gdiplus: Add stub implementations of GdipCreateHalftonePalette and GdipImageForceValidation.

dlls/gdiplus/gdiplus.spec

@@ -95,7 +95,7 @@
 @ stdcall GdipCreateFromHWNDICM(long ptr)
 @ stdcall GdipCreateHBITMAPFromBitmap(ptr ptr long)
 @ stub GdipCreateHICONFromBitmap
-@ stub GdipCreateHalftonePalette
+@ stdcall GdipCreateHalftonePalette()
 @ stub GdipCreateHatchBrush
 @ stdcall GdipCreateImageAttributes(ptr)
 @ stdcall GdipCreateLineBrush(ptr ptr long long long ptr)
@@ -405,7 +405,7 @@
 @ stdcall GdipGetWorldTransform(ptr ptr)
 @ stdcall GdipGraphicsClear(ptr long)
 @ stub GdipGraphicsSetAbort
-@ stub GdipImageForceValidation
+@ stdcall GdipImageForceValidation(ptr)
 @ stdcall GdipImageGetFrameCount(ptr ptr ptr)
 @ stdcall GdipImageGetFrameDimensionsCount(ptr ptr)
 @ stdcall GdipImageGetFrameDimensionsList(ptr ptr long)

dlls/gdiplus/graphics.c

@@ -3287,3 +3287,10 @@ GpStatus WINGDIPAPI GdipTransformPointsI(GpGraphics *graphics, GpCoordinateSpace
 
     return NotImplemented;
 }
+
+HPALETTE WINGDIPAPI GdipCreateHalftonePalette(void)
+{
+    FIXME("\n");
+
+    return NULL;
+}

dlls/gdiplus/image.c

@@ -1529,3 +1529,10 @@ GpStatus WINGDIPAPI GdipRecordMetafileFileNameI(GDIPCONST WCHAR* fileName, HDC h
 
     return NotImplemented;
 }
+
+GpStatus WINGDIPAPI GdipImageForceValidation(GpImage *image)
+{
+    FIXME("%p\n", image);
+
+    return Ok;
+}