Sync with trunk r63502.

[reactos.git] / win32ss / gdi / ntgdi / bitblt.c

diff --git a/win32ss/gdi/ntgdi/bitblt.c b/win32ss/gdi/ntgdi/bitblt.c
index a567290..e27c5e2 100644 (file)
--- a/win32ss/gdi/ntgdi/bitblt.c
+++ b/win32ss/gdi/ntgdi/bitblt.c
@@ -47,6 +47,12 @@ NtGdiAlphaBlend(
         return FALSE;
     }
 
         return FALSE;
     }
 

+    if ((hDCDest == NULL) || (hDCSrc == NULL))
+    {
+        EngSetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+

     TRACE("Locking DCs\n");
     ahDC[0] = hDCDest;
     ahDC[1] = hDCSrc ;
     TRACE("Locking DCs\n");
     ahDC[0] = hDCDest;
     ahDC[1] = hDCSrc ;


@@ -161,14 +167,14 @@ NtGdiBitBlt(
        return NtGdiStretchBlt(hDCDest,
                               XDest,
                               YDest,
        return NtGdiStretchBlt(hDCDest,
                               XDest,
                               YDest,

-                              Width,  
+                              Width,

                               Height,
                               hDCSrc,
                               XSrc,
                               YSrc,
                               Width,
                               Height,
                               Height,
                               hDCSrc,
                               XSrc,
                               YSrc,
                               Width,
                               Height,

-                              ROP, 
+                              ROP,

                               crBackColor);
 
     dwTRop = ROP & ~(NOMIRRORBITMAP|CAPTUREBLT);
                               crBackColor);
 
     dwTRop = ROP & ~(NOMIRRORBITMAP|CAPTUREBLT);


@@ -213,6 +219,12 @@ NtGdiTransparentBlt(
     BOOL Ret = FALSE;
     EXLATEOBJ exlo;
 
     BOOL Ret = FALSE;
     EXLATEOBJ exlo;
 

+    if ((hdcDst == NULL) || (hdcSrc == NULL))
+    {
+        EngSetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+

     TRACE("Locking DCs\n");
     ahDC[0] = hdcDst;
     ahDC[1] = hdcSrc ;
     TRACE("Locking DCs\n");
     ahDC[0] = hdcDst;
     ahDC[1] = hdcSrc ;