[tkreuzer] 39987: LoadBitmapImage: - add space for 3 RGBQUADs to BITMAPINFO when biCompression is BI_BITFIELDS. Based on patch by Evgeniy Boltik <bstsoft at narod dot ru>, modified by me. - Take into account BITMAPV4/V5HEADER sizes. See issue #3708 for more details.

Author: tkreuzer
Date: Thu Mar 12 23:55:34 2009
New Revision: 39987

URL: http://svn.reactos.org/svn/reactos?rev=39987&view=rev
Log:
LoadBitmapImage: - add space for 3 RGBQUADs to BITMAPINFO when biCompression is
BI_BITFIELDS. Based on patch by Evgeniy Boltik <bstsoft at narod dot ru>, modified
by me.
- Take into account BITMAPV4/V5HEADER sizes.
See issue #3708 for more details.

Modified:
    trunk/reactos/dll/win32/user32/windows/bitmap.c

Modified: trunk/reactos/dll/win32/user32/windows/bitmap.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/user32/windows/b…
==============================================================================
--- trunk/reactos/dll/win32/user32/windows/bitmap.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/user32/windows/bitmap.c [iso-8859-1] Thu Mar 12 23:55:34 2009
@@ -449,18 +449,26 @@
       BitmapInfo = (LPBITMAPINFO)((ULONG_PTR)BitmapInfo + sizeof(BITMAPFILEHEADER));
    }
 
-   if (BitmapInfo->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
+   HeaderSize = BitmapInfo->bmiHeader.biSize;
+   if (HeaderSize == sizeof(BITMAPCOREHEADER))
    {
       BITMAPCOREHEADER* Core = (BITMAPCOREHEADER*)BitmapInfo;
       ColorCount = (Core->bcBitCount <= 8) ? (1 << Core->bcBitCount) : 0;
-      HeaderSize = sizeof(BITMAPCOREHEADER) + ColorCount * sizeof(RGBTRIPLE);
+      HeaderSize += ColorCount * sizeof(RGBTRIPLE);
    }
    else
    {
-      ColorCount = BitmapInfo->bmiHeader.biClrUsed;
-      if (ColorCount == 0 && BitmapInfo->bmiHeader.biBitCount <= 8)
-         ColorCount = 1 << BitmapInfo->bmiHeader.biBitCount;
-      HeaderSize = sizeof(BITMAPINFOHEADER) + ColorCount * sizeof(RGBQUAD);
+      if (BitmapInfo->bmiHeader.biCompression == BI_BITFIELDS)
+      {
+         HeaderSize += 3 * sizeof(RGBQUAD);
+      }
+      else
+      {
+         ColorCount = BitmapInfo->bmiHeader.biClrUsed;
+         if (ColorCount == 0 && BitmapInfo->bmiHeader.biBitCount <= 8)
+            ColorCount = 1 << BitmapInfo->bmiHeader.biBitCount;
+         HeaderSize += ColorCount * sizeof(RGBQUAD);
+      }
    }
    Data = (PVOID)((ULONG_PTR)BitmapInfo + HeaderSize);