New Post: Blit images of different sizes?

        writeableBmp_Bkgrnd.Blit(
            new Rect(wherex, wherey, wbAddOnTop.PixelWidth, wbAddOnTop.PixelHeight),
            wbAddOnTop,
            new Rect(0, 0, wbAddOnTop.PixelWidth, wbAddOnTop.PixelHeight),
            WriteableBitmapExtensions.BlendMode.Alpha);