TabletDevice.ActiveSource 屬性

  • 參考

定義

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

取得報告目前 Tablet 裝置輸入的 PresentationSource。

public:
 virtual property System::Windows::PresentationSource ^ ActiveSource { System::Windows::PresentationSource ^ get(); };
public override System.Windows.PresentationSource ActiveSource { [System.Security.SecurityCritical] get; }
public override System.Windows.PresentationSource ActiveSource { get; }
[<get: System.Security.SecurityCritical>]
member this.ActiveSource : System.Windows.PresentationSource
member this.ActiveSource : System.Windows.PresentationSource
Public Overrides ReadOnly Property ActiveSource As PresentationSource

屬性值

PresentationSource

報告目前 Tablet 裝置輸入的 PresentationSource。

屬性
SecurityCriticalAttribute

範例

下列程式代碼範例示範 ActiveSource 屬性。

PresentationSource myPresentationSource = myTabletDevice.ActiveSource;

if (null != myPresentationSource)
{
    textbox1.AppendText("ActiveSource.RootVisual: " + myPresentationSource.RootVisual.ToString() + "\n");
}
else
{
    textbox1.AppendText("ActiveSource: null\n");
}

Dim myPresentationSource As PresentationSource = myTabletDevice.ActiveSource

If Not IsNothing(myPresentationSource) Then
    textbox1.AppendText("ActiveSource.RootVisual: " & myPresentationSource.RootVisual.ToString() & vbCrLf)
Else
    textbox1.AppendText("ActiveSource: null" & vbCrLf)
End If

適用於