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comparison src/scrollbar-msw.c @ 664:6e99cc8c6ca5

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[xemacs-hg @ 2001-09-18 05:04:26 by ben] fileio.c: Fix various C++ compile errors in Andy's recent code. callint.c, editfns.c, emacs.c, lread.c, redisplay-x.c: Fix sign-compare warnings. scrollbar-msw.c: Fix crash under MS Windows. See comment around line 223 for explanation. font-lock.el: fix problem when you insert a comment on the line before a line of code: if we use the following char, then when you hit backspace, the following line of code turns the comment color. configure.in: Don't use -Wshadow when compiling with g++ or you get buried in silly warnings. This patch was already applied but somehow got unapplied. Stephen?
author ben
date Tue, 18 Sep 2001 05:06:57 +0000
parents af57a77cbc92
children fdefd0186b75
comparison
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663:ebdebdbf3f84 664:6e99cc8c6ca5
1 /* scrollbar implementation -- mswindows interface. 1 /* scrollbar implementation -- mswindows interface.
2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
3 Copyright (C) 1994 Amdahl Corporation. 3 Copyright (C) 1994 Amdahl Corporation.
4 Copyright (C) 1995 Sun Microsystems, Inc. 4 Copyright (C) 1995 Sun Microsystems, Inc.
5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>. 5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>.
6 Copyright (C) 2001 Ben Wing.
6 7
7 This file is part of XEmacs. 8 This file is part of XEmacs.
8 9
9 XEmacs is free software; you can redistribute it and/or modify it 10 XEmacs is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the 11 under the terms of the GNU General Public License as published by the
216 Lisp_Object ptr; 217 Lisp_Object ptr;
217 VOID_TO_LISP (ptr, v); 218 VOID_TO_LISP (ptr, v);
218 assert (OPAQUE_PTRP (ptr)); 219 assert (OPAQUE_PTRP (ptr));
219 ptr = Fgethash (ptr, Vmswindows_scrollbar_instance_table, Qnil); 220 ptr = Fgethash (ptr, Vmswindows_scrollbar_instance_table, Qnil);
220 sb = XSCROLLBAR_INSTANCE (ptr); 221 sb = XSCROLLBAR_INSTANCE (ptr);
221 win = real_window (sb->mirror, 0); 222 /* #### we're still hitting an abort here with 0 as the second
223 parameter, although only occasionally. It seems that sometimes we
224 receive events for scrollbars that don't exist anymore. I assume
225 it must happen like this: The user does something that causes a
226 scrollbar to disappear (e.g. Alt-TAB, causing recomputation of
227 everything in the new frame) and then immediately uses the mouse
228 wheel, generating scrollbar events. Both events get posted before
229 we have a chance to process them, and in processing the first, the
230 scrollbar mentioned in the second disappears. */
231 win = real_window (sb->mirror, 1);
232 if (NILP (win))
233 return;
222 frame = WINDOW_FRAME (XWINDOW (win)); 234 frame = WINDOW_FRAME (XWINDOW (win));
223 f = XFRAME (frame); 235 f = XFRAME (frame);
224 } 236 }
225 237
226 /* SB_LINEDOWN == SB_CHARLEFT etc. This is the way they will 238 /* SB_LINEDOWN == SB_CHARLEFT etc. This is the way they will