ContentElement.MouseWheel 事件
定义
在鼠标指针位于此元素上并且用户滚动鼠标滚轮时发生。Occurs when the user rotates the mouse wheel while the mouse pointer is over this element.
public:
virtual event System::Windows::Input::MouseWheelEventHandler ^ MouseWheel;public event System.Windows.Input.MouseWheelEventHandler MouseWheel;member this.MouseWheel : System.Windows.Input.MouseWheelEventHandler Public Custom Event MouseWheel As MouseWheelEventHandler 事件类型
实现
注解
焦点或鼠标捕获优先于鼠标指针所在的位置;因此，如果 MouseWheel 从焦点或捕获的元素接收事件，则鼠标指针实际上可能位于另一个元素上。Focus or mouse capture take precedence over where the mouse pointer is; therefore, if you receive the MouseWheel event from a focused or captured element, the mouse pointer might actually be over another element.
此事件将为 Mouse.MouseWheel 此类创建附加事件的别名，因此 MouseWheel 当 ContentElement 继承为基元素时，它是类成员列表的一部分。This event creates an alias for the Mouse.MouseWheel attached event for this class, so that MouseWheel is part of the class members list when ContentElement is inherited as a base element. 附加到事件的事件处理程序 MouseWheel 附加到基础 Mouse.MouseWheel 附加事件，并接收相同的事件数据实例。Event handlers that are attached to the MouseWheel event are attached to the underlying Mouse.MouseWheel attached event and receive the same event data instance.
路由事件信息Routed Event Information
| 标识符字段Identifier field | MouseWheelEvent |
| 路由策略Routing strategy | 冒泡Bubbling |
| 委托Delegate | MouseWheelEventHandler |
对应的隧道事件为 PreviewMouseWheel 。The corresponding tunneling event is PreviewMouseWheel.
重写 OnMouseWheel 以在派生类中实现此事件的类处理。Override OnMouseWheel to implement class handling for this event in derived classes.