ToolStripItem.OnDragLeave(EventArgs) ToolStripItem.OnDragLeave(EventArgs) ToolStripItem.OnDragLeave(EventArgs) ToolStripItem.OnDragLeave(EventArgs) Method

定义

引发 DragLeave 事件。Raises the DragLeave event.

protected:
 virtual void OnDragLeave(EventArgs ^ e);
protected virtual void OnDragLeave (EventArgs e);
abstract member OnDragLeave : EventArgs -> unit
override this.OnDragLeave : EventArgs -> unit
Protected Overridable Sub OnDragLeave (e As EventArgs)

参数

e
EventArgs EventArgs EventArgs EventArgs

包含事件数据的 EventArgsAn EventArgs that contains the event data.

实现

注解

引发事件时,将通过委托调用事件处理程序。Raising an event invokes the event handler through a delegate. 有关详细信息, 请参阅处理和引发事件For more information, see Handling and Raising Events.

OnDragLeave 方法还允许派生类对事件进行处理而不必附加委托。The OnDragLeave method also allows derived classes to handle the event without attaching a delegate. 这是在派生类中处理事件的首选技术。This is the preferred technique for handling the event in a derived class.

继承者说明

在派生类中重写 OnDragLeave(EventArgs) 时,一定要调用基类的 OnDragLeave(EventArgs) 方法,以便已注册的委托对事件进行接收。When overriding OnDragLeave(EventArgs) in a derived class, be sure to call the base class's OnDragLeave(EventArgs) method so that registered delegates receive the event.

适用于