Alexandre Julliard : comctl32: Avoid losing the color masks in CreateMappedBitmap.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d8241b8db67cde8f70e6bea3694686d84023ca6e
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=d8241b8db67cde8f70e6bea3694686d84023ca6e

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Wed Nov 16 20:26:30 2011 +0100

comctl32: Avoid losing the color masks in CreateMappedBitmap.

---

 dlls/comctl32/commctrl.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/dlls/comctl32/commctrl.c b/dlls/comctl32/commctrl.c
index 76ab3a1..c0d0043 100644
--- a/dlls/comctl32/commctrl.c
+++ b/dlls/comctl32/commctrl.c
@@ -796,7 +796,10 @@ CreateMappedBitmap (HINSTANCE hInstance, INT_PTR idBitmap, UINT wFlags,
         nColorTableSize = (1 << lpBitmap->biBitCount);
     else
         nColorTableSize = 0;
-    nSize = lpBitmap->biSize + nColorTableSize * sizeof(RGBQUAD);
+    nSize = lpBitmap->biSize;
+    if (nSize == sizeof(BITMAPINFOHEADER) && lpBitmap->biCompression == BI_BITFIELDS)
+        nSize += 3 * sizeof(DWORD);
+    nSize += nColorTableSize * sizeof(RGBQUAD);
     lpBitmapInfo = GlobalAlloc (GMEM_FIXED, nSize);
     if (lpBitmapInfo == NULL)
 	return 0;