[PATCH] DrawDibDraw flag handling

[Peter Riocreux]

I got a lot of messages from this function about a particular flag
(DDF_BACKGROUNDPAL) not being handled, so I tried to handle it.

The MSDN docs are at
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_drawdibdraw.asp

I am coming to this completely cold, so I may be completely off target
here, so if anyone can comment on whether I have done this right. I
suspect that there needs to be explicit support for DDF_SAME_HDC, but
I didn't really understand what it was wanting ....

(Patch is against CVS from this AM (GMT)

Index: dlls/msvideo/drawdib.c
===================================================================
RCS file: /home/wine/wine/dlls/msvideo/drawdib.c,v
retrieving revision 1.21
diff -u -r1.21 drawdib.c
--- dlls/msvideo/drawdib.c      3 Jun 2004 23:19:51 -0000       1.21
+++ dlls/msvideo/drawdib.c      14 Oct 2004 14:46:47 -0000
@@ -311,7 +311,7 @@
     whdd = MSVIDEO_GetHddPtr(hdd);
     if (!whdd) return FALSE;

-    if (wFlags & ~(DDF_SAME_HDC | DDF_SAME_DRAW | DDF_NOTKEYFRAME | DDF_UPDATE | DDF_DONTDRAW))
+    if (wFlags & ~(DDF_SAME_HDC | DDF_SAME_DRAW | DDF_NOTKEYFRAME | DDF_UPDATE | DDF_DONTDRAW | DDF_BACKGROUNDPAL))
         FIXME("wFlags == 0x%08lx not handled\n", (DWORD)wFlags);

if (!lpBits)
@@ -362,7 +362,10 @@
         }
     }
     if (!(wFlags & DDF_DONTDRAW) && whdd->hpal)
-        SelectPalette(hdc, whdd->hpal, FALSE);
+      if ((wFlags & DDF_BACKGROUNDPAL) && ! (wFlags & DDF_SAME_HDC))
+       SelectPalette(hdc, whdd->hpal, TRUE);
+      else
+       SelectPalette(hdc, whdd->hpal, FALSE);

if (!(StretchBlt(whdd->hdc, xDst, yDst, dxDst, dyDst, whdd->hMemDC, xSrc, ySrc, dxSrc, dySrc, SRCCOPY)))
         ret = FALSE;