This function recomputes the styles for all widgets that use a
particular Gtk.Settings object. (There is one Gtk.Settings object
per Gdk.Screen, see gtk_settings_get_for_screen()); It 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 default font size
set by the operating system changes. Note that this function
doesn’t affect widgets that have a style set explicitly on them
with gtk_widget_set_style().
This function recomputes the styles for all widgets that use a particular Gtk.Settings object. (There is one Gtk.Settings object per Gdk.Screen, see
gtk_settings_get_for_screen()); It 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 default font size set by the operating system changes. Note that this function doesn’t affect widgets that have a style set explicitly on them withgtk_widget_set_style().