Minimum frame size in Windows

[Juanma Barranquero]

There's an old hack in src/w32fns.c to avoid the user resizing an
Emacs frame below the minimum tracking size (else the user can, for
example, make a window showing only a fraction of the window caption,
which looks ugly).

However, the hack is not working. I propose fixing it with the
following straightforward patch.

                   /L/e/k/t/u


Index: src/w32fns.c
===================================================================
RCS file: /cvsroot/emacs/emacs/src/w32fns.c,v
retrieving revision 1.281
diff -u -2 -r1.281 w32fns.c
--- src/w32fns.c        1 Dec 2006 13:04:59 -0000       1.281
+++ src/w32fns.c        12 Dec 2006 16:18:44 -0000
@@ -3707,6 +3707,6 @@
                   and Y positions as well.  */

-               lppos->cx -= wdiff;
-               lppos->cy -= hdiff;
+               lppos->cx = max (lppos->cx - wdiff, GetSystemMetrics 
(SM_CXMINTRACK));
+               lppos->cy = max (lppos->cy - hdiff, GetSystemMetrics 
(SM_CYMINTRACK));

                if (wp.showCmd != SW_SHOWMAXIMIZED
@@ -3732,7 +3732,4 @@

    case WM_GETMINMAXINFO:
-      /* Hack to correct bug that allows Emacs frames to be resized
-        below the Minimum Tracking Size.  */
-      ((LPMINMAXINFO) lParam)->ptMinTrackSize.y++;
      /* Hack to allow resizing the Emacs frame above the screen size.
         Note that Windows 9x limits coordinates to 16-bits.  */