Sets the shape mask of window to the union of shape masks for all children of window, ignoring the shape mask of window itself. Contrast with Window.mergeChildShapes which includes the shape mask of window in the masks to be merged.
Sets the shape mask of window to the union of shape masks for all children of window, ignoring the shape mask of window itself. Contrast with Window.mergeChildShapes which includes the shape mask of window in the masks to be merged.