gtk/widget.go
func (v *Widget) SetStateFlags(stateFlags StateFlags, clear bool) {
	C.gtk_widget_set_state_flags(v.native(), C.GtkStateFlags(stateFlags), gbool(clear))
}
func (v *Widget) SetStateFlags(stateFlags StateFlags, clear bool) {
	C.gtk_widget_set_state_flags(v.native(), C.GtkStateFlags(stateFlags), gbool(clear))
}
// SetStateFlags is a wrapper around gtk_widget_set_state_flags().