private static void OnCursorChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var oldCursor = (CoreCursor)e.OldValue;
var newCursor = (CoreCursor)d.GetValue(CursorProperty);
if (oldCursor == null)
{
var handler = new CursorDisplayHandler();
handler.Attach((FrameworkElement)d);
SetCursorDisplayHandler(d, handler);
}
else
{
var handler = GetCursorDisplayHandler(d);
if (newCursor == null)
{
handler.Detach();
SetCursorDisplayHandler(d, null);
}
else
{
handler.UpdateCursor();
}
}
}
public static void SetCursorDisplayHandler(DependencyObject d, CursorDisplayHandler value) => d.SetValue(CursorDisplayHandlerProperty, value);
