public MainWindow()
{
InitializeComponent();
_captureElement = this;
Mouse.AddGotMouseCaptureHandler((DependencyObject)_captureElement, stackPanel1_GotLostMouseCapture);
Mouse.AddLostMouseCaptureHandler((DependencyObject)_captureElement, stackPanel1_GotLostMouseCapture);
Mouse.Capture(_captureElement);
MouseCaptured = Mouse.Captured != null;
}
private void CalendarHelper_Loaded(object sender, RoutedEventArgs e)
{
Mouse.AddGotMouseCaptureHandler(Target, GlobalMouseCapture);
}