StylusDevice.InAir 属性

定义

命名空间:

System.Windows.Input

程序集:

PresentationCore.dll

获取触笔是否位于数字化仪上但尚未连接数字化仪。

public:
 property bool InAir { bool get(); };

public bool InAir { get; }

member this.InAir : bool

Public ReadOnly Property InAir As Boolean

属性值

Boolean

如果触笔位于数字化仪上但尚未连接数字化仪，则为 true；否则为 false。 默认值为 false。

示例

以下示例演示 属性 InAir 。

private void OnMouseMove(object sender, MouseEventArgs e)
{
    StylusDevice myStylusDevice = e.StylusDevice;

    if (myStylusDevice != null)
    {
        if (myStylusDevice.InAir)
        {
            textbox1.Text = "stylus moves in air";
        }
        else
        {
            textbox1.Text = "stylus moves with pen down";
        }
    }
}

Private Sub OnMouseMove(ByVal sender As Object, _
                        ByVal e As MouseEventArgs)

    Dim myStylusDevice As StylusDevice
    myStylusDevice = e.StylusDevice
    If Not IsNothing(myStylusDevice) Then
        If myStylusDevice.InAir = True Then
            textbox1.Text = "stylus moves in air"
        Else
            textbox1.Text = "stylus moves with pen down"
        End If
    End If
End Sub