[tkreuzer] 43846: [WIN32K] Lock the DIB palette in NtGdiSetDIBitsToDeviceInternal instead of passing NULL to EXLATEOBJ_vInitialize. Fixes LightBox Editor regression (bug 4913 )

Author: tkreuzer
Date: Fri Oct 30 15:02:42 2009
New Revision: 43846

URL: http://svn.reactos.org/svn/reactos?rev=43846&view=rev
Log:
[WIN32K]
Lock the DIB palette in NtGdiSetDIBitsToDeviceInternal instead of passing NULL to
EXLATEOBJ_vInitialize. Fixes LightBox Editor regression (bug 4913 )

Modified:
    trunk/reactos/subsystems/win32/win32k/objects/dibobj.c

Modified: trunk/reactos/subsystems/win32/win32k/objects/dibobj.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/ob…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1] Fri Oct 30
15:02:42 2009
@@ -444,7 +444,7 @@
     SIZEL SourceSize;
     EXLATEOBJ exlo;
     PPALETTE ppalDDB = NULL, ppalDIB = NULL;
-    HPALETTE DDBPalette, DIBPalette = NULL;
+    HPALETTE hpalDDB, hpalDIB = NULL;
     ULONG DIBPaletteType;
 
     if (!Bits) return 0;
@@ -478,13 +478,13 @@
     }
 
     /* Use destination palette obtained from the DC by default */
-    DDBPalette = pDC->ppdev->devinfo.hpalDefault;
+    hpalDDB = pDC->ppdev->devinfo.hpalDefault;
 
     /* Try to use hDIBPalette if it exists */
     pSurf = pDC->dclevel.pSurface;
     if (pSurf && pSurf->hDIBPalette)
     {
-        DDBPalette = pSurf->hDIBPalette;
+        hpalDDB = pSurf->hDIBPalette;
     }
 
     pDestSurf = pSurf ? &pSurf->SurfObj : NULL;
@@ -526,7 +526,7 @@
     }
 
     /* Obtain destination palette */
-    ppalDDB = PALETTE_LockPalette(DDBPalette);
+    ppalDDB = PALETTE_LockPalette(hpalDDB);
     if (!ppalDDB)
     {
         SetLastWin32Error(ERROR_INVALID_HANDLE);
@@ -534,11 +534,21 @@
         goto Exit;
     }
 
-    DIBPalette = BuildDIBPalette(bmi, (PINT)&DIBPaletteType);
-    if (!DIBPalette)
+    /* Create a palette for the DIB */
+    hpalDIB = BuildDIBPalette(bmi, (PINT)&DIBPaletteType);
+    if (!hpalDIB)
     {
         SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES);
         Status = STATUS_NO_MEMORY;
+        goto Exit;
+    }
+
+    /* Lock the DIB palette */
+    ppalDIB = PALETTE_LockPalette(hpalDIB);
+    if (!ppalDDB)
+    {
+        SetLastWin32Error(ERROR_INVALID_HANDLE);
+        Status = STATUS_UNSUCCESSFUL;
         goto Exit;
     }
 
@@ -573,7 +583,7 @@
 
     if (pSourceSurf) EngUnlockSurface(pSourceSurf);
     if (hSourceBitmap) EngDeleteSurface((HSURF)hSourceBitmap);
-    if (DIBPalette) PALETTE_FreePaletteByHandle(DIBPalette);
+    if (hpalDIB) PALETTE_FreePaletteByHandle(hpalDIB);
     DC_UnlockDc(pDC);
 
     return ret;