[Accessibility] QAccessibleEvent not being seen by screen readers

[Marc Sabatella]

Apparently I’m wrong about the value change event not being generated at
all.  Even though it doesn’t show in Accessibility Insights, I *was* able
to write a JAWS script to detect them and read what I need.  Not sure
what’s going on exactly, but I’m glad to have the start of a solution.

On Wed, Jan 22, 2020 at 4:32 PM Marc Sabatella <marc at outsideshore.com>
wrote:

> As mentioned, I've managed to make considerable progress on the Linux
> side.  By generating value change events from MuseScore (whether that's
> "right" or not) and having a script listen for them, Orca reads happily.
> Maybe I'll revisit that, but for now I'm moving on to Windows.
>
> The same code works for NVDA, and it works for JAWS *if* we build with Qt
> 5.9.  But I still am having no luck with Qt 5.12.  As far as I can tell, no
> events are generated when I call updateAccessibility(), whether I use
> value, description, or name changes.  So I'm thinking maybe there is
> something I need to to enable UIA at all, kind of like how I needed to set
> QT_LINUX_ACCESSIBILITY_ALWAYS_ON to get anything happening on Linux?  I
> also know there is a distinction between "value value" and "range value",
> and the former is what should be generated, maybe there is some mixup here.
>
> Another possible clue: even the spin boxes don't read their contents when
> I change them in this environment (Qt 5.12 + JAWS).  JAW does notice on
> each change but just says "blank".  That's true in a 5.9 build too.
>
> Marc
>
> On Sun, Jan 19, 2020 at 3:34 PM Samuel Thibault <
> samuel.thibault at ens-lyon.org> wrote:
>
>> Marc Sabatella, le dim. 19 janv. 2020 15:27:47 -0700, a ecrit:
>> > But it does seem that somehow there is something missed here.  Some
>> sort of
>> > general "navigatable object" that would be expected to change its value
>> or
>> > description in response to navigation commands.  Like, a more
>> generalized
>> > version of a document, or a table.
>>
>> That's why I advise you to discuss about it with Joanmarie to see how to
>> implement it best.
>>
>> Samuel
>>
>
>
> --
> Marc Sabatella
> marc at outsideshore.com
>
-- 
Marc Sabatella
marc at outsideshore.com
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