ToolStripItem.OnParentChanged(ToolStrip, ToolStrip) ToolStripItem.OnParentChanged(ToolStrip, ToolStrip) ToolStripItem.OnParentChanged(ToolStrip, ToolStrip) ToolStripItem.OnParentChanged(ToolStrip, ToolStrip) Method

定义

引发 ParentChanged 事件。Raises the ParentChanged event.

protected:
 virtual void OnParentChanged(System::Windows::Forms::ToolStrip ^ oldParent, System::Windows::Forms::ToolStrip ^ newParent);
protected virtual void OnParentChanged (System.Windows.Forms.ToolStrip oldParent, System.Windows.Forms.ToolStrip newParent);
abstract member OnParentChanged : System.Windows.Forms.ToolStrip * System.Windows.Forms.ToolStrip -> unit
override this.OnParentChanged : System.Windows.Forms.ToolStrip * System.Windows.Forms.ToolStrip -> unit
Protected Overridable Sub OnParentChanged (oldParent As ToolStrip, newParent As ToolStrip)

参数

oldParent
ToolStrip ToolStrip ToolStrip ToolStrip

项的原始父级。The original parent of the item.

newParent
ToolStrip ToolStrip ToolStrip ToolStrip

项的新父级。The new parent of the item.

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.

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

适用于