...
	if(bar.IsToolBar()) {
		bar.Add(btn_run.SetLabel("Run"), btn_run.AddFrameSize(30,20));

	}

...
	if(bar.IsToolBar()) {
		bar.Add(btn_run.SetLabel("Run"), btn_run.AddFrameSize(30,20))
		.Key(K_CTRL_R)
		.Help("Run your something");

	}