gdi32: Implement the CopyBitmap entry point in the null driver.

dlls/gdi32/bitmap.c

@@ -65,6 +65,27 @@ DWORD nulldrv_PutImage( PHYSDEV dev, HBITMAP hbitmap, HRGN clip, BITMAPINFO *inf
     return dib_driver.pPutImage( NULL, hbitmap, clip, info, bits, src, dst, rop );
 }
 
+BOOL nulldrv_CopyBitmap( HBITMAP src, HBITMAP dst )
+{
+    BOOL ret = TRUE;
+    BITMAPOBJ *src_bmp = GDI_GetObjPtr( src, OBJ_BITMAP );
+
+    if (!src_bmp) return FALSE;
+    if (src_bmp->bitmap.bmBits)
+    {
+        BITMAPOBJ *dst_bmp = GDI_GetObjPtr( dst, OBJ_BITMAP );
+        int stride = get_dib_stride( dst_bmp->bitmap.bmWidth, dst_bmp->bitmap.bmBitsPixel );
+        dst_bmp->bitmap.bmBits = HeapAlloc( GetProcessHeap(), 0, dst_bmp->bitmap.bmHeight * stride );
+        if (dst_bmp->bitmap.bmBits)
+            memcpy( dst_bmp->bitmap.bmBits, src_bmp->bitmap.bmBits, dst_bmp->bitmap.bmHeight * stride );
+        else
+            ret = FALSE;
+        GDI_ReleaseObj( dst );
+    }
+    GDI_ReleaseObj( src );
+    return ret;
+}
+
 
 /******************************************************************************
  * CreateBitmap [GDI32.@]

dlls/gdi32/dibdrv/dc.c

@@ -391,6 +391,14 @@ static BOOL dibdrv_DeleteDC( PHYSDEV dev )
 }
 
 /***********************************************************************
+ *           dibdrv_CopyBitmap
+ */
+static BOOL dibdrv_CopyBitmap( HBITMAP src, HBITMAP dst )
+{
+    return nulldrv_CopyBitmap( src, dst );
+}
+
+/***********************************************************************
  *           dibdrv_DeleteBitmap
  */
 static BOOL dibdrv_DeleteBitmap( HBITMAP bitmap )
@@ -523,7 +531,7 @@ const struct gdi_dc_funcs dib_driver =
     NULL,                               /* pChoosePixelFormat */
     NULL,                               /* pChord */
     NULL,                               /* pCloseFigure */
-    NULL,                               /* pCopyBitmap */
+    dibdrv_CopyBitmap,                  /* pCopyBitmap */
     NULL,                               /* pCreateBitmap */
     NULL,                               /* pCreateCompatibleDC */
     dibdrv_CreateDC,                    /* pCreateDC */

dlls/gdi32/driver.c

@@ -209,11 +209,6 @@ static BOOL nulldrv_Chord( PHYSDEV dev, INT left, INT top, INT right, INT bottom
     return TRUE;
 }
 
-static BOOL nulldrv_CopyBitmap( HBITMAP src, HBITMAP dst )
-{
-    return TRUE;
-}
-
 static BOOL nulldrv_CreateBitmap( PHYSDEV dev, HBITMAP bitmap )
 {
     return TRUE;

dlls/gdi32/gdi_private.h

@@ -357,6 +357,7 @@ extern BOOL nulldrv_BeginPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 extern DWORD nulldrv_BlendImage( PHYSDEV dev, BITMAPINFO *info, const struct gdi_image_bits *bits,
                                  struct bitblt_coords *src, struct bitblt_coords *dst, BLENDFUNCTION func ) DECLSPEC_HIDDEN;
 extern BOOL nulldrv_CloseFigure( PHYSDEV dev ) DECLSPEC_HIDDEN;
+extern BOOL nulldrv_CopyBitmap( HBITMAP src, HBITMAP dst ) DECLSPEC_HIDDEN;
 extern BOOL nulldrv_EndPath( PHYSDEV dev ) DECLSPEC_HIDDEN;
 extern INT  nulldrv_ExcludeClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 extern INT  nulldrv_ExtSelectClipRgn( PHYSDEV dev, HRGN rgn, INT mode ) DECLSPEC_HIDDEN;