pub fn add_window_event_handler<F>(&mut self, window_id: WindowId, handler: F) -> Result<(), InvalidWindowId>
	where
		F: 'static + FnMut(&mut WindowHandle, &mut WindowEvent, &mut EventHandlerControlFlow),
	{
		let window = self
			.windows
			.iter_mut()
			.find(|x| x.id() == window_id)
			.ok_or(InvalidWindowId { window_id })?;

		window.event_handlers.push(Box::new(handler));
		Ok(())
	}
/// Add a window-specific event handler.
Add a window-specific event handler.
Add a window - specific event handler .
pub fn add_window_event_handler<F>(&mut self, window_id: WindowId, handler: F) -> Result<(), InvalidWindowId>
	where
		F: 'static + FnMut(&mut WindowHandle, &mut WindowEvent, &mut EventHandlerControlFlow),
	{
		let window = self
			.windows
			.iter_mut()
			.find(|x| x.id() == window_id)
			.ok_or(InvalidWindowId { window_id })?;
		window.event_handlers.push(Box::new(handler));
		Ok(())
	}
pub fn add_window_event_handler < F > ( & mut self , window_id : WindowId , handler : F ) -> Result < ( ) , InvalidWindowId > where F : ' static + FnMut ( & mut WindowHandle , & mut WindowEvent , & mut EventHandlerControlFlow ) , { let window = self . windows . iter_mut ( ) . find ( | x | x . id ( ) == window_id ) . ok_or ( InvalidWindowId { window_id } ) ? ; window . event_handlers . push ( Box :: new ( handler ) ) ; Ok ( ( ) ) }
Add a window-specific event handler.
Add a window - specific event handler .
&mut self
window_id
WindowId
handler
F