Problem with accessibility (MSAA or UIA)

[LorenLiu]

I was trying to get the web element via MSAA (Microsoft active accessibility) or UIA (UI Automation), I already switched on web accessibility and native accessibility, however, it did not work on some machine . I guess there may be some other switches I did not turned on. Can anyone please provide some help? Many thanks.

[magreenblatt]

What OS and CEF version? What have you tried? Does it work on some machines but not others?

[LorenLiu]

My OS version is Win10 Enterprise x64 17134, and CEF version is 3.2357.1291. I tried to use the inspect.exe to access the web elements, it didn't work on my machine, but worked on some other machines.

[amaitland]

Try a supported version see https://bitbucket.org/chromiumembedded/ ... -supported

Version you are using is over 4 years old.

[LorenLiu]

Thanks, but in my case, is it possible to achieve the goal if we still use the specific old version CEF?

[amaitland]

You can test with a newer version by downloading the Sample Application from http://opensource.spotify.com/cefbuilds/index.html

[LorenLiu]

Thank you, I can have a try with the newer version, however some software can access web content in the same environment while Inspect.exe cannot for the older version, and with that software opened, Inspect.exe then can access the web content too. It looks like something is turned on. Do you have any idea how did it happen?

[magreenblatt]

See also viewtopic.php?f=6&t=15799&p=37547

[ndesktop]

"did not work on some machine" is too obscure.
If AccessibleObjectFromWindow works with CEF main window and gets you a valid IAccessible object, and AccessibleChildren works as well, then "it works".

[sinall]

Have you addressed the problem?

I'm trying to automate CefBrowserWindow with UIA. The target is third-party application. I do not know which version of CEF it uses. But I can see `Chrome Legacy Window` in Spy++.
What I want is:
1. Refresh the page
2. Get content of the page OR read the element tree
On Windows10 the Inspect.exe can see the full element tree, and I'm able to trigger refresh link and get the element texts programmatically,
But on Windows7 there is nothing under the `Chrome_RanderWIdgetHostHWND` element. Furthermore, there is a error `ObjectModel.UnderlyingObjectModel: [Error : calling getter for this property : hr=0xFFFFFF80070057 - argument error.]