[Accessibility] QAccessibleEvent not being seen by screen readers

Marc Sabatella marc at outsideshore.com
Thu Jan 23 00:32:40 CET 2020

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.


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
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