TreeView.OnNodeMouseHover(TreeNodeMouseHoverEventArgs) 方法

定义

引发 NodeMouseHover 事件。Raises the NodeMouseHover event.

protected:
 virtual void OnNodeMouseHover(System::Windows::Forms::TreeNodeMouseHoverEventArgs ^ e);
protected virtual void OnNodeMouseHover (System.Windows.Forms.TreeNodeMouseHoverEventArgs e);
abstract member OnNodeMouseHover : System.Windows.Forms.TreeNodeMouseHoverEventArgs -> unit
override this.OnNodeMouseHover : System.Windows.Forms.TreeNodeMouseHoverEventArgs -> unit
Protected Overridable Sub OnNodeMouseHover (e As TreeNodeMouseHoverEventArgs)

参数

e
TreeNodeMouseHoverEventArgs

包含事件数据的 TreeNodeMouseHoverEventArgsThe TreeNodeMouseHoverEventArgs that contains the event data.

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.

OnNodeMouseHover 方法还允许派生类对事件进行处理而不必附加委托。The OnNodeMouseHover 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 OnNodeMouseHover(TreeNodeMouseHoverEventArgs) 时,一定要调用基类的 OnNodeMouseHover(TreeNodeMouseHoverEventArgs) 方法,以便已注册的委托对事件进行接收。When overriding OnNodeMouseHover(TreeNodeMouseHoverEventArgs) in a derived class, be sure to call the base class's OnNodeMouseHover(TreeNodeMouseHoverEventArgs) method so that registered delegates receive the event.

适用于