UIElement.OnMouseRightButtonDown(MouseButtonEventArgs) 方法

定义

当某个未处理的 MouseRightButtonDown 路由事件在其路由中到达派生自此类的某个元素时调用。Invoked when an unhandled MouseRightButtonDown routed event reaches an element in its route that is derived from this class. 实现此方法可为此事件添加类处理。Implement this method to add class handling for this event.

protected:
 virtual void OnMouseRightButtonDown(System::Windows::Input::MouseButtonEventArgs ^ e);
protected virtual void OnMouseRightButtonDown (System.Windows.Input.MouseButtonEventArgs e);
abstract member OnMouseRightButtonDown : System.Windows.Input.MouseButtonEventArgs -> unit
override this.OnMouseRightButtonDown : System.Windows.Input.MouseButtonEventArgs -> unit
Protected Overridable Sub OnMouseRightButtonDown (e As MouseButtonEventArgs)

参数

e
MouseButtonEventArgs

包含事件数据的 MouseButtonEventArgsThe MouseButtonEventArgs that contains the event data. 事件数据报告称已按下鼠标右键。The event data reports that the right mouse button was pressed.

注解

MouseRightButtonDown 事件显示为以冒泡路线旅行,但实际以间接方式传播。The MouseRightButtonDown event appears to travel a bubbling route but actually travels in an indirect way. Mouse.MouseDown 是冒泡路由的基础事件,事件路由中的每个 UIElement 使用相同的处理来引发直接路由事件 MouseRightButtonDownMouse.MouseDown is the underlying event that is bubble routed, and each UIElement along the event route uses identical handling to raise the direct routed event MouseRightButtonDown. 虽然您可以将 MouseRightButtonDown 事件标记为为此元素的目的进行处理,但已处理状态并不会与事件路由中的其他元素保持。Although you can mark the MouseRightButtonDown event as handled for purposes of this element, the handled state does not perpetuate to other elements along the event route. 但是,你可能需要将事件标记为已处理,以防止调用常规实例处理程序(未指定 handledEventsToo)。However, you might want to mark the event as handled in order to prevent general instance handlers (those that did not specify handledEventsToo) from being invoked.

UIElement 中的常规鼠标事件处理的默认实现侦听 Mouse.MouseDown 并将其转换为适当的本地事件。The default implementation for general mouse event handling in UIElement listens for Mouse.MouseDown and converts it to an appropriate local event. 如果要重写此逻辑,必须创建派生类。If you want to override this logic, you must create a derived class. 在派生类的静态构造函数中,为 Mouse.MouseDown注册替代类处理程序。In the static constructor of your derived class, register an alternative class handler for Mouse.MouseDown. 不能通过重写 OnMouseRightButtonDown更改 UIElement 的鼠标处理行为。You cannot change the mouse handling behavior of UIElement by overriding OnMouseRightButtonDown.

或者,您可以重写此方法,以便为特定的鼠标状态更改事件处理。Alternatively, you can override this method in order to change event handling for a specific mouse state. 是否选择调用基实现取决于方案。Whether you choose to call the base implementation depends on your scenario. 如果无法调用 base,则会禁用上级类上对该鼠标事件的默认输入处理,这也会要求调用 OnMouseRightButtonDownFailing to call base disables default input handling for that mouse event on ancestor classes that also expect to invoke OnMouseRightButtonDown. 例如,你可以在派生类中派生 Control 和重写 OnMouseRightButtonDown,而无需调用 base;但是,此替代禁用控件上的上下文菜单服务,这是 Control 默认行为的组成部分。For example, you can derive from Control and override OnMouseRightButtonDown in your derived class without calling base; however, this override disables the context menu services on your control, which are part of the Control default behavior.

适用于