MouseButtonState 枚举

定义

指定鼠标按钮的可能状态。Specifies the possible states of a mouse button.

public enum class MouseButtonState
public enum MouseButtonState
type MouseButtonState = 
Public Enum MouseButtonState
继承
MouseButtonState

字段

Pressed 1

该按钮处于按下状态。The button is pressed.

Released 0

该按钮处于释放状态。The button is released.

示例

下面的示例演示了鼠标事件处理程序, 它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。The following example shows a mouse event handler that determines which buttons are currently pressed by checking the button state of each mouse button.

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数。The MouseButtonState enumeration specifies constants which correlate to the state of a mouse button.

适用于

另请参阅