X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/4c472521e531fb420537806e1724c4a7a0041977..971bcc0afc69f7e754285167e88885c8893d0229:/window.c

diff --git a/window.c b/window.c
index 59901010..6d306f56 100644
--- a/window.c
+++ b/window.c
@@ -11,10 +11,12 @@
 #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"
@@ -34,19 +37,6 @@
 #define IDM_RECONF    0x0040
 #define IDM_CLRSB     0x0050
 #define IDM_RESET     0x0060
-#define IDM_TEL_AYT   0x0070
-#define IDM_TEL_BRK   0x0080
-#define IDM_TEL_SYNCH 0x0090
-#define IDM_TEL_EC    0x00a0
-#define IDM_TEL_EL    0x00b0
-#define IDM_TEL_GA    0x00c0
-#define IDM_TEL_NOP   0x00d0
-#define IDM_TEL_ABORT 0x00e0
-#define IDM_TEL_AO    0x00f0
-#define IDM_TEL_IP    0x0100
-#define IDM_TEL_SUSP  0x0110
-#define IDM_TEL_EOR   0x0120
-#define IDM_TEL_EOF   0x0130
 #define IDM_HELP      0x0140
 #define IDM_ABOUT     0x0150
 #define IDM_SAVEDSESS 0x0160
@@ -56,11 +46,16 @@
 #define IDM_SESSLGP   0x0250	       /* log type printable */
 #define IDM_SESSLGA   0x0260	       /* log type all chars */
 #define IDM_SESSLGE   0x0270	       /* log end */
+
+#define IDM_SPECIAL_MIN 0x0400
+#define IDM_SPECIAL_MAX 0x0800
+
 #define IDM_SAVED_MIN 0x1000
 #define IDM_SAVED_MAX 0x2000
 
 #define WM_IGNORE_CLIP (WM_XUSER + 2)
 #define WM_FULLSCR_ON_MAX (WM_XUSER + 3)
+#define WM_AGENT_CALLBACK (WM_XUSER + 4)
 
 /* Needed for Chinese support and apparently not always defined. */
 #ifndef VK_PROCESSKEY
@@ -75,6 +70,7 @@
 #define WHEEL_DELTA 120
 #endif
 
+static Mouse_Button translate_button(Mouse_Button button);
 static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 			unsigned char *output);
@@ -84,7 +80,6 @@ static void init_fonts(int, int);
 static void another_font(int);
 static void deinit_fonts(void);
 static void set_input_locale(HKL);
-static int do_mouse_wheel_msg(UINT message, WPARAM wParam, LPARAM lParam);
 
 static int is_full_screen(void);
 static void make_full_screen(void);
@@ -105,11 +100,36 @@ 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 int kbd_codepage;
+
+static void *ldisc;
+static Backend *back;
+static void *backhandle;
+
+static struct unicode_data ucsdata;
+static int session_closed;
+
+static const struct telnet_special *specials;
+static int specials_menu_position;
+
+Config cfg;			       /* exported to windlg.c */
+
+extern struct sesslist sesslist;       /* imported from windlg.c */
+
+struct agent_callback {
+    void (*callback)(void *, void *, int);
+    void *callback_ctx;
+    void *data;
+    int len;
+};
+
 #define FONT_NORMAL 0
 #define FONT_BOLD 1
 #define FONT_UNDERLINE 2
@@ -157,18 +177,19 @@ 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)
 {
 }
 
 int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 {
-    static char appname[] = "PuTTY";
     WORD winsock_ver;
     WSADATA wsadata;
     WNDCLASS wndclass;
@@ -190,6 +211,7 @@ 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();
 
@@ -203,8 +225,10 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 	ZeroMemory(&osVersion, sizeof(osVersion));
 	osVersion.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
 	if (!GetVersionEx ( (OSVERSIONINFO *) &osVersion)) {
+	    char *str = dupprintf("%s Fatal Error", appname);
             MessageBox(NULL, "Windows refuses to report a version",
-                       "PuTTY Fatal Error", MB_OK | MB_ICONEXCLAMATION);
+                       str, MB_OK | MB_ICONEXCLAMATION);
+	    sfree(str);
 	    return 1;
         }
     }
@@ -250,62 +274,34 @@ 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;
+	default_protocol = be_default_protocol;
+	/* Find the appropriate default port. */
+	{
+	    int i;
+	    default_port = 0; /* illegal */
+	    for (i = 0; backends[i].backend != NULL; i++)
+		if (backends[i].protocol == default_protocol) {
+		    default_port = backends[i].backend->default_port;
+		    break;
+		}
+	}
 	cfg.logtype = LGTYP_NONE;
 
 	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]))
@@ -335,53 +331,113 @@ 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, &cfg);
+		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.
+		     */
+		    char *s1, *s2;
+		    s1 = dupprintf("This procedure will remove ALL Registry\n"
+				   "entries associated with %s, and will\n"
+				   "also remove the random seed file.\n"
+				   "\n"
+				   "THIS PROCESS WILL DESTROY YOUR SAVED\n"
+				   "SESSIONS. Are you really sure you want\n"
+				   "to continue?", appname);
+		    s2 = dupprintf("%s Warning", appname);
+		    if (MessageBox(NULL, s1, s2,
+				   MB_YESNO | MB_ICONWARNING) == IDYES) {
+			cleanup_all();
+		    }
+		    sfree(s1);
+		    sfree(s2);
+		    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, &cfg);
+			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;
+		    }
+		} else {
+		    cmdline_error("unknown option \"%s\"", p);
+		}
 	    }
 	}
 
+	cmdline_run_saved(&cfg);
+
+	if (!*cfg.host && !do_config()) {
+	    WSACleanup();
+	    return 0;
+	}
+
 	/*
 	 * Trim leading whitespace off the hostname if it's there.
 	 */
@@ -407,6 +463,21 @@ 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';
+	}
     }
 
     /*
@@ -422,8 +493,10 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 		break;
 	    }
 	if (back == NULL) {
+	    char *str = dupprintf("%s Internal Error", appname);
 	    MessageBox(NULL, "Unsupported protocol number found",
-		       "PuTTY Internal Error", MB_OK | MB_ICONEXCLAMATION);
+		       str, MB_OK | MB_ICONEXCLAMATION);
+	    sfree(str);
 	    WSACleanup();
 	    return 1;
 	}
@@ -431,8 +504,10 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 
     /* Check for invalid Port number (i.e. zero) */
     if (cfg.port == 0) {
+	char *str = dupprintf("%s Internal Error", appname);
 	MessageBox(NULL, "Invalid Port Number",
-		   "PuTTY Internal Error", MB_OK | MB_ICONEXCLAMATION);
+		   str, MB_OK | MB_ICONEXCLAMATION);
+	sfree(str);
 	WSACleanup();
 	return 1;
     }
@@ -454,8 +529,11 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 
     hwnd = NULL;
 
-    savelines = cfg.savelines;
-    term_init();
+    memset(&ucsdata, 0, sizeof(ucsdata));
+
+    term = term_init(&cfg, &ucsdata, NULL);
+    logctx = log_init(NULL, &cfg);
+    term_provide_logctx(term, logctx);
 
     cfgtopalette();
 
@@ -470,13 +548,12 @@ 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)
@@ -522,8 +599,8 @@ 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);
 
@@ -533,7 +610,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
     {
 	char *bits;
 	int size = (font_width + 15) / 16 * 2 * font_height;
-	bits = smalloc(size);
+	bits = snewn(size, char);
 	memset(bits, 0, size);
 	caretbm = CreateBitmap(font_width, font_height, 1, 1, bits);
 	sfree(bits);
@@ -549,8 +626,8 @@ 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);
     }
@@ -563,25 +640,39 @@ 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(NULL, &backhandle, &cfg,
+			   cfg.host, cfg.port, &realhost, cfg.tcp_nodelay);
+	back->provide_logctx(backhandle, logctx);
 	if (error) {
+	    char *str = dupprintf("%s Error", appname);
 	    sprintf(msg, "Unable to open connection to\n"
 		    "%.800s\n" "%s", cfg.host, error);
-	    MessageBox(NULL, msg, "PuTTY Error", MB_ICONERROR | MB_OK);
+	    MessageBox(NULL, msg, str, MB_ICONERROR | MB_OK);
+	    sfree(str);
 	    return 0;
 	}
 	window_name = icon_name = NULL;
 	if (*cfg.wintitle) {
 	    title = cfg.wintitle;
 	} else {
-	    sprintf(msg, "%s - PuTTY", realhost);
+	    sprintf(msg, "%s - %s", realhost, appname);
 	    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(&cfg, term, back, backhandle, NULL);
+
     session_closed = FALSE;
 
     /*
@@ -596,41 +687,23 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
      */
     {
 	HMENU m = GetSystemMenu(hwnd, FALSE);
-	HMENU p, s;
+	HMENU s;
 	int i;
+	char *str;
 
 	AppendMenu(m, MF_SEPARATOR, 0, 0);
-	if (cfg.protocol == PROT_TELNET) {
-	    p = CreateMenu();
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_AYT, "Are You There");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_BRK, "Break");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_SYNCH, "Synch");
-	    AppendMenu(p, MF_SEPARATOR, 0, 0);
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_EC, "Erase Character");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_EL, "Erase Line");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_GA, "Go Ahead");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_NOP, "No Operation");
-	    AppendMenu(p, MF_SEPARATOR, 0, 0);
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_ABORT, "Abort Process");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_AO, "Abort Output");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_IP, "Interrupt Process");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_SUSP, "Suspend Process");
-	    AppendMenu(p, MF_SEPARATOR, 0, 0);
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_EOR, "End Of Record");
-	    AppendMenu(p, MF_ENABLED, IDM_TEL_EOF, "End Of File");
-	    AppendMenu(m, MF_POPUP | MF_ENABLED, (UINT) p,
-		       "Telnet Command");
-	    AppendMenu(m, MF_SEPARATOR, 0, 0);
-	}
+	specials_menu_position = GetMenuItemCount(m);
 	AppendMenu(m, MF_ENABLED, IDM_SHOWLOG, "&Event Log");
 	AppendMenu(m, MF_SEPARATOR, 0, 0);
 	AppendMenu(m, MF_ENABLED, IDM_NEWSESS, "Ne&w Session...");
 	AppendMenu(m, MF_ENABLED, IDM_DUPSESS, "&Duplicate Session");
 	s = CreateMenu();
-	get_sesslist(TRUE);
-	for (i = 1; i < ((nsessions < 256) ? nsessions : 256); i++)
+	get_sesslist(&sesslist, TRUE);
+	for (i = 1;
+	     i < ((sesslist.nsessions < 256) ? sesslist.nsessions : 256);
+	     i++)
 	    AppendMenu(s, MF_ENABLED, IDM_SAVED_MIN + (16 * i),
-		       sessions[i]);
+		       sesslist.sessions[i]);
 	AppendMenu(m, MF_POPUP | MF_ENABLED, (UINT) s, "Sa&ved Sessions");
 	AppendMenu(m, MF_ENABLED, IDM_RECONF, "Chan&ge Settings...");
 	AppendMenu(m, MF_SEPARATOR, 0, 0);
@@ -643,9 +716,13 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 	AppendMenu(m, MF_SEPARATOR, 0, 0);
         if (help_path)
             AppendMenu(m, MF_ENABLED, IDM_HELP, "&Help");
-	AppendMenu(m, MF_ENABLED, IDM_ABOUT, "&About PuTTY");
+	str = dupprintf("&About %s", appname);
+	AppendMenu(m, MF_ENABLED, IDM_ABOUT, str);
+	sfree(str);
     }
 
+    update_specials_menu(NULL);
+
     /*
      * Set up the initial input locale.
      */
@@ -654,7 +731,7 @@ 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!
@@ -669,7 +746,7 @@ 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) {
@@ -692,10 +769,10 @@ 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
@@ -707,9 +784,6 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 	    if (pending_netevent) {
 		enact_pending_netevent();
 
-		/* Force the cursor blink on */
-		term_blink(1);
-
 		if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
 		    continue;
 	    }
@@ -723,20 +797,22 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 		timer_id = 0;
 	    }
 	    HideCaret(hwnd);
-	    if (GetCapture() != 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);
@@ -751,6 +827,15 @@ 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.
      */
@@ -758,7 +843,9 @@ 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();
@@ -767,7 +854,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 #endif
     }
 
-    return msg.wParam;
+    exit(code);
 }
 
 /*
@@ -797,10 +884,42 @@ char *do_select(SOCKET skt, int startup)
 }
 
 /*
+ * Update the Special Commands submenu.
+ */
+void update_specials_menu(void *frontend)
+{
+    HMENU m = GetSystemMenu(hwnd, FALSE);
+    int menu_already_exists = (specials != NULL);
+    int i;
+
+    specials = back->get_specials(backhandle);
+    if (specials) {
+	HMENU p = CreateMenu();
+	for (i = 0; specials[i].name; i++) {
+	    assert(IDM_SPECIAL_MIN + 0x10 * i < IDM_SPECIAL_MAX);
+	    if (*specials[i].name)
+		AppendMenu(p, MF_ENABLED, IDM_SPECIAL_MIN + 0x10 * i,
+			   specials[i].name);
+	    else
+		AppendMenu(p, MF_SEPARATOR, 0, 0);
+	}
+	if (menu_already_exists)
+	    DeleteMenu(m, specials_menu_position, MF_BYPOSITION);
+	else
+	    InsertMenu(m, specials_menu_position,
+		       MF_BYPOSITION | MF_SEPARATOR, 0, 0);
+	InsertMenu(m, specials_menu_position,
+		   MF_BYPOSITION | MF_POPUP | MF_ENABLED,
+		   (UINT) p, "Special Command");
+    }
+}
+
+/*
  * 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));
 }
@@ -808,24 +927,46 @@ 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];
+    char *stuff, morestuff[100];
 
     va_start(ap, fmt);
-    vsprintf(stuff, fmt, ap);
+    stuff = dupvprintf(fmt, ap);
     va_end(ap);
-    MessageBox(hwnd, stuff, "PuTTY Fatal Error", MB_ICONERROR | MB_OK);
-    if (cfg.close_on_exit == COE_ALWAYS)
+    sprintf(morestuff, "%.70s Fatal Error", appname);
+    MessageBox(hwnd, stuff, morestuff, MB_ICONERROR | MB_OK);
+    sfree(stuff);
+
+    if (cfg.close_on_exit == FORCE_ON)
 	PostQuitMessage(1);
     else {
 	session_closed = TRUE;
-	SetWindowText(hwnd, "PuTTY (inactive)");
+	sprintf(morestuff, "%.70s (inactive)", appname);
+	set_icon(NULL, morestuff);
+	set_title(NULL, morestuff);
     }
 }
 
 /*
+ * Report an error at the command-line parsing stage.
+ */
+void cmdline_error(char *fmt, ...)
+{
+    va_list ap;
+    char *stuff, morestuff[100];
+
+    va_start(ap, fmt);
+    stuff = dupvprintf(fmt, ap);
+    va_end(ap);
+    sprintf(morestuff, "%.70s Command Line Error", appname);
+    MessageBox(hwnd, stuff, morestuff, MB_ICONERROR | MB_OK);
+    sfree(stuff);
+    exit(1);
+}
+
+/*
  * Actually do the job requested by a WM_NETEVENT
  */
 static void enact_pending_netevent(void)
@@ -846,13 +987,16 @@ static void enact_pending_netevent(void)
     if (ret == 0 && !session_closed) {
 	/* Abnormal exits will already have set session_closed and taken
 	 * appropriate action. */
-	if (cfg.close_on_exit == COE_ALWAYS ||
-	    cfg.close_on_exit == COE_NORMAL) PostQuitMessage(0);
+	if (cfg.close_on_exit == FORCE_ON ||
+	    cfg.close_on_exit == AUTO) PostQuitMessage(0);
 	else {
+	    char morestuff[100];
 	    session_closed = TRUE;
-	    SetWindowText(hwnd, "PuTTY (inactive)");
+	    sprintf(morestuff, "%.70s (inactive)", appname);
+	    set_icon(NULL, morestuff);
+	    set_title(NULL, morestuff);
 	    MessageBox(hwnd, "Connection closed by remote host",
-		       "PuTTY", MB_OK | MB_ICONINFORMATION);
+		       appname, MB_OK | MB_ICONINFORMATION);
 	}
     }
 }
@@ -887,6 +1031,10 @@ static void init_palette(void)
     HDC hdc = GetDC(hwnd);
     if (hdc) {
 	if (cfg.try_palette && GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE) {
+	    /*
+	     * This is a genuine case where we must use smalloc
+	     * because the snew macros can't cope.
+	     */
 	    logpal = smalloc(sizeof(*logpal)
 			     - sizeof(logpal->palPalEntry)
 			     + NCOLOURS * sizeof(PALETTEENTRY));
@@ -950,7 +1098,7 @@ static void init_fonts(int pick_width, int pick_height)
     bold_mode = cfg.bold_colour ? BOLD_COLOURS : BOLD_FONT;
     und_mode = UND_FONT;
 
-    if (cfg.fontisbold) {
+    if (cfg.font.isbold) {
 	fw_dontcare = FW_BOLD;
 	fw_bold = FW_HEAVY;
     } else {
@@ -963,7 +1111,7 @@ static void init_fonts(int pick_width, int pick_height)
     if (pick_height)
 	font_height = pick_height;
     else {
-	font_height = cfg.fontheight;
+	font_height = cfg.font.height;
 	if (font_height > 0) {
 	    font_height =
 		-MulDiv(font_height, GetDeviceCaps(hdc, LOGPIXELSY), 72);
@@ -975,9 +1123,9 @@ static void init_fonts(int pick_width, int pick_height)
     fonts[i] = CreateFont (font_height, font_width, 0, 0, w, FALSE, u, FALSE, \
 			   c, OUT_DEFAULT_PRECIS, \
 		           CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, \
-			   FIXED_PITCH | FF_DONTCARE, cfg.font)
+			   FIXED_PITCH | FF_DONTCARE, cfg.font.name)
 
-    f(FONT_NORMAL, cfg.fontcharset, fw_dontcare, FALSE);
+    f(FONT_NORMAL, cfg.font.charset, fw_dontcare, FALSE);
 
     lfont.lfHeight = font_height;
     lfont.lfWidth = font_width;
@@ -987,12 +1135,12 @@ static void init_fonts(int pick_width, int pick_height)
     lfont.lfItalic = FALSE;
     lfont.lfUnderline = FALSE;
     lfont.lfStrikeOut = FALSE;
-    lfont.lfCharSet = cfg.fontcharset;
+    lfont.lfCharSet = cfg.font.charset;
     lfont.lfOutPrecision = OUT_DEFAULT_PRECIS;
     lfont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
     lfont.lfQuality = DEFAULT_QUALITY;
     lfont.lfPitchAndFamily = FIXED_PITCH | FF_DONTCARE;
-    strncpy(lfont.lfFaceName, cfg.font, LF_FACESIZE);
+    strncpy(lfont.lfFaceName, cfg.font.name, LF_FACESIZE);
 
     SelectObject(hdc, fonts[FONT_NORMAL]);
     GetTextMetrics(hdc, &tm);
@@ -1015,19 +1163,18 @@ static void init_fonts(int pick_width, int pick_height)
 
 	/* !!! Yes the next line is right */
 	if (cset == OEM_CHARSET)
-	    font_codepage = GetOEMCP();
+	    ucsdata.font_codepage = GetOEMCP();
 	else
-	    if (TranslateCharsetInfo
-		((DWORD *) cset, &info, TCI_SRCCHARSET)) font_codepage =
-		info.ciACP;
+	    if (TranslateCharsetInfo ((DWORD *) cset, &info, TCI_SRCCHARSET))
+		ucsdata.font_codepage = info.ciACP;
 	else
-	    font_codepage = -1;
+	    ucsdata.font_codepage = -1;
 
-	GetCPInfo(font_codepage, &cpinfo);
-	dbcs_screenfont = (cpinfo.MaxCharSize > 1);
+	GetCPInfo(ucsdata.font_codepage, &cpinfo);
+	ucsdata.dbcs_screenfont = (cpinfo.MaxCharSize > 1);
     }
 
-    f(FONT_UNDERLINE, cfg.fontcharset, fw_dontcare, TRUE);
+    f(FONT_UNDERLINE, cfg.font.charset, fw_dontcare, TRUE);
 
     /*
      * Some fonts, e.g. 9-pt Courier, draw their underlines
@@ -1078,7 +1225,7 @@ static void init_fonts(int pick_width, int pick_height)
     }
 
     if (bold_mode == BOLD_FONT) {
-	f(FONT_BOLD, cfg.fontcharset, fw_bold, FALSE);
+	f(FONT_BOLD, cfg.font.charset, fw_bold, FALSE);
     }
 #undef f
 
@@ -1112,7 +1259,7 @@ static void init_fonts(int pick_width, int pick_height)
     }
     fontflag[0] = fontflag[1] = fontflag[2] = 1;
 
-    init_ucs_tables();
+    init_ucs(&cfg, &ucsdata);
 }
 
 static void another_font(int fontno)
@@ -1129,7 +1276,7 @@ static void another_font(int fontno)
     if (basefont != fontno && !fontflag[basefont])
 	another_font(basefont);
 
-    if (cfg.fontisbold) {
+    if (cfg.font.isbold) {
 	fw_dontcare = FW_BOLD;
 	fw_bold = FW_HEAVY;
     } else {
@@ -1137,10 +1284,10 @@ static void another_font(int fontno)
 	fw_bold = FW_BOLD;
     }
 
-    c = cfg.fontcharset;
+    c = cfg.font.charset;
     w = fw_dontcare;
     u = FALSE;
-    s = cfg.font;
+    s = cfg.font.name;
     x = font_width;
 
     if (fontno & FONT_WIDE)
@@ -1174,7 +1321,7 @@ static void deinit_fonts(void)
     }
 }
 
-void request_resize(int w, int h)
+void request_resize(void *frontend, int w, int h)
 {
     int width, height;
 
@@ -1185,7 +1332,7 @@ 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 ... */
     {
@@ -1195,7 +1342,7 @@ 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;
@@ -1215,7 +1362,7 @@ 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;
@@ -1269,10 +1416,10 @@ 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"));
@@ -1288,12 +1435,12 @@ 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)",
@@ -1301,15 +1448,15 @@ 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"));
@@ -1331,16 +1478,16 @@ 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);
 	}
 
@@ -1359,24 +1506,27 @@ 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);
@@ -1384,9 +1534,9 @@ 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));
@@ -1395,15 +1545,15 @@ 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;
@@ -1411,14 +1561,14 @@ 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;
@@ -1447,7 +1597,8 @@ 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, translate_button(b), MA_CLICK,
+		   x, y, shift, ctrl, alt);
 	return;
     }
 
@@ -1460,7 +1611,8 @@ 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, translate_button(b), lastact,
+		   x, y, shift, ctrl, alt);
     lasttime = thistime;
 }
 
@@ -1468,7 +1620,7 @@ 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)
+static Mouse_Button translate_button(Mouse_Button button)
 {
     if (button == MBT_LEFT)
 	return MBT_SELECT;
@@ -1504,6 +1656,17 @@ 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,
@@ -1518,17 +1681,18 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
       case WM_TIMER:
 	if (pending_netevent)
 	    enact_pending_netevent();
-	if (GetCapture() != hwnd)
-	    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;
 	    }
 	}
@@ -1537,13 +1701,17 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
       case WM_CREATE:
 	break;
       case WM_CLOSE:
-	show_mouseptr(1);
-	if (!cfg.warn_on_close || session_closed ||
-	    MessageBox(hwnd,
-		       "Are you sure you want to close this session?",
-		       "PuTTY Exit Confirmation",
-		       MB_ICONWARNING | MB_OKCANCEL) == IDOK)
-	    DestroyWindow(hwnd);
+	{
+	    char *str;
+	    show_mouseptr(1);
+	    str = dupprintf("%s Exit Confirmation", appname);
+	    if (!cfg.warn_on_close || session_closed ||
+		MessageBox(hwnd,
+			   "Are you sure you want to close this session?",
+			   str, MB_ICONWARNING | MB_OKCANCEL) == IDOK)
+		DestroyWindow(hwnd);
+	    sfree(str);
+	}
 	return 0;
       case WM_DESTROY:
 	show_mouseptr(1);
@@ -1592,10 +1760,10 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 		    sprintf(c, "putty &%p", filemap);
 		    cl = c;
 		} else if (wParam == IDM_SAVEDSESS) {
-		    if ((lParam - IDM_SAVED_MIN) / 16 < nsessions) {
+		    if ((lParam - IDM_SAVED_MIN) / 16 < sesslist.nsessions) {
 			char *session =
-			    sessions[(lParam - IDM_SAVED_MIN) / 16];
-			cl = smalloc(16 + strlen(session));
+			    sesslist.sessions[(lParam - IDM_SAVED_MIN) / 16];
+			cl = snewn(16 + strlen(session), char);
 				       /* 8, but play safe */
 			if (!cl)
 			    cl = NULL;    
@@ -1650,18 +1818,15 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 		    }
 		}
 
-		if (strcmp(prev_cfg.logfilename, cfg.logfilename) ||
-		    prev_cfg.logtype != cfg.logtype) {
-		    logfclose();       /* reset logging */
-		    logfopen();
-		}
+		/* Pass new config data to the logging module */
+		log_reconfig(logctx, &cfg);
 
 		sfree(logpal);
 		/*
 		 * 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;
@@ -1669,6 +1834,12 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 		cfgtopalette();
 		init_palette();
 
+		/* Pass new config data to the terminal */
+		term_reconfig(term, &cfg);
+
+		/* Pass new config data to the back end */
+		back->reconfig(backhandle, &cfg);
+
 		/* Screen size changed ? */
 		if (cfg.height != prev_cfg.height ||
 		    cfg.width != prev_cfg.width ||
@@ -1676,7 +1847,7 @@ 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 */
 		{
@@ -1740,18 +1911,18 @@ 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 :
 				  icon_name);
 		}
 
-		if (strcmp(cfg.font, prev_cfg.font) != 0 ||
+		if (strcmp(cfg.font.name, prev_cfg.font.name) != 0 ||
 		    strcmp(cfg.line_codepage, prev_cfg.line_codepage) != 0 ||
-		    cfg.fontisbold != prev_cfg.fontisbold ||
-		    cfg.fontheight != prev_cfg.fontheight ||
-		    cfg.fontcharset != prev_cfg.fontcharset ||
+		    cfg.font.isbold != prev_cfg.font.isbold ||
+		    cfg.font.height != prev_cfg.font.height ||
+		    cfg.font.charset != prev_cfg.font.charset ||
 		    cfg.vtmode != prev_cfg.vtmode ||
 		    cfg.bold_colour != prev_cfg.bold_colour ||
 		    cfg.resize_action == RESIZE_DISABLED ||
@@ -1765,65 +1936,14 @@ 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();
-	    break;
-	  case IDM_TEL_AYT:
-	    back->special(TS_AYT);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_BRK:
-	    back->special(TS_BRK);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_SYNCH:
-	    back->special(TS_SYNCH);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_EC:
-	    back->special(TS_EC);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_EL:
-	    back->special(TS_EL);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_GA:
-	    back->special(TS_GA);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_NOP:
-	    back->special(TS_NOP);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_ABORT:
-	    back->special(TS_ABORT);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_AO:
-	    back->special(TS_AO);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_IP:
-	    back->special(TS_IP);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_SUSP:
-	    back->special(TS_SUSP);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_EOR:
-	    back->special(TS_EOR);
-	    net_pending_errors();
-	    break;
-	  case IDM_TEL_EOF:
-	    back->special(TS_EOF);
-	    net_pending_errors();
+	    term_pwron(term);
+	    ldisc_send(ldisc, NULL, 0, 0);
 	    break;
 	  case IDM_ABOUT:
 	    showabout(hwnd);
@@ -1859,6 +1979,22 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 	    if (wParam >= IDM_SAVED_MIN && wParam <= IDM_SAVED_MAX) {
 		SendMessage(hwnd, WM_SYSCOMMAND, IDM_SAVEDSESS, wParam);
 	    }
+	    if (wParam >= IDM_SPECIAL_MIN && wParam <= IDM_SPECIAL_MAX) {
+		int i = (wParam - IDM_SPECIAL_MIN) / 0x10;
+		int j;
+		/*
+		 * Ensure we haven't been sent a bogus SYSCOMMAND
+		 * which would cause us to reference invalid memory
+		 * and crash. Perhaps I'm just too paranoid here.
+		 */
+		for (j = 0; j < i; j++)
+		    if (!specials || !specials[j].name)
+			break;
+		if (j == i) {
+		    back->special(backhandle, specials[i].code);
+		    net_pending_errors();
+		}
+	    }
 	}
 	break;
 
@@ -1923,7 +2059,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 		      is_alt_pressed());
 		SetCapture(hwnd);
 	    } else {
-		term_mouse(button, MA_RELEASE,
+		term_mouse(term, button, translate_button(button), MA_RELEASE,
 			   TO_CHR_X(X_POS(lParam)),
 			   TO_CHR_Y(Y_POS(lParam)), wParam & MK_SHIFT,
 			   wParam & MK_CONTROL, is_alt_pressed());
@@ -1948,7 +2084,8 @@ 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, translate_button(b), MA_DRAG,
+		       TO_CHR_X(X_POS(lParam)),
 		       TO_CHR_Y(Y_POS(lParam)), wParam & MK_SHIFT,
 		       wParam & MK_CONTROL, is_alt_pressed());
 	}
@@ -1962,7 +2099,7 @@ 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:
@@ -1974,17 +2111,18 @@ 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,
-		       (p.rcPaint.bottom-offset_height-1)/font_height);
+		       (p.rcPaint.bottom-offset_height-1)/font_height,
+		       is_alt_pressed());
 
 	    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;
@@ -1995,10 +2133,21 @@ 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);
@@ -2033,21 +2182,21 @@ 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();
 	caret_x = caret_y = -1;	       /* ensure caret is replaced next time */
-	term_out();
-	term_update();
+	term_out(term);
+	term_update(term);
 	break;
       case WM_ENTERSIZEMOVE:
 #ifdef RDB_DEBUG_PATCH
@@ -2064,7 +2213,7 @@ 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;
@@ -2074,12 +2223,12 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 	 * 1) Keep the sizetip uptodate
 	 * 2) Make sure the window size is _stepped_ in units of the font size.
 	 */
-	if (cfg.resize_action != RESIZE_FONT && !alt_pressed) {
+	if (cfg.resize_action != RESIZE_FONT && !is_alt_pressed()) {
 	    int width, height, w, h, ew, eh;
 	    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.
@@ -2089,10 +2238,10 @@ 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;
@@ -2136,25 +2285,25 @@ 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;
 	}
@@ -2183,8 +2332,8 @@ 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) {
@@ -2200,21 +2349,21 @@ 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
@@ -2235,7 +2384,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 	     * down the connection during an NT opaque drag.)
 	     */
 	    if (resizing) {
-		if (cfg.resize_action != RESIZE_FONT && !alt_pressed) {
+		if (cfg.resize_action != RESIZE_FONT && !is_alt_pressed()) {
 		    need_backend_resize = TRUE;
 		    w = (width-cfg.window_border*2) / font_width;
 		    if (w < 1) w = 1;
@@ -2253,32 +2402,32 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
       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);
@@ -2288,7 +2437,7 @@ 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);
@@ -2337,7 +2486,7 @@ 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
@@ -2347,7 +2496,8 @@ 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);
 		}
 	    }
@@ -2385,7 +2535,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 
 	    if (n > 0) {
 		int i;
-		buff = (char*) smalloc(n);
+		buff = snewn(n, char);
 		ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, buff, n);
 		/*
 		 * Jaeyoun Chung reports that Korean character
@@ -2393,8 +2543,10 @@ 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);
@@ -2407,10 +2559,12 @@ 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:
@@ -2423,7 +2577,8 @@ 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:
@@ -2431,9 +2586,17 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 	    SetCursor(LoadCursor(NULL, IDC_ARROW));
 	    return TRUE;
 	}
+	break;
+      case WM_AGENT_CALLBACK:
+	{
+	    struct agent_callback *c = (struct agent_callback *)lParam;
+	    c->callback(c->callback_ctx, c->data, c->len);
+	    sfree(c);
+	}
+	return 0;
       default:
-	if (message == wm_mousewheel) {
-	    int shift_pressed=0, control_pressed=0, alt_pressed=0;
+	if (message == wm_mousewheel || message == WM_MOUSEWHEEL) {
+	    int shift_pressed=0, control_pressed=0;
 
 	    if (message == WM_MOUSEWHEEL) {
 		wheel_accumulator += (short)HIWORD(wParam);
@@ -2465,18 +2628,20 @@ 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, translate_button(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, translate_button(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;
@@ -2492,11 +2657,11 @@ 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 (!has_focus) return;
+    if (!term->has_focus) return;
 
     /*
      * Avoid gratuitously re-updating the cursor position and IMM
@@ -2517,7 +2682,7 @@ static void sys_cursor_update(void)
     COMPOSITIONFORM cf;
     HIMC hIMC;
 
-    if (!has_focus) return;
+    if (!term->has_focus) return;
 
     if (caret_x < 0 || caret_y < 0)
 	return;
@@ -2566,7 +2731,7 @@ void do_text(Context ctx, int x, int y, char *text, int len,
 	int i;
 	if (len > IpDxLEN) {
 	    sfree(IpDx);
-	    IpDx = smalloc((len + 16) * sizeof(int));
+	    IpDx = snewn(len + 16, int);
 	    IpDxLEN = (len + 16);
 	}
 	for (i = 0; i < IpDxLEN; i++)
@@ -2574,7 +2739,7 @@ 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;
@@ -2582,7 +2747,7 @@ 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;
     }
@@ -2625,8 +2790,8 @@ void do_text(Context ctx, int x, int y, char *text, int len,
 	    if (lattr == LATTR_TOP || lattr == LATTR_BOT)
 		text_adjust *= 2;
 	    attr &= ~CSET_MASK;
-	    text[0] = (char) (unitab_xterm['q'] & CHAR_MASK);
-	    attr |= (unitab_xterm['q'] & CSET_MASK);
+	    text[0] = (char) (ucsdata.unitab_xterm['q'] & CHAR_MASK);
+	    attr |= (ucsdata.unitab_xterm['q'] & CSET_MASK);
 	    if (attr & ATTR_UNDER) {
 		attr &= ~ATTR_UNDER;
 		force_manual_underline = 1;
@@ -2645,8 +2810,10 @@ void do_text(Context ctx, int x, int y, char *text, int len,
     if ((attr & CSET_MASK) == ATTR_OEMCP)
 	nfont |= FONT_OEM;
 
-    nfg = 2 * ((attr & ATTR_FGMASK) >> ATTR_FGSHIFT);
-    nbg = 2 * ((attr & ATTR_BGMASK) >> ATTR_BGSHIFT);
+    nfg = ((attr & ATTR_FGMASK) >> ATTR_FGSHIFT);
+    nfg = 2 * (nfg & 0xF) + (nfg & 0x10 ? 1 : 0);
+    nbg = ((attr & ATTR_BGMASK) >> ATTR_BGSHIFT);
+    nbg = 2 * (nbg & 0xF) + (nbg & 0x10 ? 1 : 0);
     if (bold_mode == BOLD_FONT && (attr & ATTR_BOLD))
 	nfont |= FONT_BOLD;
     if (und_mode == UND_FONT && (attr & ATTR_UNDER))
@@ -2668,9 +2835,9 @@ void do_text(Context ctx, int x, int y, char *text, int len,
 	nbg = t;
     }
     if (bold_mode == BOLD_COLOURS && (attr & ATTR_BOLD))
-	nfg++;
+	nfg |= 1;
     if (bold_mode == BOLD_COLOURS && (attr & ATTR_BLINK))
-	nbg++;
+	nbg |= 1;
     fg = colours[nfg];
     bg = colours[nbg];
     SelectObject(hdc, fonts[nfont]);
@@ -2683,11 +2850,11 @@ 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) {
+    if (ucsdata.dbcs_screenfont && (attr & CSET_MASK) == ATTR_ACP) {
 	/* Ho Hum, dbcs fonts are a PITA! */
 	/* To display on W9x I have to convert to UCS */
 	static wchar_t *uni_buf = 0;
@@ -2695,20 +2862,21 @@ void do_text(Context ctx, int x, int y, char *text, int len,
 	int nlen, mptr;
 	if (len > uni_len) {
 	    sfree(uni_buf);
-	    uni_buf = smalloc((uni_len = len) * sizeof(wchar_t));
+	    uni_len = len;
+	    uni_buf = snewn(uni_len, wchar_t);
 	}
 
 	for(nlen = mptr = 0; mptr<len; mptr++) {
 	    uni_buf[nlen] = 0xFFFD;
-	    if (IsDBCSLeadByteEx(font_codepage, (BYTE) text[mptr])) {
+	    if (IsDBCSLeadByteEx(ucsdata.font_codepage, (BYTE) text[mptr])) {
 		IpDx[nlen] += char_width;
-	        MultiByteToWideChar(font_codepage, MB_USEGLYPHCHARS,
+	        MultiByteToWideChar(ucsdata.font_codepage, MB_USEGLYPHCHARS,
 				   text+mptr, 2, uni_buf+nlen, 1);
 		mptr++;
 	    }
 	    else
 	    {
-	        MultiByteToWideChar(font_codepage, MB_USEGLYPHCHARS,
+	        MultiByteToWideChar(ucsdata.font_codepage, MB_USEGLYPHCHARS,
 				   text+mptr, 1, uni_buf+nlen, 1);
 	    }
 	    nlen++;
@@ -2755,7 +2923,7 @@ void do_text(Context ctx, int x, int y, char *text, int len,
 	if (wlen < len) {
 	    sfree(wbuf);
 	    wlen = len;
-	    wbuf = smalloc(wlen * sizeof(WCHAR));
+	    wbuf = snewn(wlen, WCHAR);
 	}
 	for (i = 0; i < len; i++)
 	    wbuf[i] = (WCHAR) ((attr & CSET_MASK) + (text[i] & CHAR_MASK));
@@ -2798,7 +2966,7 @@ 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;
@@ -2815,7 +2983,7 @@ 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;
@@ -2866,7 +3034,7 @@ void do_cursor(Context ctx, int x, int y, char *text, int len,
 
 /* This function gets the actual width of a character in the normal font.
  */
-int CharWidth(Context ctx, int uc) {
+int char_width(Context ctx, int uc) {
     HDC hdc = ctx;
     int ibuf = 0;
 
@@ -2877,17 +3045,17 @@ int CharWidth(Context ctx, int uc) {
 
     switch (uc & CSET_MASK) {
       case ATTR_ASCII:
-	uc = unitab_line[uc & 0xFF];
+	uc = ucsdata.unitab_line[uc & 0xFF];
 	break;
       case ATTR_LINEDRW:
-	uc = unitab_xterm[uc & 0xFF];
+	uc = ucsdata.unitab_xterm[uc & 0xFF];
 	break;
       case ATTR_SCOACS:
-	uc = unitab_scoacs[uc & 0xFF];
+	uc = ucsdata.unitab_scoacs[uc & 0xFF];
 	break;
     }
     if (DIRECT_FONT(uc)) {
-	if (dbcs_screenfont) return 1;
+	if (ucsdata.dbcs_screenfont) return 1;
 
 	/* Speedup, I know of no font where ascii is the wrong width */
 	if ((uc&CHAR_MASK) >= ' ' && (uc&CHAR_MASK)<= '~') 
@@ -3031,7 +3199,8 @@ 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;
@@ -3046,7 +3215,8 @@ 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)
@@ -3064,8 +3234,6 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 	}
     }
 
-    alt_pressed = (left_alt && key_down);
-
     scan = (HIWORD(lParam) & (KF_UP | KF_EXTENDED | 0xFF));
     shift_state = ((keystate[VK_SHIFT] & 0x80) != 0)
 	+ ((keystate[VK_CONTROL] & 0x80) != 0) * 2;
@@ -3092,20 +3260,11 @@ 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) {
@@ -3164,12 +3323,20 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 	    SendMessage(hwnd, WM_VSCROLL, SB_PAGEUP, 0);
 	    return 0;
 	}
+	if (wParam == VK_PRIOR && shift_state == 2) {
+	    SendMessage(hwnd, WM_VSCROLL, SB_LINEUP, 0);
+	    return 0;
+	}
 	if (wParam == VK_NEXT && shift_state == 1) {
 	    SendMessage(hwnd, WM_VSCROLL, SB_PAGEDOWN, 0);
 	    return 0;
 	}
+	if (wParam == VK_NEXT && shift_state == 2) {
+	    SendMessage(hwnd, WM_VSCROLL, SB_LINEDOWN, 0);
+	    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) {
@@ -3187,7 +3354,7 @@ 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;
 	}
 
@@ -3230,7 +3397,7 @@ 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;
@@ -3244,7 +3411,7 @@ 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';
@@ -3311,7 +3478,7 @@ 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
@@ -3327,6 +3494,12 @@ 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++ = '[';
@@ -3356,7 +3529,7 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 	    *p++ = "\000\033\034\035\036\037\177"[wParam - '2'];
 	    return p - output;
 	}
-	if (shift_state == 2 && wParam == 0xBD) {
+	if (shift_state == 2 && (wParam == 0xBD || wParam == 0xBF)) {
 	    *p++ = 0x1F;
 	    return p - output;
 	}
@@ -3364,7 +3537,7 @@ 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;
@@ -3466,7 +3639,7 @@ 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;
 	}
@@ -3504,13 +3677,13 @@ 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 +=
@@ -3522,7 +3695,7 @@ 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);
@@ -3561,10 +3734,10 @@ 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
@@ -3580,7 +3753,7 @@ 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 */
@@ -3627,7 +3800,7 @@ 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) || ucsdata.dbcs_screenfont)
 		    debug((", (U+%04x)", alt_sum));
 		else
 		    debug((", LCH(%d)", alt_sum));
@@ -3651,7 +3824,7 @@ 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++) {
@@ -3671,7 +3844,8 @@ 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;
 		}
 
@@ -3679,9 +3853,10 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
 
 		if (!key_down) {
 		    if (alt_sum) {
-			if (in_utf || dbcs_screenfont) {
+			if (in_utf(term) || ucsdata.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;
 			    /*
@@ -3693,22 +3868,27 @@ 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);
@@ -3723,7 +3903,7 @@ 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) || ucsdata.dbcs_screenfont))
 	    keys[0] = 10;
     }
 
@@ -3740,25 +3920,35 @@ 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));
+    window_name = snewn(1 + strlen(title), char);
     strcpy(window_name, title);
     if (cfg.win_name_always || !IsIconic(hwnd))
 	SetWindowText(hwnd, title);
 }
 
-void set_icon(char *title)
+void set_icon(void *frontend, char *title)
 {
     sfree(icon_name);
-    icon_name = smalloc(1 + strlen(title));
+    icon_name = snewn(1 + strlen(title), char);
     strcpy(icon_name, title);
     if (!cfg.win_name_always && IsIconic(hwnd))
 	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;
 
@@ -3775,7 +3965,7 @@ 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) {
@@ -3806,7 +3996,7 @@ 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,
@@ -3817,14 +4007,14 @@ 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;
 
@@ -3845,13 +4035,13 @@ 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;
@@ -3883,7 +4073,7 @@ 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;
@@ -3922,10 +4112,10 @@ void write_clip(wchar_t * data, int len, int must_deselect)
 
 	get_unitab(CP_ACP, unitab, 0);
 
-	rtfsize = 100 + strlen(cfg.font);
-	rtf = smalloc(rtfsize);
+	rtfsize = 100 + strlen(cfg.font.name);
+	rtf = snewn(rtfsize, char);
 	sprintf(rtf, "{\\rtf1\\ansi%d{\\fonttbl\\f0\\fmodern %s;}\\f0",
-		GetACP(), cfg.font);
+		GetACP(), cfg.font.name);
 	rtflen = strlen(rtf);
 
 	/*
@@ -3988,7 +4178,7 @@ void write_clip(wchar_t * data, int len, int must_deselect)
 
 	    if (rtfsize < rtflen + totallen + 3) {
 		rtfsize = rtflen + totallen + 512;
-		rtf = srealloc(rtf, rtfsize);
+		rtf = sresize(rtf, rtfsize, char);
 	    }
 
 	    strcpy(rtf + rtflen, before); rtflen += blen;
@@ -4046,7 +4236,7 @@ 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;
@@ -4076,7 +4266,7 @@ void get_clip(wchar_t ** p, int *len)
 	    CloseClipboard();
 	    s = GlobalLock(clipdata);
 	    i = MultiByteToWideChar(CP_ACP, 0, s, strlen(s) + 1, 0, 0);
-	    *p = converted = smalloc(i * sizeof(wchar_t));
+	    *p = converted = snewn(i, wchar_t);
 	    MultiByteToWideChar(CP_ACP, 0, s, strlen(s) + 1, converted, i);
 	    *len = i - 1;
 	    return;
@@ -4093,7 +4283,7 @@ 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;
@@ -4102,7 +4292,7 @@ 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);
@@ -4115,13 +4305,33 @@ void optimised_move(int to, int from, int lines)
 void fatalbox(char *fmt, ...)
 {
     va_list ap;
-    char stuff[200];
+    char *stuff, morestuff[100];
 
     va_start(ap, fmt);
-    vsprintf(stuff, fmt, ap);
+    stuff = dupvprintf(fmt, ap);
     va_end(ap);
-    MessageBox(hwnd, stuff, "PuTTY Fatal Error", MB_ICONERROR | MB_OK);
-    exit(1);
+    sprintf(morestuff, "%.70s Fatal Error", appname);
+    MessageBox(hwnd, stuff, morestuff, MB_ICONERROR | MB_OK);
+    sfree(stuff);
+    cleanup_exit(1);
+}
+
+/*
+ * Print a modal (Really Bad) message box and perform a fatal exit.
+ */
+void modalfatalbox(char *fmt, ...)
+{
+    va_list ap;
+    char *stuff, morestuff[100];
+
+    va_start(ap, fmt);
+    stuff = dupvprintf(fmt, ap);
+    va_end(ap);
+    sprintf(morestuff, "%.70s Fatal Error", appname);
+    MessageBox(hwnd, stuff, morestuff,
+	       MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
+    sfree(stuff);
+    cleanup_exit(1);
 }
 
 /*
@@ -4163,7 +4373,7 @@ static void flash_window(int mode)
 /*
  * Beep.
  */
-void beep(int mode)
+void beep(void *frontend, int mode)
 {
     if (mode == BELL_DEFAULT) {
 	/*
@@ -4185,17 +4395,20 @@ void beep(int mode)
 	 */
 	lastbeep = GetTickCount();
     } else if (mode == BELL_WAVEFILE) {
-	if (!PlaySound(cfg.bell_wavefile, NULL, SND_ASYNC | SND_FILENAME)) {
+	if (!PlaySound(cfg.bell_wavefile.path, NULL,
+		       SND_ASYNC | SND_FILENAME)) {
 	    char buf[sizeof(cfg.bell_wavefile) + 80];
+	    char otherbuf[100];
 	    sprintf(buf, "Unable to play sound file\n%s\n"
 		    "Using default sound instead", cfg.bell_wavefile);
-	    MessageBox(hwnd, buf, "PuTTY Sound Error",
+	    sprintf(otherbuf, "%.70s Sound Error", appname);
+	    MessageBox(hwnd, buf, otherbuf,
 		       MB_OK | MB_ICONEXCLAMATION);
 	    cfg.beep = BELL_DEFAULT;
 	}
     }
     /* Otherwise, either visual bell or disabled; do nothing here */
-    if (!has_focus) {
+    if (!term->has_focus) {
 	flash_window(2);	       /* start */
     }
 }
@@ -4204,7 +4417,7 @@ 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)
@@ -4218,8 +4431,13 @@ 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);
 }
 
@@ -4227,7 +4445,7 @@ 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 */
@@ -4238,7 +4456,7 @@ 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);
 }
@@ -4247,7 +4465,7 @@ 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)
@@ -4261,7 +4479,7 @@ 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);
 }
@@ -4269,7 +4487,7 @@ 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);
@@ -4280,7 +4498,7 @@ 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);
@@ -4291,7 +4509,7 @@ 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;
 }
@@ -4308,6 +4526,32 @@ 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.
@@ -4315,10 +4559,13 @@ 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);
@@ -4329,24 +4576,11 @@ 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,
@@ -4397,3 +4631,30 @@ 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;
+}
+
+int from_backend(void *frontend, int is_stderr, const char *data, int len)
+{
+    return term_data(term, is_stderr, data, len);
+}
+
+void agent_schedule_callback(void (*callback)(void *, void *, int),
+			     void *callback_ctx, void *data, int len)
+{
+    struct agent_callback *c = snew(struct agent_callback);
+    c->callback = callback;
+    c->callback_ctx = callback_ctx;
+    c->data = data;
+    c->len = len;
+    PostMessage(hwnd, WM_AGENT_CALLBACK, 0, (LPARAM)c);
+}