cs == 1) ? "client-to-server " :
+                       "server-to-client ",
+           ciphername);
+    mbret = MessageBox(NULL, message, mbtitle,
+                      MB_ICONWARNING | MB_YESNO);
+    if (mbret == IDYES)
+       return;
+    else
+       cleanup_exit(0);
+}
+
+/*
  * Ask whether to wipe a session log file before writing to it.
  * Returns 2 for wipe, 1 for append, 0 for cancel (don't log).
  */
-int askappend(char *filename) {
+int askappend(void *frontend, Filename filename)
+{
     static const char mbtitle[] = "PuTTY Log to File";
     static const char msgtemplate[] =
        "The session log file \"%.*s\" already exists.\n"
@@ -2187,10 +800,11 @@ int askappend(char *filename) {
        "or Cancel to disable logging.";
     char message[sizeof(msgtemplate) + FILENAME_MAX];
     int mbret;
-    sprintf(message, msgtemplate, FILENAME_MAX, filename);
+
+    sprintf(message, msgtemplate, FILENAME_MAX, filename.path);
 
     mbret = MessageBox(NULL, message, mbtitle,
-                       MB_ICONQUESTION | MB_YESNOCANCEL);
+                      MB_ICONQUESTION | MB_YESNOCANCEL);
     if (mbret == IDYES)
        return 2;
     else if (mbret == IDNO)
@@ -2198,3 +812,30 @@ int askappend(char *filename) {
     else
        return 0;
 }
+
+/*
+ * Warn about the obsolescent key file format.
+ * 
+ * Uniquely among these functions, this one does _not_ expect a
+ * frontend handle. This means that if PuTTY is ported to a
+ * platform which requires frontend handles, this function will be
+ * an anomaly. Fortunately, the problem it addresses will not have
+ * been present on that platform, so it can plausibly be
+ * implemented as an empty function.
+ */
+void old_keyfile_warning(void)
+{
+    static const char mbtitle[] = "PuTTY Key File Warning";
+    static const char message[] =
+       "You are loading an SSH 2 private key which has an\n"
+       "old version of the file format. This means your key\n"
+       "file is not fully tamperproof. Future versions of\n"
+       "PuTTY may stop supporting this private key format,\n"
+       "so we recommend you convert your key to the new\n"
+       "format.\n"
+       "\n"
+       "You can perform this conversion by loading the key\n"
+       "into PuTTYgen and then saving it again.";
+
+    MessageBox(NULL, message, mbtitle, MB_OK);
+}