gdk:paintable-invalidate-size (paintable)

paintable -- a gdk:paintable object

Called by implementations of gdk:paintable subclasses to invalidate their size. As long as the size is not invalidated, paintable must return the same values for its intrinsic width, height and aspect ratio.

This function will emit the "invalidate-size" signal. If a paintable reports the :static-size flag, it must not call this function.