Does NVDA depend on IAccessible API

[isidorn]

We are having a discussion on the VS Code since we want to improve the screen reader detection.
Currently accessibility clients of Chrome use legacy IAccessible MSAA or the new IAccessible2 UIAutomation.
We would like to drop support for auto detecting screen readers that support the legacy IAccessible MSAA.

Does NVDA depend on the legacy IAccessibleAPI?

Thanks a lot
Isidor

[Brian1Gaff]

I think that most screenreaders keep it as a fall back for some purposes, as I see it mentioned in log files here and there. Brian

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Sent: Thursday, June 09, 2022 3:07 PM Subject: [nvaccess/nvda] Does NVDA depend on IAccessible API (Issue #13782) We are having a discussion on the VS Code since we want to improve the screen reader detection. Currently accessibility clients of Chrome use legacy IAccessible MSAA or the new IAccessible2 UIAutomation. We would like to drop support for auto detecting screen readers that support the legacy IAccessible MSAA. Does NVDA depend on the legacy `IAccessible`API? Thanks a lot Isidor -- Reply to this email directly or view it on GitHub: #13782 You are receiving this because you are subscribed to this thread. Message ID: ***@***.***>

[isidorn]

Thanks. But that means that NVDA does use IAccessible2?
@feerrenrut can you maybe confirm when you find time. Thanks you

[lukaszgo1]

@isidorn I'm not sure your question can be answered as it stands. You wrote:

Currently accessibility clients of Chrome use legacy IAccessible MSAA or the new IAccessible2 UIAutomation.

That is not really true. IAccessible2 and UIAutomation are two separate API's. For more explanation see this SO question

Perhaps if you would tell us

1. How exactly you're detecting screen readers now?
2. What you're trying to change and
3. What problem you're trying to solve

we would be able to provide a more complete answer.
If you're asking about IAccessible2, then yes, NVDA, and for that matter all Windows screen readers except Narrator, rely on it to access Electron based applications, as it offers access far superior to what UIA allows.