internal static void AddQueryContinueDragHandler(DependencyObject element, CustomQueryContinueDragEventHandler handler, bool handledEventsToo)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (handler == null)
{
throw new ArgumentNullException("handler");
}
CustomExtendedRoutedEventHandlerCollection<CustomQueryContinueDragEventHandler, CustomQueryContinueDragEventArgs> queryContinueDragHandlers = element.GetQueryContinueDragHandlers();
CustomExtendedRoutedEventHandlerCollection<CustomQueryContinueDragEventHandler, CustomQueryContinueDragEventArgs> handlers2 = queryContinueDragHandlers ?? new CustomExtendedRoutedEventHandlerCollection<CustomQueryContinueDragEventHandler, CustomQueryContinueDragEventArgs>((h, a) => h(element, a));
handlers2.Add(handler, handledEventsToo);
if (handlers2 != queryContinueDragHandlers)
{
element.SetValue(QueryContinueDragHandlerProperty, handlers2);
}
}
internal static void RemoveQueryContinueDragHandler(DependencyObject element, CustomQueryContinueDragEventHandler handler)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (handler == null)
{
throw new ArgumentNullException("handler");
}
CustomExtendedRoutedEventHandlerCollection<CustomQueryContinueDragEventHandler, CustomQueryContinueDragEventArgs> queryContinueDragHandlers = element.GetQueryContinueDragHandlers();
if (queryContinueDragHandlers != null)
{
queryContinueDragHandlers.Remove(handler);
}
}
internal static void AddQueryContinueDragHandler(DependencyObject element, CustomQueryContinueDragEventHandler handler)
{
AddQueryContinueDragHandler(element, handler, false);
}