MouseEventArgs.MiddleButton 屬性

定義

命名空間:

System.Windows.Input

組件:

PresentationCore.dll

會顯示滑鼠中鍵的當前狀態。

public:
 property System::Windows::Input::MouseButtonState MiddleButton { System::Windows::Input::MouseButtonState get(); };

public System.Windows.Input.MouseButtonState MiddleButton { get; }

member this.MiddleButton : System.Windows.Input.MouseButtonState

Public ReadOnly Property MiddleButton As MouseButtonState

屬性值

MouseButtonState

滑鼠中鍵目前的狀態， Pressed 是 或 Released。 沒有預設值。

範例

以下範例若屬性 MiddleButton 狀態為 Pressed，則列印訊息。

if (e.MiddleButton == MouseButtonState.Pressed)
{

    MessageBox.Show("The Middle Mouse Button is pressed");
}

If e.MiddleButton = MouseButtonState.Pressed Then

    MessageBox.Show("The Middle Mouse Button is pressed")
End If

備註

該 Mouse 類別提供額外的屬性與方法來判定滑鼠狀態。