protected override void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
if (this.IsHooked)
{
IUIAutomation uia = this.IUIAutomation;
if (uia != null)
{
uia.RemoveStructureChangedEventHandler(this.Element, this);
}
}
}
}
base.Dispose(disposing);
}
/////////////////////////////////////////////////////////////////////////////////////////////////
//
// RemoveSampleEventHandler()
//
// Perform all cleanup of objects that we initialized on startup in the background thread.
//
// Runs on the background thread.
//
/////////////////////////////////////////////////////////////////////////////////////////////////
void RemoveSampleEventHandler()
{
// If we successfully added an event handler earlier, remove it now. The
// handler must be removed on the same thread on which it was added.
if (_fAddedEventHandler)
{
// Depending on the timing of events generated around the time we remove
// the event handler, an event can arrive at the handler after a successful
// call to remove the event handler. So set the flag here to prevent our
// event handler from taking any more action if futher calls to our event
// handler are made.
_fAddedEventHandler = false;
try
{
_automation.RemoveStructureChangedEventHandler(_elementBrowser, this);
}
catch
{
// An exception can be thrown here if the browser window has already been closed.
}
}
}
