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TextPatternRange.GetEnclosingElement 方法

定義

傳回圍住文字範圍的最內層 AutomationElement

public:
 System::Windows::Automation::AutomationElement ^ GetEnclosingElement();
public System.Windows.Automation.AutomationElement GetEnclosingElement ();
member this.GetEnclosingElement : unit -> System.Windows.Automation.AutomationElement
Public Function GetEnclosingElement () As AutomationElement

傳回

AutomationElement

封入呼叫端的最內層項目。

範例

 private AutomationElement EnclosingElementFromSelection(AutomationElement target)
{
    // Specify the control type we're looking for, in this case 'Document'
    PropertyCondition cond = new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document);

    // target --> The root AutomationElement.
    AutomationElement textProvider = target.FindFirst(TreeScope.Descendants, cond);

    TextPattern textpatternPattern = textProvider.GetCurrentPattern(TextPattern.Pattern) as TextPattern;

    if (textpatternPattern == null)
    {
        Console.WriteLine("Root element does not contain a descendant that supports TextPattern.");
        return null;
    }
    TextPatternRange[] currentSelection = textpatternPattern.GetSelection();

    return currentSelection[0].GetEnclosingElement();
}
Private Function EnclosingElementFromSelection(ByVal target As AutomationElement) As AutomationElement
    ' Specify the control type we're looking for, in this case 'Document'
    Dim cond As PropertyCondition = New PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document)

    ' target --> The root AutomationElement.
    Dim textProvider As AutomationElement = target.FindFirst(TreeScope.Descendants, cond)

    Dim textpatternPattern As TextPattern = CType(textProvider.GetCurrentPattern(TextPattern.Pattern), TextPattern)

    If (textpatternPattern Is Nothing) Then
        Console.WriteLine("Root element does not contain a descendant that supports TextPattern.")
        Return Nothing
    End If
    Dim currentSelection As TextPatternRange() = textpatternPattern.GetSelection()
    Return currentSelection(0).GetEnclosingElement()
End Function

備註

括住 AutomationElement 的 ,通常是提供文字範圍的文字提供者。 但是,如果文字提供者支援子項目,例如表格或超連結,則封入項目可以為文字提供者的子代。

適用於