gdk:paintable-invalidate-contents (paintable)

paintable -- a gdk:paintable object

Called by implementations of a gdk:paintable subclass to invalidate their contents. Unless the contents are invalidated, implementations must guarantee that multiple calls of the gdk:paintable-snapshot function produce the same output.

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