Form.OnResizeBegin(EventArgs) Form.OnResizeBegin(EventArgs) Form.OnResizeBegin(EventArgs) Form.OnResizeBegin(EventArgs) Method

定义

引发 ResizeBegin 事件。Raises the ResizeBegin event.

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

参数

e
EventArgs EventArgs EventArgs EventArgs

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

注解

ResizeBegin将仅引发事件,如果窗体的CanRaiseEvents属性设置为trueThe ResizeBegin event will only be raised if the form's CanRaiseEvents property is set to true.

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.

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

适用于

另请参阅