public static void ShowBlocking(Rect rectangle, Color color, TimeSpan duration)
{
Show(() =>
{
window?.Close();
window = new OverlayRectangleWindow(rectangle, color, duration);
window.ShowDialog();
});
}
private void TimerTick(object sender, EventArgs e)
{
var timer = (DispatcherTimer)sender;
timer.Tick -= this.TimerTick;
timer.Stop();
this.Close();
window = null;
}