private void SetCommandBarButtonImage(CommandBarButton button, string id) { var image = Globals.ThisAddIn.GetCommandBitmap(id + "_sm"); if (image == null) { return; } Bitmap picture, mask; BitmapToPictureAndMask(image, out picture, out mask); button.Picture = PictureConvert.ImageToPictureDisp(picture); button.Mask = PictureConvert.ImageToPictureDisp(mask); }