本文整理汇总了C#中System.Windows.DependencyObject.GetDragEnterHandlers方法的典型用法代码示例。如果您正苦于以下问题：C# DependencyObject.GetDragEnterHandlers方法的具体用法？C# DependencyObject.GetDragEnterHandlers怎么用？C# DependencyObject.GetDragEnterHandlers使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Windows.DependencyObject的用法示例。
在下文中一共展示了DependencyObject.GetDragEnterHandlers方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: AddDragEnterHandler
internal static void AddDragEnterHandler(DependencyObject element, CustomDragEventHandler handler, bool handledEventsToo)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (handler == null)
{
throw new ArgumentNullException("handler");
}
CustomExtendedRoutedEventHandlerCollection<CustomDragEventHandler, CustomDragEventArgs> dragEnterHandlers = element.GetDragEnterHandlers();
CustomExtendedRoutedEventHandlerCollection<CustomDragEventHandler, CustomDragEventArgs> handlers2 = dragEnterHandlers ?? new CustomExtendedRoutedEventHandlerCollection<CustomDragEventHandler, CustomDragEventArgs>((h, a) => h(element, a));
handlers2.Add(handler, handledEventsToo);
if (handlers2 != dragEnterHandlers)
{
element.SetValue(DragEnterHandlerProperty, handlers2);
}
}示例2: RemoveDragEnterHandler
internal static void RemoveDragEnterHandler(DependencyObject element, CustomDragEventHandler handler)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (handler == null)
{
throw new ArgumentNullException("handler");
}
CustomExtendedRoutedEventHandlerCollection<CustomDragEventHandler, CustomDragEventArgs> dragEnterHandlers = element.GetDragEnterHandlers();
if (dragEnterHandlers != null)
{
dragEnterHandlers.Remove(handler);
}
}示例3: AddDragEnterHandler
/// <summary>
/// Adds a handler to the attached DragEnter event.
/// </summary>
/// <param name="element">The DependencyObject to attach an event handler for.</param>
/// <param name="handler">The event handler.</param>
/// <param name="handledEventsToo">A value Indicating whether to invoke the handler if the event is handled.</param>
internal static void AddDragEnterHandler(DependencyObject element, DragEventHandler handler, bool handledEventsToo)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (handler == null)
{
throw new ArgumentNullException("handler");
}
ExtendedRoutedEventHandlerCollection<DragEventHandler, DragEventArgs> originalHandlers = element.GetDragEnterHandlers();
ExtendedRoutedEventHandlerCollection<DragEventHandler, DragEventArgs> handlers = originalHandlers ?? new ExtendedRoutedEventHandlerCollection<DragEventHandler, DragEventArgs>((h, a) => h(element, a));
handlers.Add(handler, handledEventsToo);
if (handlers != originalHandlers)
{
element.SetValue(DragEnterHandlerProperty, handlers);
}
}