I'm trying to get notified when the Window title of an MS Edge browser window changes using UIAutomation but the property changed event is not firing as I would expect.
The code works for IE, Chrome and FireFox and the only noticeable difference I can see when inspecting the window using Accessibility Insights is that they implement the IUIAutomationLegacyIAccessiblePattern interface and MS Edge does not but as I can see the property changing I would still expect the event to fire.
Before I go looking for a work around e.g. using SetWindowHook to trigger the title change event I'm wondering if there is a small change I can make to get MS Edge working?
Here is a how I'm creating the handler
IUIAutomationElement rootElement = _uIA.GetRootElement();
IUIAutomationCacheRequest cacheRequest = _uIA.CreateCacheRequest();
cacheRequest.AddProperty(UIA_NamePropertyId);
IUIAutomationCondition windowCondition = _uIA.CreatePropertyCondition(UIA_NativeWindowHandlePropertyId, handle);
IUIAutomationElement windowElement = rootElement.FindFirstBuildCache(TreeScope.TreeScope_Descendants, windowCondition, cacheRequest);
if (windowElement == null)
return false;
int[] props = { UIA_NamePropertyId };
_uIA.AddPropertyChangedEventHandler(windowElement, TreeScope.TreeScope_Element, cacheRequest, this, props);
The code works fine for getting the window and I can see the title chaging on the windowElement.CacheName it just never fires the HandlePropertyChangedEvent.
To clarify I'm using a wrapper around uiautomationclient and not the .net automation framework
