gtk/window.go
func (v *Window) SetKeepBelow(setting bool) {
	C.gtk_window_set_keep_below(v.native(), gbool(setting))
}
func (v *Window) SetKeepBelow(setting bool) {
	C.gtk_window_set_keep_below(v.native(), gbool(setting))
}
// SetKeepBelow is a wrapper around gtk_window_set_keep_below().