TransformPattern.TransformPatternInformation.CanRotate 屬性

定義

命名空間:

System.Windows.Automation

組件:

UIAutomationClient.dll

取得值，指定是否可以旋轉消費者介面自動化專案。

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

public bool CanRotate { get; }

member this.CanRotate : bool

Public ReadOnly Property CanRotate As Boolean

屬性值

Boolean

如果項目可以旋轉，則為 true；否則為 false。

範例

在下列範例中， TransformPattern 會從 AutomationElement 取得控制項模式，並接著用來旋轉 AutomationElement 。

///--------------------------------------------------------------------
/// <summary>
/// Obtains a TransformPattern control pattern from 
/// an automation element.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
/// <returns>
/// A TransformPattern object.
/// </returns>
///--------------------------------------------------------------------
private TransformPattern GetTransformPattern(
    AutomationElement targetControl)
{
    TransformPattern transformPattern = null;

    try
    {
        transformPattern =
            targetControl.GetCurrentPattern(TransformPattern.Pattern)
            as TransformPattern;
    }
    catch (InvalidOperationException)
    {
        // object doesn't support the TransformPattern control pattern
        return null;
    }

    return transformPattern;
}

'''--------------------------------------------------------------------
''' <summary>
''' Obtains a TransformPattern control pattern from 
''' an automation element.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <returns>
''' A TransformPattern object.
''' </returns>
'''--------------------------------------------------------------------
Private Function GetTransformPattern( _
ByVal targetControl As AutomationElement) As TransformPattern
    Dim transformPattern As TransformPattern = Nothing

    Try
        transformPattern = DirectCast( _
        targetControl.GetCurrentPattern(transformPattern.Pattern), _
        TransformPattern)
    Catch exc As InvalidOperationException
        ' object doesn't support the TransformPattern control pattern
        Return Nothing
    End Try

    Return transformPattern

End Function 'GetTransformPattern

///--------------------------------------------------------------------
/// <summary>
/// Calls the TransformPattern.Rotate() method for an associated 
/// automation element.
/// </summary>
/// <param name="transformPattern">
/// The TransformPattern control pattern obtained from
/// an automation element.
/// </param>
/// <param name="degrees">
/// The amount of degrees to rotate the automation element.
/// </param>
///--------------------------------------------------------------------
private void RotateElement(
    TransformPattern transformPattern, double degrees)
{
    try
    {
        if (transformPattern.Current.CanRotate)
        {
            transformPattern.Rotate(degrees);
        }
    }
    catch (InvalidOperationException)
    {
        // object is not able to perform the requested action
        return;
    }
}

'''--------------------------------------------------------------------
''' <summary>
''' Calls the TransformPattern.Rotate() method for an associated 
''' automation element.
''' </summary>
''' <param name="transformPattern">
''' The TransformPattern control pattern obtained from
''' an automation element.
''' </param>
''' <param name="degrees">
''' The amount of degrees to rotate the automation element.
''' </param>
'''--------------------------------------------------------------------
Private Sub RotateElement( _
ByVal transformPattern As TransformPattern, ByVal degrees As Double)
    Try
        If transformPattern.Current.CanRotate Then
            transformPattern.Rotate(degrees)
        End If
    Catch
        ' object is not able to perform the requested action
        Return
    End Try

End Sub

備註

物件無法移動、調整大小或旋轉，使其產生的螢幕位置完全超出其容器的座標，而且無法存取鍵盤或滑鼠。 例如，當最上層視窗完全從畫面外移動，或子物件移出容器檢視區的界限時。 在這些情況下，物件會盡可能接近要求的螢幕座標，並覆寫上方或左座標以在容器界限內。