pub(in crate::gui) fn on(&self) -> &WindowEventsAll {
		if !self.hwnd.is_null() {
			panic!("Cannot add event after window creation.");
		}
		&self.user_events
	}
/// User events can be overriden; only the last one is executed.

User events can be overriden; only the last one is executed.
User events can be overriden ; only the last one is executed .
pub(in crate::gui) fn on(&self) -> &WindowEventsAll {
		if !self.hwnd.is_null() {
			panic!("Cannot add event after window creation.");
		}
		&self.user_events
	}
pub ( in crate :: gui ) fn on ( & self ) -> & WindowEventsAll { if ! self . hwnd . is_null ( ) { panic ! ( " " ) ; } & self . user_events }
User events can be overriden; only the last one is executed.
User events can be overriden ; only the last one is executed .
&self
&self