MouseButton 列舉

定義

命名空間:

System.Windows.Input

組件:

PresentationCore.dll

定義值，以指定滑鼠裝置上的按鍵。

public enum class MouseButton

public enum MouseButton

type MouseButton = 

Public Enum MouseButton

繼承

Object

ValueType

Enum

MouseButton

欄位

Left	0	滑鼠左鍵。
Middle	1	滑鼠中鍵。
Right	2	滑鼠右鍵。
XButton1	3	第一個延伸的滑鼠鍵。
XButton2	4	第二個延伸的滑鼠鍵。

範例

下列範例會建立事件處理程式，這個事件處理程式會使用 MouseButton 列舉來判斷按下哪一個MouseDown按鈕。 根據按下的按鈕，引發事件的控件背景會變更。

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

另請參閱

• Mouse
• MouseEventArgs
• MouseButtonEventArgs
• MouseButtonState
• MouseAction