ContentElement.ReleaseMouseCapture 方法

定義

如果這個項目保有滑鼠捕捉,則釋放捕捉。Releases the mouse capture, if this element held the capture.

public:
 virtual void ReleaseMouseCapture();
public void ReleaseMouseCapture ();
abstract member ReleaseMouseCapture : unit -> unit
override this.ReleaseMouseCapture : unit -> unit
Public Sub ReleaseMouseCapture ()

實作

範例

下列處理常式會根據滑鼠按鍵狀態來捕捉或釋放滑鼠捕捉。The following handler captures or releases mouse capture according to mouse button states. 此範例示範如何使用已捕捉的滑鼠移動做為替代用途,而不是將滑鼠指標移到 UIUI中。The example shows how to use captured mouse movement for alternative purposes other than moving the mouse pointer in the UIUI.

private void MouseDownHandler(object sender, MouseButtonEventArgs e)
{
    ContentElement el = (ContentElement)sender;
    if (!el.IsEnabled) return;
    e.Handled = true;
    el.CaptureMouse();
    _point = e.MouseDevice.GetPosition(el); 
}

private void MouseUpHandler(object sender, MouseButtonEventArgs e)
{
    ContentElement el = (ContentElement)sender;
    if (!el.IsEnabled) return;
    e.Handled = true;
    el.ReleaseMouseCapture();
}
Private Sub MouseDownHandler(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
    Dim el As ContentElement = CType(sender, ContentElement)
    If Not el.IsEnabled Then
        Return
    End If
    e.Handled = True
    el.CaptureMouse()
    _point = e.MouseDevice.GetPosition(el)
End Sub

Private Sub MouseUpHandler(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
    Dim el As ContentElement = CType(sender, ContentElement)
    If Not el.IsEnabled Then
        Return
    End If
    e.Handled = True
    el.ReleaseMouseCapture()
End Sub

備註

如果這個專案不包含 capture,則呼叫這個方法不會有任何作用。If this element did not hold the capture, calling this method has no effect. 呼叫這個方法之前,請考慮檢查 IsMouseCaptured 的值。Consider checking the value of IsMouseCaptured before you call this method.

適用於

另請參閱