Yet more global-removal. The static variables in logging.c are now
[u/mdw/putty] / window.c
index 439495a..e5f2280 100644 (file)
--- a/window.c
+++ b/window.c
 #endif
 #endif
 
+#ifndef NO_MULTIMON
 #if WINVER < 0x0500
 #define COMPILE_MULTIMON_STUBS
 #include <multimon.h>
 #endif
+#endif
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -24,6 +26,7 @@
 
 #define PUTTY_DO_GLOBALS              /* actually _define_ globals */
 #include "putty.h"
+#include "terminal.h"
 #include "winstuff.h"
 #include "storage.h"
 #include "win_res.h"
@@ -104,9 +107,18 @@ static WPARAM pend_netevent_wParam = 0;
 static LPARAM pend_netevent_lParam = 0;
 static void enact_pending_netevent(void);
 static void flash_window(int mode);
+static void sys_cursor_update(void);
+static int is_shift_pressed(void);
+static int get_fullscreen_rect(RECT * ss);
 
 static time_t last_movement = 0;
 
+static int caret_x = -1, caret_y = -1;
+
+static void *ldisc;
+static Backend *back;
+static void *backhandle;
+
 #define FONT_NORMAL 0
 #define FONT_BOLD 1
 #define FONT_UNDERLINE 2
@@ -154,12 +166,14 @@ static char *window_name, *icon_name;
 
 static int compose_state = 0;
 
+static int wsa_started = 0;
+
 static OSVERSIONINFO osVersion;
 
 static UINT wm_mousewheel = WM_MOUSEWHEEL;
 
 /* Dummy routine, only required in plink. */
-void ldisc_update(int echo, int edit)
+void ldisc_update(void *frontend, int echo, int edit)
 {
 }
 
@@ -187,6 +201,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
        WSACleanup();
        return 1;
     }
+    wsa_started = 1;
     /* WISHLIST: maybe allow config tweaking even if winsock not present? */
     sk_init();
 
@@ -247,6 +262,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
      */
     {
        char *p;
+       int got_host = 0;
 
        default_protocol = DEFAULT_PROTOCOL;
        default_port = DEFAULT_PORT;
@@ -255,54 +271,16 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
        do_defaults(NULL, &cfg);
 
        p = cmdline;
-       while (*p && isspace(*p))
-           p++;
 
        /*
-        * Process command line options first. Yes, this can be
-        * done better, and it will be as soon as I have the
-        * energy...
+        * Process a couple of command-line options which are more
+        * easily dealt with before the line is broken up into
+        * words. These are the soon-to-be-defunct @sessionname and
+        * the internal-use-only &sharedmemoryhandle, neither of
+        * which are combined with anything else.
         */
-       while (*p == '-') {
-           char *q = p + strcspn(p, " \t");
+       while (*p && isspace(*p))
            p++;
-           if (q == p + 3 &&
-               tolower(p[0]) == 's' &&
-               tolower(p[1]) == 's' && tolower(p[2]) == 'h') {
-               default_protocol = cfg.protocol = PROT_SSH;
-               default_port = cfg.port = 22;
-           } else if (q == p + 7 &&
-                      tolower(p[0]) == 'c' &&
-                      tolower(p[1]) == 'l' &&
-                      tolower(p[2]) == 'e' &&
-                      tolower(p[3]) == 'a' &&
-                      tolower(p[4]) == 'n' &&
-                      tolower(p[5]) == 'u' && tolower(p[6]) == 'p') {
-               /*
-                * `putty -cleanup'. Remove all registry entries
-                * associated with PuTTY, and also find and delete
-                * the random seed file.
-                */
-               if (MessageBox(NULL,
-                              "This procedure will remove ALL Registry\n"
-                              "entries associated with PuTTY, and will\n"
-                              "also remove the PuTTY random seed file.\n"
-                              "\n"
-                              "THIS PROCESS WILL DESTROY YOUR SAVED\n"
-                              "SESSIONS. Are you really sure you want\n"
-                              "to continue?",
-                              "PuTTY Warning",
-                              MB_YESNO | MB_ICONWARNING) == IDYES) {
-                   cleanup_all();
-               }
-               exit(0);
-           }
-           p = q + strspn(q, " \t");
-       }
-
-       /*
-        * An initial @ means to activate a saved session.
-        */
        if (*p == '@') {
            int i = strlen(p);
            while (i > 1 && isspace(p[i - 1]))
@@ -332,53 +310,107 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
                WSACleanup();
                return 0;
            }
-       } else if (*p) {
-           char *q = p;
+       } else {
            /*
-            * If the hostname starts with "telnet:", set the
-            * protocol to Telnet and process the string as a
-            * Telnet URL.
+            * Otherwise, break up the command line and deal with
+            * it sensibly.
             */
-           if (!strncmp(q, "telnet:", 7)) {
-               char c;
-
-               q += 7;
-               if (q[0] == '/' && q[1] == '/')
-                   q += 2;
-               cfg.protocol = PROT_TELNET;
-               p = q;
-               while (*p && *p != ':' && *p != '/')
-                   p++;
-               c = *p;
-               if (*p)
-                   *p++ = '\0';
-               if (c == ':')
-                   cfg.port = atoi(p);
-               else
-                   cfg.port = -1;
-               strncpy(cfg.host, q, sizeof(cfg.host) - 1);
-               cfg.host[sizeof(cfg.host) - 1] = '\0';
-           } else {
-               while (*p && !isspace(*p))
-                   p++;
-               if (*p)
-                   *p++ = '\0';
-               strncpy(cfg.host, q, sizeof(cfg.host) - 1);
-               cfg.host[sizeof(cfg.host) - 1] = '\0';
-               while (*p && isspace(*p))
-                   p++;
-               if (*p)
-                   cfg.port = atoi(p);
-               else
-                   cfg.port = -1;
-           }
-       } else {
-           if (!do_config()) {
-               WSACleanup();
-               return 0;
+           int argc, i;
+           char **argv;
+           
+           split_into_argv(cmdline, &argc, &argv, NULL);
+
+           for (i = 0; i < argc; i++) {
+               char *p = argv[i];
+               int ret;
+
+               ret = cmdline_process_param(p, i+1<argc?argv[i+1]:NULL, 1);
+               if (ret == -2) {
+                   cmdline_error("option \"%s\" requires an argument", p);
+               } else if (ret == 2) {
+                   i++;               /* skip next argument */
+               } else if (ret == 1) {
+                   continue;          /* nothing further needs doing */
+               } else if (!strcmp(p, "-cleanup")) {
+                   /*
+                    * `putty -cleanup'. Remove all registry
+                    * entries associated with PuTTY, and also find
+                    * and delete the random seed file.
+                    */
+                   if (MessageBox(NULL,
+                                  "This procedure will remove ALL Registry\n"
+                                  "entries associated with PuTTY, and will\n"
+                                  "also remove the PuTTY random seed file.\n"
+                                  "\n"
+                                  "THIS PROCESS WILL DESTROY YOUR SAVED\n"
+                                  "SESSIONS. Are you really sure you want\n"
+                                  "to continue?",
+                                  "PuTTY Warning",
+                                  MB_YESNO | MB_ICONWARNING) == IDYES) {
+                       cleanup_all();
+                   }
+                   exit(0);
+               } else if (*p != '-') {
+                   char *q = p;
+                   if (got_host) {
+                       /*
+                        * If we already have a host name, treat
+                        * this argument as a port number. NB we
+                        * have to treat this as a saved -P
+                        * argument, so that it will be deferred
+                        * until it's a good moment to run it.
+                        */
+                       int ret = cmdline_process_param("-P", p, 1);
+                       assert(ret == 2);
+                   } else if (!strncmp(q, "telnet:", 7)) {
+                       /*
+                        * If the hostname starts with "telnet:",
+                        * set the protocol to Telnet and process
+                        * the string as a Telnet URL.
+                        */
+                       char c;
+
+                       q += 7;
+                       if (q[0] == '/' && q[1] == '/')
+                           q += 2;
+                       cfg.protocol = PROT_TELNET;
+                       p = q;
+                       while (*p && *p != ':' && *p != '/')
+                           p++;
+                       c = *p;
+                       if (*p)
+                           *p++ = '\0';
+                       if (c == ':')
+                           cfg.port = atoi(p);
+                       else
+                           cfg.port = -1;
+                       strncpy(cfg.host, q, sizeof(cfg.host) - 1);
+                       cfg.host[sizeof(cfg.host) - 1] = '\0';
+                       got_host = 1;
+                   } else {
+                       /*
+                        * Otherwise, treat this argument as a host
+                        * name.
+                        */
+                       while (*p && !isspace(*p))
+                           p++;
+                       if (*p)
+                           *p++ = '\0';
+                       strncpy(cfg.host, q, sizeof(cfg.host) - 1);
+                       cfg.host[sizeof(cfg.host) - 1] = '\0';
+                       got_host = 1;
+                   }
+               }
            }
        }
 
+       cmdline_run_saved();
+
+       if (!*cfg.host && !do_config()) {
+           WSACleanup();
+           return 0;
+       }
+
        /*
         * Trim leading whitespace off the hostname if it's there.
         */
@@ -404,6 +436,21 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
         * Trim a colon suffix off the hostname if it's there.
         */
        cfg.host[strcspn(cfg.host, ":")] = '\0';
+
+       /*
+        * Remove any remaining whitespace from the hostname.
+        */
+       {
+           int p1 = 0, p2 = 0;
+           while (cfg.host[p2] != '\0') {
+               if (cfg.host[p2] != ' ' && cfg.host[p2] != '\t') {
+                   cfg.host[p1] = cfg.host[p2];
+                   p1++;
+               }
+               p2++;
+           }
+           cfg.host[p1] = '\0';
+       }
     }
 
     /*
@@ -451,8 +498,9 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 
     hwnd = NULL;
 
-    savelines = cfg.savelines;
-    term_init();
+    term = term_init(NULL);
+    logctx = log_init(NULL);
+    term_provide_logctx(term, logctx);
 
     cfgtopalette();
 
@@ -467,13 +515,12 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
     font_height = 20;
     extra_width = 25;
     extra_height = 28;
-    term_size(cfg.height, cfg.width, cfg.savelines);
-    guess_width = extra_width + font_width * cols;
-    guess_height = extra_height + font_height * rows;
+    term_size(term, cfg.height, cfg.width, cfg.savelines);
+    guess_width = extra_width + font_width * term->cols;
+    guess_height = extra_height + font_height * term->rows;
     {
        RECT r;
-       HWND w = GetDesktopWindow();
-       GetWindowRect(w, &r);
+               get_fullscreen_rect(&r);
        if (guess_width > r.right - r.left)
            guess_width = r.right - r.left;
        if (guess_height > r.bottom - r.top)
@@ -519,8 +566,8 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
      * Resize the window, now we know what size we _really_ want it
      * to be.
      */
-    guess_width = extra_width + font_width * cols;
-    guess_height = extra_height + font_height * rows;
+    guess_width = extra_width + font_width * term->cols;
+    guess_height = extra_height + font_height * term->rows;
     SetWindowPos(hwnd, NULL, 0, 0, guess_width, guess_height,
                 SWP_NOMOVE | SWP_NOREDRAW | SWP_NOZORDER);
 
@@ -546,8 +593,8 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
        si.cbSize = sizeof(si);
        si.fMask = SIF_ALL | SIF_DISABLENOSCROLL;
        si.nMin = 0;
-       si.nMax = rows - 1;
-       si.nPage = rows;
+       si.nMax = term->rows - 1;
+       si.nPage = term->rows;
        si.nPos = 0;
        SetScrollInfo(hwnd, SB_VERT, &si, FALSE);
     }
@@ -560,7 +607,9 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
        char msg[1024], *title;
        char *realhost;
 
-       error = back->init(cfg.host, cfg.port, &realhost, cfg.tcp_nodelay);
+       error = back->init((void *)term, &backhandle,
+                          cfg.host, cfg.port, &realhost, cfg.tcp_nodelay);
+       back->provide_logctx(backhandle, logctx);
        if (error) {
            sprintf(msg, "Unable to open connection to\n"
                    "%.800s\n" "%s", cfg.host, error);
@@ -575,10 +624,20 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
            title = msg;
        }
        sfree(realhost);
-       set_title(title);
-       set_icon(title);
+       set_title(NULL, title);
+       set_icon(NULL, title);
     }
 
+    /*
+     * Connect the terminal to the backend for resize purposes.
+     */
+    term_provide_resize_fn(term, back->size, backhandle);
+
+    /*
+     * Set up a line discipline.
+     */
+    ldisc = ldisc_create(term, back, backhandle, NULL);
+
     session_closed = FALSE;
 
     /*
@@ -651,7 +710,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
     /*
      * Open the initial log file if there is one.
      */
-    logfopen();
+    logfopen(logctx);
 
     /*
      * Finally show the window!
@@ -666,7 +725,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
     logpal = NULL;
     init_palette();
 
-    has_focus = (GetForegroundWindow() == hwnd);
+    term->has_focus = (GetForegroundWindow() == hwnd);
     UpdateWindow(hwnd);
 
     if (GetMessage(&msg, NULL, 0, 0) == 1) {
@@ -689,10 +748,10 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
                DispatchMessage(&msg);
 
            /* Make sure we blink everything that needs it. */
-           term_blink(0);
+           term_blink(term, 0);
 
            /* Send the paste buffer if there's anything to send */
-           term_paste();
+           term_paste(term);
 
            /* If there's nothing new in the queue then we can do everything
             * we've delayed, reading the socket, writing, and repainting
@@ -705,7 +764,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
                enact_pending_netevent();
 
                /* Force the cursor blink on */
-               term_blink(1);
+               term_blink(term, 1);
 
                if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
                    continue;
@@ -720,19 +779,22 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
                timer_id = 0;
            }
            HideCaret(hwnd);
-           term_out();
-           term_update();
+           if (GetCapture() != hwnd || 
+               (send_raw_mouse &&
+                !(cfg.mouse_override && is_shift_pressed())))
+               term_out(term);
+           term_update(term);
            ShowCaret(hwnd);
 
            flash_window(1);           /* maintain */
 
            /* The messages seem unreliable; especially if we're being tricky */
-           has_focus = (GetForegroundWindow() == hwnd);
+           term->has_focus = (GetForegroundWindow() == hwnd);
 
-           if (in_vbell)
+           if (term->in_vbell)
                /* Hmm, term_update didn't want to do an update too soon ... */
                timer_id = SetTimer(hwnd, 1, 50, NULL);
-           else if (!has_focus)
+           else if (!term->has_focus)
                timer_id = SetTimer(hwnd, 1, 500, NULL);
            else
                timer_id = SetTimer(hwnd, 1, 100, NULL);
@@ -747,6 +809,15 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
        }
     }
 
+    cleanup_exit(msg.wParam);         /* this doesn't return... */
+    return msg.wParam;                /* ... but optimiser doesn't know */
+}
+
+/*
+ * Clean up and exit.
+ */
+void cleanup_exit(int code)
+{
     /*
      * Clean up.
      */
@@ -754,7 +825,9 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
     sfree(logpal);
     if (pal)
        DeleteObject(pal);
-    WSACleanup();
+    sk_cleanup();
+    if (wsa_started)
+       WSACleanup();
 
     if (cfg.protocol == PROT_SSH) {
        random_save_seed();
@@ -763,7 +836,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 #endif
     }
 
-    return msg.wParam;
+    exit(code);
 }
 
 /*
@@ -795,8 +868,9 @@ char *do_select(SOCKET skt, int startup)
 /*
  * set or clear the "raw mouse message" mode
  */
-void set_raw_mouse_mode(int activate)
+void set_raw_mouse_mode(void *frontend, int activate)
 {
+    activate = activate && !cfg.no_mouse_rep;
     send_raw_mouse = activate;
     SetCursor(LoadCursor(NULL, activate ? IDC_ARROW : IDC_IBEAM));
 }
@@ -804,7 +878,7 @@ void set_raw_mouse_mode(int activate)
 /*
  * Print a message box and close the connection.
  */
-void connection_fatal(char *fmt, ...)
+void connection_fatal(void *frontend, char *fmt, ...)
 {
     va_list ap;
     char stuff[200];
@@ -822,6 +896,21 @@ void connection_fatal(char *fmt, ...)
 }
 
 /*
+ * Report an error at the command-line parsing stage.
+ */
+void cmdline_error(char *fmt, ...)
+{
+    va_list ap;
+    char stuff[200];
+
+    va_start(ap, fmt);
+    vsprintf(stuff, fmt, ap);
+    va_end(ap);
+    MessageBox(hwnd, stuff, "PuTTY Command Line Error", MB_ICONERROR | MB_OK);
+    exit(1);
+}
+
+/*
  * Actually do the job requested by a WM_NETEVENT
  */
 static void enact_pending_netevent(void)
@@ -1108,7 +1197,7 @@ static void init_fonts(int pick_width, int pick_height)
     }
     fontflag[0] = fontflag[1] = fontflag[2] = 1;
 
-    init_ucs_tables();
+    init_ucs();
 }
 
 static void another_font(int fontno)
@@ -1170,7 +1259,7 @@ static void deinit_fonts(void)
     }
 }
 
-void request_resize(int w, int h)
+void request_resize(void *frontend, int w, int h)
 {
     int width, height;
 
@@ -1181,7 +1270,7 @@ void request_resize(int w, int h)
     }
 
     if (cfg.resize_action == RESIZE_DISABLED) return;
-    if (h == rows && w == cols) return;
+    if (h == term->rows && w == term->cols) return;
 
     /* Sanity checks ... */
     {
@@ -1191,7 +1280,7 @@ void request_resize(int w, int h)
        switch (first_time) {
          case 1:
            /* Get the size of the screen */
-           if (GetClientRect(GetDesktopWindow(), &ss))
+           if (get_fullscreen_rect(&ss))
                /* first_time = 0 */ ;
            else {
                first_time = 2;
@@ -1211,7 +1300,7 @@ void request_resize(int w, int h)
        }
     }
 
-    term_size(h, w, cfg.savelines);
+    term_size(term, h, w, cfg.savelines);
 
     if (cfg.resize_action != RESIZE_FONT && !IsZoomed(hwnd)) {
        width = extra_width + font_width * w;
@@ -1265,10 +1354,10 @@ static void reset_window(int reinit) {
 
     /* Is the window out of position ? */
     if ( !reinit && 
-           (offset_width != (win_width-font_width*cols)/2 ||
-            offset_height != (win_height-font_height*rows)/2) ){
-       offset_width = (win_width-font_width*cols)/2;
-       offset_height = (win_height-font_height*rows)/2;
+           (offset_width != (win_width-font_width*term->cols)/2 ||
+            offset_height != (win_height-font_height*term->rows)/2) ){
+       offset_width = (win_width-font_width*term->cols)/2;
+       offset_height = (win_height-font_height*term->rows)/2;
        InvalidateRect(hwnd, NULL, TRUE);
 #ifdef RDB_DEBUG_PATCH
        debug((27, "reset_window() -> Reposition terminal"));
@@ -1284,12 +1373,12 @@ static void reset_window(int reinit) {
        extra_height = wr.bottom - wr.top - cr.bottom + cr.top;
 
        if (cfg.resize_action != RESIZE_TERM) {
-           if (  font_width != win_width/cols || 
-                 font_height != win_height/rows) {
+           if (  font_width != win_width/term->cols || 
+                 font_height != win_height/term->rows) {
                deinit_fonts();
-               init_fonts(win_width/cols, win_height/rows);
-               offset_width = (win_width-font_width*cols)/2;
-               offset_height = (win_height-font_height*rows)/2;
+               init_fonts(win_width/term->cols, win_height/term->rows);
+               offset_width = (win_width-font_width*term->cols)/2;
+               offset_height = (win_height-font_height*term->rows)/2;
                InvalidateRect(hwnd, NULL, TRUE);
 #ifdef RDB_DEBUG_PATCH
                debug((25, "reset_window() -> Z font resize to (%d, %d)",
@@ -1297,15 +1386,15 @@ static void reset_window(int reinit) {
 #endif
            }
        } else {
-           if (  font_width != win_width/cols || 
-                 font_height != win_height/rows) {
+           if (  font_width != win_width/term->cols || 
+                 font_height != win_height/term->rows) {
                /* Our only choice at this point is to change the 
                 * size of the terminal; Oh well.
                 */
-               term_size( win_height/font_height, win_width/font_width,
-                          cfg.savelines);
-               offset_width = (win_width-font_width*cols)/2;
-               offset_height = (win_height-font_height*rows)/2;
+               term_size(term, win_height/font_height, win_width/font_width,
+                         cfg.savelines);
+               offset_width = (win_width-font_width*term->cols)/2;
+               offset_height = (win_height-font_height*term->rows)/2;
                InvalidateRect(hwnd, NULL, TRUE);
 #ifdef RDB_DEBUG_PATCH
                debug((27, "reset_window() -> Zoomed term_size"));
@@ -1327,16 +1416,16 @@ static void reset_window(int reinit) {
        extra_width = wr.right - wr.left - cr.right + cr.left + offset_width*2;
        extra_height = wr.bottom - wr.top - cr.bottom + cr.top +offset_height*2;
 
-       if (win_width != font_width*cols + offset_width*2 ||
-           win_height != font_height*rows + offset_height*2) {
+       if (win_width != font_width*term->cols + offset_width*2 ||
+           win_height != font_height*term->rows + offset_height*2) {
 
            /* If this is too large windows will resize it to the maximum
             * allowed window size, we will then be back in here and resize
             * the font or terminal to fit.
             */
            SetWindowPos(hwnd, NULL, 0, 0, 
-                        font_width*cols + extra_width, 
-                        font_height*rows + extra_height,
+                        font_width*term->cols + extra_width, 
+                        font_height*term->rows + extra_height,
                         SWP_NOMOVE | SWP_NOZORDER);
        }
 
@@ -1355,24 +1444,27 @@ static void reset_window(int reinit) {
        extra_width = wr.right - wr.left - cr.right + cr.left + offset_width*2;
        extra_height = wr.bottom - wr.top - cr.bottom + cr.top +offset_height*2;
 
-       if (win_width != font_width*cols + offset_width*2 ||
-           win_height != font_height*rows + offset_height*2) {
+       if (win_width != font_width*term->cols + offset_width*2 ||
+           win_height != font_height*term->rows + offset_height*2) {
 
            static RECT ss;
            int width, height;
+               
+               get_fullscreen_rect(&ss);
 
-           GetClientRect(GetDesktopWindow(), &ss);
            width = (ss.right - ss.left - extra_width) / font_width;
            height = (ss.bottom - ss.top - extra_height) / font_height;
 
            /* Grrr too big */
-           if ( rows > height || cols > width ) {
+           if ( term->rows > height || term->cols > width ) {
                if (cfg.resize_action == RESIZE_EITHER) {
                    /* Make the font the biggest we can */
-                   if (cols > width)
-                       font_width = (ss.right - ss.left - extra_width)/cols;
-                   if (rows > height)
-                       font_height = (ss.bottom - ss.top - extra_height)/rows;
+                   if (term->cols > width)
+                       font_width = (ss.right - ss.left - extra_width)
+                           / term->cols;
+                   if (term->rows > height)
+                       font_height = (ss.bottom - ss.top - extra_height)
+                           / term->rows;
 
                    deinit_fonts();
                    init_fonts(font_width, font_height);
@@ -1380,9 +1472,9 @@ static void reset_window(int reinit) {
                    width = (ss.right - ss.left - extra_width) / font_width;
                    height = (ss.bottom - ss.top - extra_height) / font_height;
                } else {
-                   if ( height > rows ) height = rows;
-                   if ( width > cols )  width = cols;
-                   term_size(height, width, cfg.savelines);
+                   if ( height > term->rows ) height = term->rows;
+                   if ( width > term->cols )  width = term->cols;
+                   term_size(term, height, width, cfg.savelines);
 #ifdef RDB_DEBUG_PATCH
                    debug((27, "reset_window() -> term resize to (%d,%d)",
                               height, width));
@@ -1391,15 +1483,15 @@ static void reset_window(int reinit) {
            }
            
            SetWindowPos(hwnd, NULL, 0, 0, 
-                        font_width*cols + extra_width, 
-                        font_height*rows + extra_height,
+                        font_width*term->cols + extra_width, 
+                        font_height*term->rows + extra_height,
                         SWP_NOMOVE | SWP_NOZORDER);
 
            InvalidateRect(hwnd, NULL, TRUE);
 #ifdef RDB_DEBUG_PATCH
            debug((27, "reset_window() -> window resize to (%d,%d)",
-                       font_width*cols + extra_width,
-                       font_height*rows + extra_height));
+                       font_width*term->cols + extra_width,
+                       font_height*term->rows + extra_height));
 #endif
        }
        return;
@@ -1407,14 +1499,14 @@ static void reset_window(int reinit) {
 
     /* We're allowed to or must change the font but do we want to ?  */
 
-    if (font_width != (win_width-cfg.window_border*2)/cols || 
-       font_height != (win_height-cfg.window_border*2)/rows) {
+    if (font_width != (win_width-cfg.window_border*2)/term->cols || 
+       font_height != (win_height-cfg.window_border*2)/term->rows) {
 
        deinit_fonts();
-       init_fonts((win_width-cfg.window_border*2)/cols, 
-                  (win_height-cfg.window_border*2)/rows);
-       offset_width = (win_width-font_width*cols)/2;
-       offset_height = (win_height-font_height*rows)/2;
+       init_fonts((win_width-cfg.window_border*2)/term->cols, 
+                  (win_height-cfg.window_border*2)/term->rows);
+       offset_width = (win_width-font_width*term->cols)/2;
+       offset_height = (win_height-font_height*term->rows)/2;
 
        extra_width = wr.right - wr.left - cr.right + cr.left +offset_width*2;
        extra_height = wr.bottom - wr.top - cr.bottom + cr.top+offset_height*2;
@@ -1443,7 +1535,7 @@ static void click(Mouse_Button b, int x, int y, int shift, int ctrl, int alt)
 
     if (send_raw_mouse && !(cfg.mouse_override && shift)) {
        lastbtn = MBT_NOTHING;
-       term_mouse(b, MA_CLICK, x, y, shift, ctrl, alt);
+       term_mouse(term, b, MA_CLICK, x, y, shift, ctrl, alt);
        return;
     }
 
@@ -1456,7 +1548,7 @@ static void click(Mouse_Button b, int x, int y, int shift, int ctrl, int alt)
        lastact = MA_CLICK;
     }
     if (lastact != MA_NOTHING)
-       term_mouse(b, lastact, x, y, shift, ctrl, alt);
+       term_mouse(term, b, lastact, x, y, shift, ctrl, alt);
     lasttime = thistime;
 }
 
@@ -1464,7 +1556,7 @@ static void click(Mouse_Button b, int x, int y, int shift, int ctrl, int alt)
  * Translate a raw mouse button designation (LEFT, MIDDLE, RIGHT)
  * into a cooked one (SELECT, EXTEND, PASTE).
  */
-Mouse_Button translate_button(Mouse_Button button)
+Mouse_Button translate_button(void *frontend, Mouse_Button button)
 {
     if (button == MBT_LEFT)
        return MBT_SELECT;
@@ -1500,6 +1592,17 @@ static int is_alt_pressed(void)
     return FALSE;
 }
 
+static int is_shift_pressed(void)
+{
+    BYTE keystate[256];
+    int r = GetKeyboardState(keystate);
+    if (!r)
+       return FALSE;
+    if (keystate[VK_SHIFT] & 0x80)
+       return TRUE;
+    return FALSE;
+}
+
 static int resizing;
 
 static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
@@ -1514,16 +1617,18 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
       case WM_TIMER:
        if (pending_netevent)
            enact_pending_netevent();
-       term_out();
+       if (GetCapture() != hwnd || 
+           (send_raw_mouse && !(cfg.mouse_override && is_shift_pressed())))
+           term_out(term);
        noise_regular();
        HideCaret(hwnd);
-       term_update();
+       term_update(term);
        ShowCaret(hwnd);
        if (cfg.ping_interval > 0) {
            time_t now;
            time(&now);
            if (now - last_movement > cfg.ping_interval) {
-               back->special(TS_PING);
+               back->special(backhandle, TS_PING);
                last_movement = now;
            }
        }
@@ -1647,8 +1752,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 
                if (strcmp(prev_cfg.logfilename, cfg.logfilename) ||
                    prev_cfg.logtype != cfg.logtype) {
-                   logfclose();       /* reset logging */
-                   logfopen();
+                   logfclose(logctx); /* reset logging */
+                   logfopen(logctx);
                }
 
                sfree(logpal);
@@ -1656,7 +1761,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                 * Flush the line discipline's edit buffer in the
                 * case where local editing has just been disabled.
                 */
-               ldisc_send(NULL, 0, 0);
+               ldisc_send(ldisc, NULL, 0, 0);
                if (pal)
                    DeleteObject(pal);
                logpal = NULL;
@@ -1664,6 +1769,9 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                cfgtopalette();
                init_palette();
 
+               /* Give terminal a heads-up on miscellaneous stuff */
+               term_reconfig(term);
+
                /* Screen size changed ? */
                if (cfg.height != prev_cfg.height ||
                    cfg.width != prev_cfg.width ||
@@ -1671,7 +1779,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                    cfg.resize_action == RESIZE_FONT ||
                    (cfg.resize_action == RESIZE_EITHER && IsZoomed(hwnd)) ||
                    cfg.resize_action == RESIZE_DISABLED)
-                   term_size(cfg.height, cfg.width, cfg.savelines);
+                   term_size(term, cfg.height, cfg.width, cfg.savelines);
 
                /* Enable or disable the scroll bar, etc */
                {
@@ -1735,7 +1843,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                    init_lvl = 2;
                }
 
-               set_title(cfg.wintitle);
+               set_title(NULL, cfg.wintitle);
                if (IsIconic(hwnd)) {
                    SetWindowText(hwnd,
                                  cfg.win_name_always ? window_name :
@@ -1760,64 +1868,65 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            }
            break;
          case IDM_COPYALL:
-           term_copyall();
+           term_copyall(term);
            break;
          case IDM_CLRSB:
-           term_clrsb();
+           term_clrsb(term);
            break;
          case IDM_RESET:
-           term_pwron();
+           term_pwron(term);
+           ldisc_send(ldisc, NULL, 0, 0);
            break;
          case IDM_TEL_AYT:
-           back->special(TS_AYT);
+           back->special(backhandle, TS_AYT);
            net_pending_errors();
            break;
          case IDM_TEL_BRK:
-           back->special(TS_BRK);
+           back->special(backhandle, TS_BRK);
            net_pending_errors();
            break;
          case IDM_TEL_SYNCH:
-           back->special(TS_SYNCH);
+           back->special(backhandle, TS_SYNCH);
            net_pending_errors();
            break;
          case IDM_TEL_EC:
-           back->special(TS_EC);
+           back->special(backhandle, TS_EC);
            net_pending_errors();
            break;
          case IDM_TEL_EL:
-           back->special(TS_EL);
+           back->special(backhandle, TS_EL);
            net_pending_errors();
            break;
          case IDM_TEL_GA:
-           back->special(TS_GA);
+           back->special(backhandle, TS_GA);
            net_pending_errors();
            break;
          case IDM_TEL_NOP:
-           back->special(TS_NOP);
+           back->special(backhandle, TS_NOP);
            net_pending_errors();
            break;
          case IDM_TEL_ABORT:
-           back->special(TS_ABORT);
+           back->special(backhandle, TS_ABORT);
            net_pending_errors();
            break;
          case IDM_TEL_AO:
-           back->special(TS_AO);
+           back->special(backhandle, TS_AO);
            net_pending_errors();
            break;
          case IDM_TEL_IP:
-           back->special(TS_IP);
+           back->special(backhandle, TS_IP);
            net_pending_errors();
            break;
          case IDM_TEL_SUSP:
-           back->special(TS_SUSP);
+           back->special(backhandle, TS_SUSP);
            net_pending_errors();
            break;
          case IDM_TEL_EOR:
-           back->special(TS_EOR);
+           back->special(backhandle, TS_EOR);
            net_pending_errors();
            break;
          case IDM_TEL_EOF:
-           back->special(TS_EOF);
+           back->special(backhandle, TS_EOF);
            net_pending_errors();
            break;
          case IDM_ABOUT:
@@ -1918,7 +2027,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                      is_alt_pressed());
                SetCapture(hwnd);
            } else {
-               term_mouse(button, MA_RELEASE,
+               term_mouse(term, button, MA_RELEASE,
                           TO_CHR_X(X_POS(lParam)),
                           TO_CHR_Y(Y_POS(lParam)), wParam & MK_SHIFT,
                           wParam & MK_CONTROL, is_alt_pressed());
@@ -1934,7 +2043,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
         */
        noise_ultralight(lParam);
 
-       if (wParam & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)) {
+       if (wParam & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON) &&
+           GetCapture() == hwnd) {
            Mouse_Button b;
            if (wParam & MK_LBUTTON)
                b = MBT_LEFT;
@@ -1942,7 +2052,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                b = MBT_MIDDLE;
            else
                b = MBT_RIGHT;
-           term_mouse(b, MA_DRAG, TO_CHR_X(X_POS(lParam)),
+           term_mouse(term, b, MA_DRAG, TO_CHR_X(X_POS(lParam)),
                       TO_CHR_Y(Y_POS(lParam)), wParam & MK_SHIFT,
                       wParam & MK_CONTROL, is_alt_pressed());
        }
@@ -1956,7 +2066,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
        break;
       case WM_DESTROYCLIPBOARD:
        if (!ignore_clip)
-           term_deselect();
+           term_deselect(term);
        ignore_clip = FALSE;
        return 0;
       case WM_PAINT:
@@ -1968,7 +2078,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                SelectPalette(hdc, pal, TRUE);
                RealizePalette(hdc);
            }
-           term_paint(hdc, 
+           term_paint(term, hdc, 
                       (p.rcPaint.left-offset_width)/font_width,
                       (p.rcPaint.top-offset_height)/font_height,
                       (p.rcPaint.right-offset_width-1)/font_width,
@@ -1977,8 +2087,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            if (p.fErase ||
                p.rcPaint.left  < offset_width  ||
                p.rcPaint.top   < offset_height ||
-               p.rcPaint.right >= offset_width + font_width*cols ||
-               p.rcPaint.bottom>= offset_height + font_height*rows)
+               p.rcPaint.right >= offset_width + font_width*term->cols ||
+               p.rcPaint.bottom>= offset_height + font_height*term->rows)
            {
                HBRUSH fillcolour, oldbrush;
                HPEN   edge, oldpen;
@@ -1989,10 +2099,21 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                                    colours[(ATTR_DEFBG>>ATTR_BGSHIFT)*2]);
                oldpen = SelectObject(hdc, edge);
 
+               /*
+                * Jordan Russell reports that this apparently
+                * ineffectual IntersectClipRect() call masks a
+                * Windows NT/2K bug causing strange display
+                * problems when the PuTTY window is taller than
+                * the primary monitor. It seems harmless enough...
+                */
+               IntersectClipRect(hdc,
+                       p.rcPaint.left, p.rcPaint.top,
+                       p.rcPaint.right, p.rcPaint.bottom);
+
                ExcludeClipRect(hdc, 
                        offset_width, offset_height,
-                       offset_width+font_width*cols,
-                       offset_height+font_height*rows);
+                       offset_width+font_width*term->cols,
+                       offset_height+font_height*term->rows);
 
                Rectangle(hdc, p.rcPaint.left, p.rcPaint.top, 
                          p.rcPaint.right, p.rcPaint.bottom);
@@ -2027,20 +2148,21 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
        time(&last_movement);
        return 0;
       case WM_SETFOCUS:
-       has_focus = TRUE;
+       term->has_focus = TRUE;
        CreateCaret(hwnd, caretbm, font_width, font_height);
        ShowCaret(hwnd);
        flash_window(0);               /* stop */
        compose_state = 0;
-       term_out();
-       term_update();
+       term_out(term);
+       term_update(term);
        break;
       case WM_KILLFOCUS:
        show_mouseptr(1);
-       has_focus = FALSE;
+       term->has_focus = FALSE;
        DestroyCaret();
-       term_out();
-       term_update();
+       caret_x = caret_y = -1;        /* ensure caret is replaced next time */
+       term_out(term);
+       term_update(term);
        break;
       case WM_ENTERSIZEMOVE:
 #ifdef RDB_DEBUG_PATCH
@@ -2057,7 +2179,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
        debug((27, "WM_EXITSIZEMOVE"));
 #endif
        if (need_backend_resize) {
-           term_size(cfg.height, cfg.width, cfg.savelines);
+           term_size(term, cfg.height, cfg.width, cfg.savelines);
            InvalidateRect(hwnd, NULL, TRUE);
        }
        break;
@@ -2072,7 +2194,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            LPRECT r = (LPRECT) lParam;
 
            if ( !need_backend_resize && cfg.resize_action == RESIZE_EITHER &&
-                   (cfg.height != rows || cfg.width != cols )) {
+                   (cfg.height != term->rows || cfg.width != term->cols )) {
                /* 
                 * Great! It seems that both the terminal size and the
                 * font size have been changed and the user is now dragging.
@@ -2082,10 +2204,10 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                 *
                 * This would be easier but it seems to be too confusing.
 
-               term_size(cfg.height, cfg.width, cfg.savelines);
+               term_size(term, cfg.height, cfg.width, cfg.savelines);
                reset_window(2);
                 */
-               cfg.height=rows; cfg.width=cols;
+               cfg.height=term->rows; cfg.width=term->cols;
 
                InvalidateRect(hwnd, NULL, TRUE);
                need_backend_resize = TRUE;
@@ -2129,25 +2251,25 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            width = r->right - r->left - ex_width;
            height = r->bottom - r->top - ex_height;
 
-           w = (width + cols/2)/cols;
-           h = (height + rows/2)/rows;
-           if ( r->right != r->left + w*cols + ex_width) 
+           w = (width + term->cols/2)/term->cols;
+           h = (height + term->rows/2)/term->rows;
+           if ( r->right != r->left + w*term->cols + ex_width)
                rv = 1;
 
            if (wParam == WMSZ_LEFT ||
                wParam == WMSZ_BOTTOMLEFT || wParam == WMSZ_TOPLEFT)
-               r->left = r->right - w*cols - ex_width;
+               r->left = r->right - w*term->cols - ex_width;
            else
-               r->right = r->left + w*cols + ex_width;
+               r->right = r->left + w*term->cols + ex_width;
 
-           if (r->bottom != r->top + h*rows + ex_height)
+           if (r->bottom != r->top + h*term->rows + ex_height)
                rv = 1;
 
            if (wParam == WMSZ_TOP ||
                wParam == WMSZ_TOPRIGHT || wParam == WMSZ_TOPLEFT)
-               r->top = r->bottom - h*rows - ex_height;
+               r->top = r->bottom - h*term->rows - ex_height;
            else
-               r->bottom = r->top + h*rows + ex_height;
+               r->bottom = r->top + h*term->rows + ex_height;
 
            return rv;
        }
@@ -2155,6 +2277,9 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
       case WM_FULLSCR_ON_MAX:
        fullscr_on_max = TRUE;
        break;
+      case WM_MOVE:
+       sys_cursor_update();
+       break;
       case WM_SIZE:
 #ifdef RDB_DEBUG_PATCH
        debug((27, "WM_SIZE %s (%d,%d)",
@@ -2173,8 +2298,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
         if (wParam == SIZE_RESTORED)
             clear_full_screen();
         if (wParam == SIZE_MAXIMIZED && fullscr_on_max) {
-            make_full_screen();
             fullscr_on_max = FALSE;
+            make_full_screen();
         }
 
        if (cfg.resize_action == RESIZE_DISABLED) {
@@ -2190,21 +2315,21 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            if (!resizing) {
                if (wParam == SIZE_MAXIMIZED && !was_zoomed) {
                    was_zoomed = 1;
-                   prev_rows = rows;
-                   prev_cols = cols;
+                   prev_rows = term->rows;
+                   prev_cols = term->cols;
                    if (cfg.resize_action == RESIZE_TERM) {
                        w = width / font_width;
                        if (w < 1) w = 1;
                        h = height / font_height;
                        if (h < 1) h = 1;
 
-                       term_size(h, w, cfg.savelines);
+                       term_size(term, h, w, cfg.savelines);
                    }
                    reset_window(0);
                } else if (wParam == SIZE_RESTORED && was_zoomed) {
                    was_zoomed = 0;
                    if (cfg.resize_action == RESIZE_TERM)
-                       term_size(prev_rows, prev_cols, cfg.savelines);
+                       term_size(term, prev_rows, prev_cols, cfg.savelines);
                    if (cfg.resize_action != RESIZE_FONT)
                        reset_window(2);
                    else
@@ -2238,36 +2363,37 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                    reset_window(0);
            }
        }
+       sys_cursor_update();
        return 0;
       case WM_VSCROLL:
        switch (LOWORD(wParam)) {
          case SB_BOTTOM:
-           term_scroll(-1, 0);
+           term_scroll(term, -1, 0);
            break;
          case SB_TOP:
-           term_scroll(+1, 0);
+           term_scroll(term, +1, 0);
            break;
          case SB_LINEDOWN:
-           term_scroll(0, +1);
+           term_scroll(term, 0, +1);
            break;
          case SB_LINEUP:
-           term_scroll(0, -1);
+           term_scroll(term, 0, -1);
            break;
          case SB_PAGEDOWN:
-           term_scroll(0, +rows / 2);
+           term_scroll(term, 0, +term->rows / 2);
            break;
          case SB_PAGEUP:
-           term_scroll(0, -rows / 2);
+           term_scroll(term, 0, -term->rows / 2);
            break;
          case SB_THUMBPOSITION:
          case SB_THUMBTRACK:
-           term_scroll(1, HIWORD(wParam));
+           term_scroll(term, 1, HIWORD(wParam));
            break;
        }
        break;
       case WM_PALETTECHANGED:
        if ((HWND) wParam != hwnd && pal != NULL) {
-           HDC hdc = get_ctx();
+           HDC hdc = get_ctx(NULL);
            if (hdc) {
                if (RealizePalette(hdc) > 0)
                    UpdateColors(hdc);
@@ -2277,7 +2403,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
        break;
       case WM_QUERYNEWPALETTE:
        if (pal != NULL) {
-           HDC hdc = get_ctx();
+           HDC hdc = get_ctx(NULL);
            if (hdc) {
                if (RealizePalette(hdc) > 0)
                    UpdateColors(hdc);
@@ -2326,7 +2452,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                     * preferable to having to faff about buffering
                     * things.
                     */
-                   term_nopaste();
+                   term_nopaste(term);
 
                    /*
                     * We need not bother about stdin backlogs
@@ -2336,7 +2462,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                     * messages. We _have_ to buffer everything
                     * we're sent.
                     */
-                   ldisc_send(buf, len, 1);
+                   term_seen_key_event(term);
+                   ldisc_send(ldisc, buf, len, 1);
                    show_mouseptr(0);
                }
            }
@@ -2347,6 +2474,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
        /* wParam == Font number */
        /* lParam == Locale */
        set_input_locale((HKL)lParam);
+       sys_cursor_update();
        break;
       case WM_IME_NOTIFY:
        if(wParam == IMN_SETOPENSTATUS) {
@@ -2381,8 +2509,10 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                 * luni_send() covering the whole of buff. So
                 * instead we luni_send the characters one by one.
                 */
-               for (i = 0; i < n; i += 2)
-                   luni_send((unsigned short *)(buff+i), 1, 1);
+               term_seen_key_event(term);
+               for (i = 0; i < n; i += 2) {
+                   luni_send(ldisc, (unsigned short *)(buff+i), 1, 1);
+               }
                free(buff);
            }
            ImmReleaseContext(hwnd, hIMC);
@@ -2395,10 +2525,12 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 
            buf[1] = wParam;
            buf[0] = wParam >> 8;
-           lpage_send(kbd_codepage, buf, 2, 1);
+           term_seen_key_event(term);
+           lpage_send(ldisc, kbd_codepage, buf, 2, 1);
        } else {
            char c = (unsigned char) wParam;
-           lpage_send(kbd_codepage, &c, 1, 1);
+           term_seen_key_event(term);
+           lpage_send(ldisc, kbd_codepage, &c, 1, 1);
        }
        return (0);
       case WM_CHAR:
@@ -2411,7 +2543,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
         */
        {
            char c = (unsigned char)wParam;
-           lpage_send(CP_ACP, &c, 1, 1);
+           term_seen_key_event(term);
+           lpage_send(ldisc, CP_ACP, &c, 1, 1);
        }
        return 0;
       case WM_SETCURSOR:
@@ -2420,7 +2553,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
            return TRUE;
        }
       default:
-       if (message == wm_mousewheel) {
+       if (message == wm_mousewheel || message == WM_MOUSEWHEEL) {
            int shift_pressed=0, control_pressed=0, alt_pressed=0;
 
            if (message == WM_MOUSEWHEEL) {
@@ -2453,18 +2586,19 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
                if (send_raw_mouse &&
                    !(cfg.mouse_override && shift_pressed)) {
                    /* send a mouse-down followed by a mouse up */
-                   term_mouse(b,
+                   term_mouse(term, b,
                               MA_CLICK,
                               TO_CHR_X(X_POS(lParam)),
                               TO_CHR_Y(Y_POS(lParam)), shift_pressed,
                               control_pressed, is_alt_pressed());
-                   term_mouse(b, MA_RELEASE, TO_CHR_X(X_POS(lParam)),
+                   term_mouse(term, b, MA_RELEASE, TO_CHR_X(X_POS(lParam)),
                               TO_CHR_Y(Y_POS(lParam)), shift_pressed,
                               control_pressed, is_alt_pressed());
                } else {
                    /* trigger a scroll */
-                   term_scroll(0,
-                               b == MBT_WHEEL_UP ? -rows / 2 : rows / 2);
+                   term_scroll(term, 0,
+                               b == MBT_WHEEL_UP ?
+                               -term->rows / 2 : term->rows / 2);
                }
            }
            return 0;
@@ -2480,15 +2614,37 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
  * helper software tracks the system caret, so we should arrange to
  * have one.)
  */
-void sys_cursor(int x, int y)
+void sys_cursor(void *frontend, int x, int y)
+{
+    int cx, cy;
+
+    if (!term->has_focus) return;
+
+    /*
+     * Avoid gratuitously re-updating the cursor position and IMM
+     * window if there's no actual change required.
+     */
+    cx = x * font_width + offset_width;
+    cy = y * font_height + offset_height;
+    if (cx == caret_x && cy == caret_y)
+       return;
+    caret_x = cx;
+    caret_y = cy;
+
+    sys_cursor_update();
+}
+
+static void sys_cursor_update(void)
 {
     COMPOSITIONFORM cf;
     HIMC hIMC;
 
-    if (!has_focus) return;
-    
-    SetCaretPos(x * font_width + offset_width,
-               y * font_height + offset_height);
+    if (!term->has_focus) return;
+
+    if (caret_x < 0 || caret_y < 0)
+       return;
+
+    SetCaretPos(caret_x, caret_y);
 
     /* IMM calls on Win98 and beyond only */
     if(osVersion.dwPlatformId == VER_PLATFORM_WIN32s) return; /* 3.11 */
@@ -2499,8 +2655,8 @@ void sys_cursor(int x, int y)
     /* we should have the IMM functions */
     hIMC = ImmGetContext(hwnd);
     cf.dwStyle = CFS_POINT;
-    cf.ptCurrentPos.x = x * font_width + offset_width;
-    cf.ptCurrentPos.y = y * font_height + offset_height;
+    cf.ptCurrentPos.x = caret_x;
+    cf.ptCurrentPos.y = caret_y;
     ImmSetCompositionWindow(hIMC, &cf);
 
     ImmReleaseContext(hwnd, hIMC);
@@ -2540,7 +2696,7 @@ void do_text(Context ctx, int x, int y, char *text, int len,
     }
 
     /* Only want the left half of double width lines */
-    if (lattr != LATTR_NORM && x*2 >= cols)
+    if (lattr != LATTR_NORM && x*2 >= term->cols)
        return;
 
     x *= fnt_width;
@@ -2548,7 +2704,7 @@ void do_text(Context ctx, int x, int y, char *text, int len,
     x += offset_width;
     y += offset_height;
 
-    if ((attr & TATTR_ACTCURS) && (cfg.cursor_type == 0 || big_cursor)) {
+    if ((attr & TATTR_ACTCURS) && (cfg.cursor_type == 0 || term->big_cursor)) {
        attr &= ATTR_CUR_AND | (bold_mode != BOLD_COLOURS ? ATTR_BOLD : 0);
        attr ^= ATTR_CUR_XOR;
     }
@@ -2649,8 +2805,8 @@ void do_text(Context ctx, int x, int y, char *text, int len,
     line_box.bottom = y + font_height;
 
     /* Only want the left half of double width lines */
-    if (line_box.right > font_width*cols+offset_width)
-       line_box.right = font_width*cols+offset_width;
+    if (line_box.right > font_width*term->cols+offset_width)
+       line_box.right = font_width*term->cols+offset_width;
 
     /* We're using a private area for direct to font. (512 chars.) */
     if (dbcs_screenfont && (attr & CSET_MASK) == ATTR_ACP) {
@@ -2764,7 +2920,7 @@ void do_cursor(Context ctx, int x, int y, char *text, int len,
     HDC hdc = ctx;
     int ctype = cfg.cursor_type;
 
-    if ((attr & TATTR_ACTCURS) && (ctype == 0 || big_cursor)) {
+    if ((attr & TATTR_ACTCURS) && (ctype == 0 || term->big_cursor)) {
        if (((attr & CSET_MASK) | (unsigned char) *text) != UCSWIDE) {
            do_text(ctx, x, y, text, len, attr, lattr);
            return;
@@ -2781,7 +2937,7 @@ void do_cursor(Context ctx, int x, int y, char *text, int len,
     x += offset_width;
     y += offset_height;
 
-    if ((attr & TATTR_PASCURS) && (ctype == 0 || big_cursor)) {
+    if ((attr & TATTR_PASCURS) && (ctype == 0 || term->big_cursor)) {
        POINT pts[5];
        HPEN oldpen;
        pts[0].x = pts[1].x = pts[4].x = x;
@@ -2997,7 +3153,8 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 
        /* Nastyness with NUMLock - Shift-NUMLock is left alone though */
        if ((cfg.funky_type == 3 ||
-            (cfg.funky_type <= 1 && app_keypad_keys && !cfg.no_applic_k))
+            (cfg.funky_type <= 1 && term->app_keypad_keys &&
+             !cfg.no_applic_k))
            && wParam == VK_NUMLOCK && !(keystate[VK_SHIFT] & 0x80)) {
 
            wParam = VK_EXECUTE;
@@ -3012,7 +3169,8 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
     }
 
     /* Disable Auto repeat if required */
-    if (repeat_off && (HIWORD(lParam) & (KF_UP | KF_REPEAT)) == KF_REPEAT)
+    if (term->repeat_off &&
+       (HIWORD(lParam) & (KF_UP | KF_REPEAT)) == KF_REPEAT)
        return 0;
 
     if ((HIWORD(lParam) & KF_ALTDOWN) && (keystate[VK_RMENU] & 0x80) == 0)
@@ -3058,20 +3216,11 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
     } else if (compose_state == 1 && wParam != VK_CONTROL)
        compose_state = 0;
 
-    /* 
-     * Record that we pressed key so the scroll window can be reset, but
-     * be careful to avoid Shift-UP/Down
-     */
-    if (wParam != VK_SHIFT && wParam != VK_PRIOR && wParam != VK_NEXT &&
-       wParam != VK_MENU && wParam != VK_CONTROL) {
-       seen_key_event = 1;
-    }
-
     if (compose_state > 1 && left_alt)
        compose_state = 0;
 
     /* Sanitize the number pad if not using a PC NumPad */
-    if (left_alt || (app_keypad_keys && !cfg.no_applic_k
+    if (left_alt || (term->app_keypad_keys && !cfg.no_applic_k
                     && cfg.funky_type != 2)
        || cfg.funky_type == 3 || cfg.nethack_keypad || compose_state) {
        if ((HIWORD(lParam) & KF_EXTENDED) == 0) {
@@ -3135,7 +3284,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
            return 0;
        }
        if (wParam == VK_INSERT && shift_state == 1) {
-           term_do_paste();
+           term_do_paste(term);
            return 0;
        }
        if (left_alt && wParam == VK_F4 && cfg.alt_f4) {
@@ -3153,7 +3302,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
        }
        /* Control-Numlock for app-keypad mode switch */
        if (wParam == VK_PAUSE && shift_state == 2) {
-           app_keypad_keys ^= 1;
+           term->app_keypad_keys ^= 1;
            return 0;
        }
 
@@ -3196,7 +3345,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 
            if (cfg.funky_type == 3 ||
                (cfg.funky_type <= 1 &&
-                app_keypad_keys && !cfg.no_applic_k)) switch (wParam) {
+                term->app_keypad_keys && !cfg.no_applic_k)) switch (wParam) {
                  case VK_EXECUTE:
                    xkey = 'P';
                    break;
@@ -3210,7 +3359,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
                    xkey = 'S';
                    break;
                }
-           if (app_keypad_keys && !cfg.no_applic_k)
+           if (term->app_keypad_keys && !cfg.no_applic_k)
                switch (wParam) {
                  case VK_NUMPAD0:
                    xkey = 'p';
@@ -3277,7 +3426,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
                    break;
                }
            if (xkey) {
-               if (vt52_mode) {
+               if (term->vt52_mode) {
                    if (xkey >= 'P' && xkey <= 'S')
                        p += sprintf((char *) p, "\x1B%c", xkey);
                    else
@@ -3293,6 +3442,12 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
            *p++ = 0;
            return -2;
        }
+       if (wParam == VK_BACK && shift_state == 1) {    /* Shift Backspace */
+           /* We do the opposite of what is configured */
+           *p++ = (cfg.bksp_is_delete ? 0x08 : 0x7F);
+           *p++ = 0;
+           return -2;
+       }
        if (wParam == VK_TAB && shift_state == 1) {     /* Shift tab */
            *p++ = 0x1B;
            *p++ = '[';
@@ -3330,7 +3485,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
            *p++ = 0x1C;
            return p - output;
        }
-       if (shift_state == 0 && wParam == VK_RETURN && cr_lf_return) {
+       if (shift_state == 0 && wParam == VK_RETURN && term->cr_lf_return) {
            *p++ = '\r';
            *p++ = '\n';
            return p - output;
@@ -3432,7 +3587,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
        if (cfg.funky_type == 3 && code <= 6)
            code = "\0\2\1\4\5\3\6"[code];
 
-       if (vt52_mode && code > 0 && code <= 6) {
+       if (term->vt52_mode && code > 0 && code <= 6) {
            p += sprintf((char *) p, "\x1B%c", " HLMEIG"[code]);
            return p - output;
        }
@@ -3470,13 +3625,13 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
            }
            return p - output;
        }
-       if ((vt52_mode || cfg.funky_type == 4) && code >= 11 && code <= 24) {
+       if ((term->vt52_mode || cfg.funky_type == 4) && code >= 11 && code <= 24) {
            int offt = 0;
            if (code > 15)
                offt++;
            if (code > 21)
                offt++;
-           if (vt52_mode)
+           if (term->vt52_mode)
                p += sprintf((char *) p, "\x1B%c", code + 'P' - 11 - offt);
            else
                p +=
@@ -3488,7 +3643,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
            return p - output;
        }
        if (cfg.funky_type == 2 && code >= 11 && code <= 14) {
-           if (vt52_mode)
+           if (term->vt52_mode)
                p += sprintf((char *) p, "\x1B%c", code + 'P' - 11);
            else
                p += sprintf((char *) p, "\x1BO%c", code + 'P' - 11);
@@ -3527,10 +3682,10 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
                break;
            }
            if (xkey) {
-               if (vt52_mode)
+               if (term->vt52_mode)
                    p += sprintf((char *) p, "\x1B%c", xkey);
                else {
-                   int app_flg = (app_cursor_keys && !cfg.no_applic_c);
+                   int app_flg = (term->app_cursor_keys && !cfg.no_applic_c);
 #if 0
                    /*
                     * RDB: VT100 & VT102 manuals both state the
@@ -3546,7 +3701,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
                     * _this_ I'll have to put in a configurable
                     * option.
                     */
-                   if (!app_keypad_keys)
+                   if (!term->app_keypad_keys)
                        app_flg = 0;
 #endif
                    /* Useful mapping of Ctrl-arrows */
@@ -3593,7 +3748,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 #ifdef SHOW_TOASCII_RESULT
        if (r == 1 && !key_down) {
            if (alt_sum) {
-               if (in_utf || dbcs_screenfont)
+               if (in_utf(term) || dbcs_screenfont)
                    debug((", (U+%04x)", alt_sum));
                else
                    debug((", LCH(%d)", alt_sum));
@@ -3617,7 +3772,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
             * sensible, but for the moment it's preferable to
             * having to faff about buffering things.
             */
-           term_nopaste();
+           term_nopaste(term);
 
            p = output;
            for (i = 0; i < r; i++) {
@@ -3637,7 +3792,8 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
                        return 0;
                    }
                    keybuf = nc;
-                   luni_send(&keybuf, 1, 1);
+                   term_seen_key_event(term);
+                   luni_send(ldisc, &keybuf, 1, 1);
                    continue;
                }
 
@@ -3645,9 +3801,10 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 
                if (!key_down) {
                    if (alt_sum) {
-                       if (in_utf || dbcs_screenfont) {
+                       if (in_utf(term) || dbcs_screenfont) {
                            keybuf = alt_sum;
-                           luni_send(&keybuf, 1, 1);
+                           term_seen_key_event(term);
+                           luni_send(ldisc, &keybuf, 1, 1);
                        } else {
                            ch = (char) alt_sum;
                            /*
@@ -3659,22 +3816,27 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
                             * messages. We _have_ to buffer
                             * everything we're sent.
                             */
-                           ldisc_send(&ch, 1, 1);
+                           term_seen_key_event(term);
+                           ldisc_send(ldisc, &ch, 1, 1);
                        }
                        alt_sum = 0;
                    } else
-                       lpage_send(kbd_codepage, &ch, 1, 1);
+                       term_seen_key_event(term);
+                       lpage_send(ldisc, kbd_codepage, &ch, 1, 1);
                } else {
                    if(capsOn && ch < 0x80) {
                        WCHAR cbuf[2];
                        cbuf[0] = 27;
                        cbuf[1] = xlat_uskbd2cyrllic(ch);
-                       luni_send(cbuf+!left_alt, 1+!!left_alt, 1);
+                       term_seen_key_event(term);
+                       luni_send(ldisc, cbuf+!left_alt, 1+!!left_alt, 1);
                    } else {
                        char cbuf[2];
                        cbuf[0] = '\033';
                        cbuf[1] = ch;
-                       lpage_send(kbd_codepage, cbuf+!left_alt, 1+!!left_alt, 1);
+                       term_seen_key_event(term);
+                       lpage_send(ldisc, kbd_codepage,
+                                  cbuf+!left_alt, 1+!!left_alt, 1);
                    }
                }
                show_mouseptr(0);
@@ -3689,7 +3851,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
        if (!left_alt)
            keys[0] = 0;
        /* If we will be using alt_sum fix the 256s */
-       else if (keys[0] && (in_utf || dbcs_screenfont))
+       else if (keys[0] && (in_utf(term) || dbcs_screenfont))
            keys[0] = 10;
     }
 
@@ -3706,7 +3868,17 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
     return -1;
 }
 
-void set_title(char *title)
+void request_paste(void *frontend)
+{
+    /*
+     * In Windows, pasting is synchronous: we can read the
+     * clipboard with no difficulty, so request_paste() can just go
+     * ahead and paste.
+     */
+    term_do_paste(term);
+}
+
+void set_title(void *frontend, char *title)
 {
     sfree(window_name);
     window_name = smalloc(1 + strlen(title));
@@ -3715,7 +3887,7 @@ void set_title(char *title)
        SetWindowText(hwnd, title);
 }
 
-void set_icon(char *title)
+void set_icon(void *frontend, char *title)
 {
     sfree(icon_name);
     icon_name = smalloc(1 + strlen(title));
@@ -3724,7 +3896,7 @@ void set_icon(char *title)
        SetWindowText(hwnd, title);
 }
 
-void set_sbar(int total, int start, int page)
+void set_sbar(void *frontend, int total, int start, int page)
 {
     SCROLLINFO si;
 
@@ -3741,7 +3913,7 @@ void set_sbar(int total, int start, int page)
        SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
 }
 
-Context get_ctx(void)
+Context get_ctx(void *frontend)
 {
     HDC hdc;
     if (hwnd) {
@@ -3772,7 +3944,7 @@ static void real_palette_set(int n, int r, int g, int b)
        colours[n] = RGB(r, g, b);
 }
 
-void palette_set(int n, int r, int g, int b)
+void palette_set(void *frontend, int n, int r, int g, int b)
 {
     static const int first[21] = {
        0, 2, 4, 6, 8, 10, 12, 14,
@@ -3783,14 +3955,14 @@ void palette_set(int n, int r, int g, int b)
     if (first[n] >= 18)
        real_palette_set(first[n] + 1, r, g, b);
     if (pal) {
-       HDC hdc = get_ctx();
+       HDC hdc = get_ctx(frontend);
        UnrealizeObject(pal);
        RealizePalette(hdc);
        free_ctx(hdc);
     }
 }
 
-void palette_reset(void)
+void palette_reset(void *frontend)
 {
     int i;
 
@@ -3811,13 +3983,13 @@ void palette_reset(void)
     if (pal) {
        HDC hdc;
        SetPaletteEntries(pal, 0, NCOLOURS, logpal->palPalEntry);
-       hdc = get_ctx();
+       hdc = get_ctx(frontend);
        RealizePalette(hdc);
        free_ctx(hdc);
     }
 }
 
-void write_aclip(char *data, int len, int must_deselect)
+void write_aclip(void *frontend, char *data, int len, int must_deselect)
 {
     HGLOBAL clipdata;
     void *lock;
@@ -3849,7 +4021,7 @@ void write_aclip(char *data, int len, int must_deselect)
 /*
  * Note: unlike write_aclip() this will not append a nul.
  */
-void write_clip(wchar_t * data, int len, int must_deselect)
+void write_clip(void *frontend, wchar_t * data, int len, int must_deselect)
 {
     HGLOBAL clipdata, clipdata2, clipdata3;
     int len2;
@@ -4012,7 +4184,7 @@ void write_clip(wchar_t * data, int len, int must_deselect)
        SendMessage(hwnd, WM_IGNORE_CLIP, FALSE, 0);
 }
 
-void get_clip(wchar_t ** p, int *len)
+void get_clip(void *frontend, wchar_t ** p, int *len)
 {
     static HGLOBAL clipdata = NULL;
     static wchar_t *converted = 0;
@@ -4059,7 +4231,7 @@ void get_clip(wchar_t ** p, int *len)
  * Move `lines' lines from position `from' to position `to' in the
  * window.
  */
-void optimised_move(int to, int from, int lines)
+void optimised_move(void *frontend, int to, int from, int lines)
 {
     RECT r;
     int min, max;
@@ -4068,7 +4240,7 @@ void optimised_move(int to, int from, int lines)
     max = to + from - min;
 
     r.left = offset_width;
-    r.right = offset_width + cols * font_width;
+    r.right = offset_width + term->cols * font_width;
     r.top = offset_height + min * font_height;
     r.bottom = offset_height + (max + lines) * font_height;
     ScrollWindow(hwnd, 0, (to - from) * font_height, &r, &r);
@@ -4087,7 +4259,23 @@ void fatalbox(char *fmt, ...)
     vsprintf(stuff, fmt, ap);
     va_end(ap);
     MessageBox(hwnd, stuff, "PuTTY Fatal Error", MB_ICONERROR | MB_OK);
-    exit(1);
+    cleanup_exit(1);
+}
+
+/*
+ * Print a modal (Really Bad) message box and perform a fatal exit.
+ */
+void modalfatalbox(char *fmt, ...)
+{
+    va_list ap;
+    char stuff[200];
+
+    va_start(ap, fmt);
+    vsprintf(stuff, fmt, ap);
+    va_end(ap);
+    MessageBox(hwnd, stuff, "PuTTY Fatal Error",
+              MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
+    cleanup_exit(1);
 }
 
 /*
@@ -4129,7 +4317,7 @@ static void flash_window(int mode)
 /*
  * Beep.
  */
-void beep(int mode)
+void beep(void *frontend, int mode)
 {
     if (mode == BELL_DEFAULT) {
        /*
@@ -4161,7 +4349,7 @@ void beep(int mode)
        }
     }
     /* Otherwise, either visual bell or disabled; do nothing here */
-    if (!has_focus) {
+    if (!term->has_focus) {
        flash_window(2);               /* start */
     }
 }
@@ -4170,7 +4358,7 @@ void beep(int mode)
  * Minimise or restore the window in response to a server-side
  * request.
  */
-void set_iconic(int iconic)
+void set_iconic(void *frontend, int iconic)
 {
     if (IsIconic(hwnd)) {
        if (!iconic)
@@ -4184,8 +4372,13 @@ void set_iconic(int iconic)
 /*
  * Move the window in response to a server-side request.
  */
-void move_window(int x, int y)
+void move_window(void *frontend, int x, int y)
 {
+    if (cfg.resize_action == RESIZE_DISABLED || 
+        cfg.resize_action == RESIZE_FONT ||
+       IsZoomed(hwnd))
+       return;
+
     SetWindowPos(hwnd, NULL, x, y, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
 }
 
@@ -4193,7 +4386,7 @@ void move_window(int x, int y)
  * Move the window to the top or bottom of the z-order in response
  * to a server-side request.
  */
-void set_zorder(int top)
+void set_zorder(void *frontend, int top)
 {
     if (cfg.alwaysontop)
        return;                        /* ignore */
@@ -4204,7 +4397,7 @@ void set_zorder(int top)
 /*
  * Refresh the window in response to a server-side request.
  */
-void refresh_window(void)
+void refresh_window(void *frontend)
 {
     InvalidateRect(hwnd, NULL, TRUE);
 }
@@ -4213,7 +4406,7 @@ void refresh_window(void)
  * Maximise or restore the window in response to a server-side
  * request.
  */
-void set_zoomed(int zoomed)
+void set_zoomed(void *frontend, int zoomed)
 {
     if (IsZoomed(hwnd)) {
         if (!zoomed)
@@ -4227,7 +4420,7 @@ void set_zoomed(int zoomed)
 /*
  * Report whether the window is iconic, for terminal reports.
  */
-int is_iconic(void)
+int is_iconic(void *frontend)
 {
     return IsIconic(hwnd);
 }
@@ -4235,7 +4428,7 @@ int is_iconic(void)
 /*
  * Report the window's position, for terminal reports.
  */
-void get_window_pos(int *x, int *y)
+void get_window_pos(void *frontend, int *x, int *y)
 {
     RECT r;
     GetWindowRect(hwnd, &r);
@@ -4246,7 +4439,7 @@ void get_window_pos(int *x, int *y)
 /*
  * Report the window's pixel size, for terminal reports.
  */
-void get_window_pixels(int *x, int *y)
+void get_window_pixels(void *frontend, int *x, int *y)
 {
     RECT r;
     GetWindowRect(hwnd, &r);
@@ -4257,7 +4450,7 @@ void get_window_pixels(int *x, int *y)
 /*
  * Return the window or icon title.
  */
-char *get_window_title(int icon)
+char *get_window_title(void *frontend, int icon)
 {
     return icon ? icon_name : window_name;
 }
@@ -4274,6 +4467,32 @@ int is_full_screen()
     return TRUE;
 }
 
+/* Get the rect/size of a full screen window using the nearest available
+ * monitor in multimon systems; default to something sensible if only
+ * one monitor is present. */
+static int get_fullscreen_rect(RECT * ss)
+{
+#ifdef MONITOR_DEFAULTTONEAREST
+       HMONITOR mon;
+       MONITORINFO mi;
+       mon = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
+       mi.cbSize = sizeof(mi);
+       GetMonitorInfo(mon, &mi);
+
+       /* structure copy */
+       *ss = mi.rcMonitor;
+       return TRUE;
+#else
+/* could also use code like this:
+       ss->left = ss->top = 0;
+       ss->right = GetSystemMetrics(SM_CXSCREEN);
+       ss->bottom = GetSystemMetrics(SM_CYSCREEN);
+*/ 
+       return GetClientRect(GetDesktopWindow(), ss);
+#endif
+}
+
+
 /*
  * Go full-screen. This should only be called when we are already
  * maximised.
@@ -4281,10 +4500,13 @@ int is_full_screen()
 void make_full_screen()
 {
     DWORD style;
-    int x, y, w, h;
+       RECT ss;
 
     assert(IsZoomed(hwnd));
 
+       if (is_full_screen())
+               return;
+       
     /* Remove the window furniture. */
     style = GetWindowLong(hwnd, GWL_STYLE);
     style &= ~(WS_CAPTION | WS_BORDER | WS_THICKFRAME);
@@ -4295,24 +4517,11 @@ void make_full_screen()
     SetWindowLong(hwnd, GWL_STYLE, style);
 
     /* Resize ourselves to exactly cover the nearest monitor. */
-#ifdef MONITOR_DEFAULTTONEAREST
-    {
-       HMONITOR mon;
-       MONITORINFO mi;
-       mon = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
-       mi.cbSize = sizeof(mi);
-       GetMonitorInfo(mon, &mi);
-       x = mi.rcMonitor.left;
-       y = mi.rcMonitor.top;
-       w = mi.rcMonitor.right;
-       h = mi.rcMonitor.bottom;
-    }
-#else
-    x = y = 0;
-    w = GetSystemMetrics(SM_CXSCREEN);
-    h = GetSystemMetrics(SM_CYSCREEN);
-#endif
-    SetWindowPos(hwnd, HWND_TOP, x, y, w, h, SWP_FRAMECHANGED);
+       get_fullscreen_rect(&ss);
+    SetWindowPos(hwnd, HWND_TOP, ss.left, ss.top,
+                       ss.right - ss.left,
+                       ss.bottom - ss.top,
+                       SWP_FRAMECHANGED);
 
     /* Tick the menu item in the System menu. */
     CheckMenuItem(GetSystemMenu(hwnd, FALSE), IDM_FULLSCREEN,
@@ -4363,3 +4572,14 @@ void flip_full_screen()
        ShowWindow(hwnd, SW_MAXIMIZE);
     }
 }
+
+void frontend_keypress(void *handle)
+{
+    /*
+     * Keypress termination in non-Close-On-Exit mode is not
+     * currently supported in PuTTY proper, because the window
+     * always has a perfectly good Close button anyway. So we do
+     * nothing here.
+     */
+    return;
+}