class MyWindow : public WithMyWindowLayout<TopWindow> {
	StatusBar				status;
...
	TimeCallback			timer;
	String				remotely_updated_string;

	void refreshStatus(){	// timer runs this at 100 ms intervals
		if(!IsForeground()) return;
		status = remotely_updated_string;
	}

...
	MyWindow(){
...
		timer.Set(-100,[&](){ refreshStatus(); });
...
	}

	~MyWindow(){
...
		timer.Kill();
...
	}

   }

};