public static bool IsDescendantOf(DependencyObject element, DependencyObject parent)
{
while (element != null)
{
if (element == parent)
{
return(true);
}
element = LVTreeHelper.GetParent(element);
}
return(false);
}
private void PtzController_Loaded(object sender, RoutedEventArgs e)
{
if (_directionItemsControl != null)
{
List <FrameworkElement> elementList = LVTreeHelper.FindVisualChildren <FrameworkElement>(_directionItemsControl, "DirectionController");
if (elementList == null || elementList.Count == 0)
{
return;
}
//注册方向控制按钮点击事件
foreach (FrameworkElement element in elementList)
{
element.MouseLeftButtonDown -= Item_MouseLeftButtonOperate;
element.MouseLeftButtonUp -= Item_MouseLeftButtonOperate;
element.MouseLeftButtonDown += Item_MouseLeftButtonOperate;
element.MouseLeftButtonUp += Item_MouseLeftButtonOperate;
}
}
}
