MouseButtonEventArgs.ChangedButton 屬性

  • 參考

定義

命名空間:
System.Windows.Input
組件:
PresentationCore.dll

取得與事件關聯的按鍵。

public:
 property System::Windows::Input::MouseButton ChangedButton { System::Windows::Input::MouseButton get(); };
public System.Windows.Input.MouseButton ChangedButton { get; }
member this.ChangedButton : System.Windows.Input.MouseButton
Public ReadOnly Property ChangedButton As MouseButton

屬性值

MouseButton

按下的滑鼠按鍵。

範例

下列範例會建立滑鼠按鈕事件處理程式，根據按下的滑鼠按鈕來變更物件的色彩。 系統會 ChangedButton 檢查 屬性，以判斷按下哪一個按鈕。

private void MouseButtonDownHandler(object sender, MouseButtonEventArgs e)
{
    Control src = e.Source as Control;

    if (src != null)
    {
        switch (e.ChangedButton)
        {
            case MouseButton.Left:
                src.Background = Brushes.Green;
                break;
            case MouseButton.Middle:
                src.Background = Brushes.Red;
                break;
            case MouseButton.Right:
                src.Background = Brushes.Yellow;
                break;
            case MouseButton.XButton1:
                src.Background = Brushes.Brown;
                break;
            case MouseButton.XButton2:
                src.Background = Brushes.Purple;
                break;
            default:
                break;
        }
    }
}

Private Sub MouseButtonDownHandler(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
    Dim src As Control = TryCast(e.Source, Control)

    If src IsNot Nothing Then
        Select Case e.ChangedButton
            Case MouseButton.Left
                src.Background = Brushes.Green
            Case MouseButton.Middle
                src.Background = Brushes.Red
            Case MouseButton.Right
                src.Background = Brushes.Yellow
            Case MouseButton.XButton1
                src.Background = Brushes.Brown
            Case MouseButton.XButton2
                src.Background = Brushes.Purple
            Case Else
        End Select
    End If
End Sub

備註

類別 Mouse 提供用於判斷滑鼠狀態的其他屬性和方法。

適用於

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