Only accept matching palette

reactos/subsys/win32k/objects

diff -u -r1.45 -r1.46
--- color.c	29 Jun 2004 20:08:05 -0000	1.45
+++ color.c	2 Jul 2004 20:04:48 -0000	1.46
@@ -16,7 +16,7 @@

  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

-/* $Id: color.c,v 1.45 2004/06/29 20:08:05 navaraf Exp $ */

+/* $Id: color.c,v 1.46 2004/07/02 20:04:48 gvg Exp $ */

 #include <w32k.h>
 
 // FIXME: Use PXLATEOBJ logicalToSystem instead of int *mapping

@@ -452,9 +452,19 @@

       PalGDI = PALETTE_LockPalette(hpal);
       if (NULL != PalGDI)
 	{

-	  PALETTE_UnlockPalette(hpal);
-	  oldPal = dc->w.hPalette;
-	  dc->w.hPalette = hpal;

+          /* Is this a valid palette for this depth? */
+          if ((dc->w.bitsPerPixel <= 8 && PAL_INDEXED == PalGDI->Mode)
+              || (8 < dc->w.bitsPerPixel && PAL_INDEXED != PalGDI->Mode))
+            {
+              PALETTE_UnlockPalette(hpal);
+              oldPal = dc->w.hPalette;
+              dc->w.hPalette = hpal;
+            }
+          else
+            {
+              PALETTE_UnlockPalette(hpal);
+              oldPal = NULL;
+            }

 	}
       else
 	{