WindowPattern.WindowOpenedEvent Field

Identifies the event that is raised when a window is opened.

Namespace: System.Windows.Automation
Assembly: UIAutomationClient (in uiautomationclient.dll)

public static readonly AutomationEvent WindowOpenedEvent
public static final AutomationEvent WindowOpenedEvent
public static final var WindowOpenedEvent : AutomationEvent
Not applicable.

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

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;
    }
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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