From: Richard M. Stallman <rms@gnu.org>
Date: Fri, 14 Jun 1996 20:54:26 +0000 (+0000)
Subject: (win32_wnd_proc): No need to forward WM_ERASEBKGND to main thread.
X-Git-Tag: emacs-19.34~428
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=ed000659f9db71ef87860916411453011f527c1f;p=emacs.git

(win32_wnd_proc): No need to forward WM_ERASEBKGND to main thread.
---

diff --git a/src/w32fns.c b/src/w32fns.c
index 9385d4da0c6..07001736595 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -2930,10 +2930,15 @@ win32_wnd_proc (hwnd, msg, wParam, lParam)
   switch (msg) 
     {
     case WM_ERASEBKGND:
+      /* This is (always?) generated by BeginPaint, so there is no gain
+	 in forwarding this message to the main thread - it can simply
+	 erase the background before repainting. */
+#if 0
       enter_crit ();
       GetUpdateRect (hwnd, &wmsg.rect, FALSE);
       leave_crit ();
       my_post_msg (&wmsg, hwnd, msg, wParam, lParam);
+#endif
       return 1;
     case WM_PALETTECHANGED:
       /* ignore our own changes */