WindowPattern.WindowOpenedEvent Field

public: static initonly System::Windows::Automation::AutomationEvent ^ WindowOpenedEvent;

public static readonly System.Windows.Automation.AutomationEvent WindowOpenedEvent;

 staticval mutable WindowOpenedEvent : System.Windows.Automation.AutomationEvent

Public Shared ReadOnly WindowOpenedEvent As AutomationEvent 

Field Value

Examples

In the following example, event listeners are declared and an AutomationEventHandler delegate is specified for WindowOpenedEvent and WindowClosedEvent events.

///--------------------------------------------------------------------
/// <summary>
/// Register for events of interest.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
///--------------------------------------------------------------------
private void RegisterForAutomationEvents(
 AutomationElement targetControl)
{
 AutomationEventHandler eventHandler = 
 new AutomationEventHandler(OnWindowOpenOrClose);
 Automation.AddAutomationEventHandler(
 WindowPattern.WindowClosedEvent, 
 targetControl, TreeScope.Element, eventHandler);
 Automation.AddAutomationEventHandler(
 WindowPattern.WindowOpenedEvent, 
 targetControl, TreeScope.Element, eventHandler);
}

///--------------------------------------------------------------------
/// <summary>
/// AutomationEventHandler delegate.
/// </summary>
/// <param name="src">Object that raised the event.</param>
/// <param name="e">Event arguments.</param>
///--------------------------------------------------------------------
private void OnWindowOpenOrClose(object src, AutomationEventArgs e)
{
 // Make sure the element still exists. Elements such as tooltips
 // can disappear before the event is processed.
 AutomationElement sourceElement;
 try
 {
 sourceElement = src as AutomationElement;
 }
 catch (ElementNotAvailableException)
 {
 return;
 }
 
 if (e.EventId == WindowPattern.WindowOpenedEvent)
 {
 // TODO: event handling
 return;
 }
 if (e.EventId == WindowPattern.WindowClosedEvent)
 {
 // TODO: event handling
 return;
 }
}

'''------------------------------------------------------------------------
''' <summary>
''' Register for events of interest.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
'''------------------------------------------------------------------------
Private Sub RegisterForEvents(ByVal targetControl As AutomationElement)
 Dim eventHandler As AutomationEventHandler = AddressOf OnWindowOpenOrClose
 Automation.AddAutomationEventHandler(WindowPattern.WindowClosedEvent, _
 targetControl, TreeScope.Element, eventHandler)
 Automation.AddAutomationEventHandler(WindowPattern.WindowOpenedEvent, _
 targetControl, TreeScope.Element, eventHandler)
End Sub

'''------------------------------------------------------------------------
''' <summary>
''' AutomationEventHandler delegate.
''' </summary>
''' <param name="src">Object that raised the event.</param>
''' <param name="e">Event arguments.</param>
'''------------------------------------------------------------------------
Private Sub OnWindowOpenOrClose(ByVal src As Object, _
 ByVal e As AutomationEventArgs)
 ' Make sure the element still exists. Elements such as tooltips
 ' can disappear before the event is processed.
 Dim sourceElement As AutomationElement
 Try
 sourceElement = DirectCast(src, AutomationElement)
 Catch
 Return
 End Try

 If e.EventId Is WindowPattern.WindowOpenedEvent Then
 ' TODO: event handling
 Return
 End If
 If e.EventId Is WindowPattern.WindowClosedEvent Then
 ' TODO: event handling
 Return
 End If
End Sub

Remarks

This identifier is used by UI Automation client applications. UI Automation providers should use the equivalent field in WindowPatternIdentifiers.