MouseButtonState 枚举

定义

命名空间:

System.Windows.Input

程序集:

PresentationCore.dll

指定鼠标按钮的可能状态。

public enum class MouseButtonState

public enum MouseButtonState

type MouseButtonState = 

Public Enum MouseButtonState

继承

Object

ValueType

Enum

MouseButtonState

字段

Pressed	1	该按钮处于按下状态。
Released	0	该按钮处于释放状态。

示例

以下示例演示了一个鼠标事件处理程序，该处理程序通过检查每个鼠标按钮的按钮状态来确定当前按下的按钮。

private void MouseDownHandler(object sender, MouseEventArgs e)
{
    if (e.RightButton == MouseButtonState.Pressed)
    {
        MessageBox.Show("The Right Mouse Button is pressed");
    }

    if (e.LeftButton == MouseButtonState.Pressed)
    {
        MessageBox.Show("The Left Mouse Button is pressed");
    }

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

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

    if (e.XButton1 == MouseButtonState.Pressed)
    {
        MessageBox.Show("The XButton1 Mouse Button is pressed");
    }

    if (e.XButton2 == MouseButtonState.Pressed)
    {
        MessageBox.Show("The XButton2 Mouse Button is pressed");
    }
}

Private Sub MouseDownHandler(ByVal sender As Object, ByVal e As MouseEventArgs)
    If e.RightButton = MouseButtonState.Pressed Then
        MessageBox.Show("The Right Mouse Button is pressed")
    End If

    If e.LeftButton = MouseButtonState.Pressed Then
        MessageBox.Show("The Left Mouse Button is pressed")
    End If

    If e.MiddleButton = MouseButtonState.Pressed Then

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

    If e.XButton1 = MouseButtonState.Pressed Then
        MessageBox.Show("The XButton1 Mouse Button is pressed")
    End If

    If e.XButton2 = MouseButtonState.Pressed Then
        MessageBox.Show("The XButton2 Mouse Button is pressed")
    End If
End Sub

注解

MouseButtonState枚举指定与鼠标按钮状态关联的常量。

另请参阅

• MouseEventArgs
• MouseAction