SelectionItemPattern.ElementSelectedEvent フィールド

  • リファレンス

定義

名前空間:
System.Windows.Automation
アセンブリ:
UIAutomationClient.dll

Select()、AddToSelection()、RemoveFromSelection() のいずれかを呼び出した結果として 1 つの項目が選択された状態になったときに発生するイベントを識別します。

public: static initonly System::Windows::Automation::AutomationEvent ^ ElementSelectedEvent;
public static readonly System.Windows.Automation.AutomationEvent ElementSelectedEvent;
 staticval mutable ElementSelectedEvent : System.Windows.Automation.AutomationEvent
Public Shared ReadOnly ElementSelectedEvent As AutomationEvent

フィールド値

AutomationEvent

例

次の例では、イベントリスナーがイベントに対して SelectionItemPattern 宣言されています。

///--------------------------------------------------------------------
/// <summary>
/// Subscribe to the selection item events of interest.
/// </summary>
/// <param name="selectionItem">
/// Automation element that supports SelectionItemPattern and is 
/// a child of a selection container that supports SelectionPattern
/// </param>
/// <remarks>
/// The events are raised by the SelectionItem elements, 
/// not the Selection container.
/// </remarks>
///--------------------------------------------------------------------
private void SetSelectionEventHandlers
    (AutomationElement selectionItem)
{
    AutomationEventHandler selectionHandler =
        new AutomationEventHandler(SelectionHandler);

    Automation.AddAutomationEventHandler(
        SelectionItemPattern.ElementSelectedEvent,
        selectionItem,
        TreeScope.Element,
        SelectionHandler);
    Automation.AddAutomationEventHandler(
        SelectionItemPattern.ElementAddedToSelectionEvent,
        selectionItem,
        TreeScope.Element,
        SelectionHandler);
    Automation.AddAutomationEventHandler(
        SelectionItemPattern.ElementRemovedFromSelectionEvent,
        selectionItem,
        TreeScope.Element,
        SelectionHandler);
}

private void SelectionHandler(object src, AutomationEventArgs e)
{
    // TODO: event handling
}

'''--------------------------------------------------------------------
''' <summary>
''' Subscribe to the selection item events of interest.
''' </summary>
''' <param name="selectionItem">
''' Automation element that supports SelectionItemPattern and is 
''' a child of a selection container that supports SelectionPattern
''' </param>
''' <remarks>
''' The events are raised by the SelectionItem elements, 
''' not the Selection container.
''' </remarks>
'''--------------------------------------------------------------------
Private Sub SetSelectionEventHandlers( _
ByVal selectionItem As AutomationElement)
    Dim selectionHandler As AutomationEventHandler = _
    New AutomationEventHandler(AddressOf OnSelectionHandler)

    Automation.AddAutomationEventHandler( _
    SelectionItemPattern.ElementSelectedEvent, _
    selectionItem, TreeScope.Element, selectionHandler)
    Automation.AddAutomationEventHandler( _
    SelectionItemPattern.ElementAddedToSelectionEvent, _
    selectionItem, TreeScope.Element, selectionHandler)
    Automation.AddAutomationEventHandler( _
    SelectionItemPattern.ElementRemovedFromSelectionEvent, _
    selectionItem, TreeScope.Element, selectionHandler)
End Sub


Private Sub OnSelectionHandler(ByVal src As Object, ByVal e As AutomationEventArgs)
    ' TODO: event handling
End Sub

注釈

この識別子は、クライアント アプリケーションUI オートメーション使用されます。 UI オートメーション プロバイダーでは、同等のフィールドSelectionItemPatternIdentifiersを使用する必要があります。

適用対象