gtk:style-context-reset-widgets (screen)

screen -- a gdk:screen object

This function recomputes the styles for all widgets under a particular screen. This is useful when some global parameter has changed that affects the appearance of all widgets, because when a widget gets a new style, it will both redraw and recompute any cached information about its appearance. As an example, it is used when the color scheme changes in the related gtk:settings object.