protected override void OnControlRemoved(ControlEventArgs e)
{
LockScreenWidget widget = e.Control as LockScreenWidget;
if (widget != null)
{
widget.LockScreen = null;
}
base.OnControlRemoved(e);
}
protected override void OnControlAdded(ControlEventArgs e)
{
LockScreenWidget widget = e.Control as LockScreenWidget;
if (widget == null)
{
throw new InvalidOperationException("Only Widgets can be added to this container!");
}
widget.LockScreen = this;
base.OnControlAdded(e);
}