WorkflowDesignerMessageFilter.OnMouseHover(MouseEventArgs) 方法

定义

命名空间:

System.Workflow.ComponentModel.Design

程序集:

System.Workflow.ComponentModel.dll

当鼠标指针暂停在对象上方时发生。

protected:
 virtual bool OnMouseHover(System::Windows::Forms::MouseEventArgs ^ eventArgs);

protected virtual bool OnMouseHover (System.Windows.Forms.MouseEventArgs eventArgs);

abstract member OnMouseHover : System.Windows.Forms.MouseEventArgs -> bool
override this.OnMouseHover : System.Windows.Forms.MouseEventArgs -> bool

Protected Overridable Function OnMouseHover (eventArgs As MouseEventArgs) As Boolean

参数

eventArgs

MouseEventArgs

一个 MouseEventArgs，包含有关事件的信息。

返回

Boolean

如果消息已处理，则为 true；否则为 false。

示例

下面的代码示例演示如何重写 OnMouseHover 方法来返回 false，以便设计器结构中的其他组件可以处理此方法。

此代码示例摘自 DesignerShell.cs 文件中的基本设计器宿主 SDK 示例。 有关详细信息，请参阅 Basic Designer Hosting。

protected override bool OnMouseHover(MouseEventArgs eventArgs)
{
    //Allow other components to process this event by not returning true.
    mouseDown = false;
    return false;
}

Protected Overrides Function OnMouseHover(ByVal eventArgs As MouseEventArgs) As Boolean
    ' Allow other components to process this event by not returning true.
    mouseDown = False
    Return False
End Function

注解

当鼠标指针悬停在对象上时发生 OnMouseHover。

另请参阅

• 基本Designer托管