Go back to using intervals of 16 for the saved session identifiers for the

system menu, but expand from 256 entries to 1024 as there seems to be plenty
of space.

Also remove a couple of unused IDM_* constants.

[originally from svn r4733]

window.c

@@ -25,7 +25,7 @@
 /* From MSDN: In the WM_SYSCOMMAND message, the four low-order bits of
  * wParam are used by Windows, and should be masked off, so we shouldn't
  * attempt to store information in them. Hence all these identifiers have
- * the low 4 bits clear. */
+ * the low 4 bits clear. Also, identifiers should < 0xF000. */
 
 #define IDM_SHOWLOG   0x0010
 #define IDM_NEWSESS   0x0020
@@ -41,17 +41,14 @@
 #define IDM_FULLSCREEN	0x0180
 #define IDM_PASTE     0x0190
 
-#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 IDM_SAVED_MAX 0x5000
+#define MENU_SAVED_STEP 16
 /* Maximum number of sessions on saved-session submenu */
-#define MENU_SAVED_MAX (IDM_SAVED_MAX-IDM_SAVED_MIN)
+#define MENU_SAVED_MAX ((IDM_SAVED_MAX-IDM_SAVED_MIN) / MENU_SAVED_STEP)
 
 #define WM_IGNORE_CLIP (WM_XUSER + 2)
 #define WM_FULLSCR_ON_MAX (WM_XUSER + 3)
@@ -720,7 +717,7 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
 	     i < ((sesslist.nsessions <= MENU_SAVED_MAX+1) ? sesslist.nsessions
 							   : MENU_SAVED_MAX+1);
 	     i++)
-	    AppendMenu(s, MF_ENABLED, IDM_SAVED_MIN + i-1,
+	    AppendMenu(s, MF_ENABLED, IDM_SAVED_MIN + (i-1)*MENU_SAVED_STEP,
 		       sesslist.sessions[i]);
 
 	for (j = 0; j < lenof(popup_menus); j++) {
@@ -1892,7 +1889,8 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 		    sprintf(c, "putty &%p", filemap);
 		    cl = c;
 		} else if (wParam == IDM_SAVEDSESS) {
-		    unsigned int sessno = lParam - IDM_SAVED_MIN + 1;
+		    unsigned int sessno = ((lParam - IDM_SAVED_MIN)
+					   / MENU_SAVED_STEP) + 1;
 		    if (sessno < sesslist.nsessions) {
 			char *session = sesslist.sessions[sessno];
 			/* XXX spaces? quotes? "-load"? */