[Accessibility] QLabels not read by JAWS screenreader (Qt 5.4/Win 8.1)

Marcel lists at nightsoul.org
Wed Feb 18 12:45:28 CET 2015

> Am 17.02.2015 um 11:23 schrieb Frederik Gladhorn <frederik.gladhorn at theqtcompany.com>:
> On Monday, February 16, 2015 05:51:30 PM Marcel wrote:
>> [Crosspost from the qt-project.org forums, didn’t receive a reply there
>> within a week.]
>> Hello!
>> I’m trying to make our application accessible with a screenreader. A blind
>> colleague uses JAWS, therefore I use that for testing. Reading widgets that
>> expect user input works quite well so far, but I’m having some trouble
>> elsewhere:
>> QLabels are not read at all. JAWS has a hotkey that should “read the whole
>> window” (JAWS-Key + B), but for our application that just reads the window
>> title and nothing else. Everything I can focus directly via tabbing is read
>> as well – which is of course not desirable with labels.
>> Probably related: We have some QWizards set up. There, the QWizardPage title
>> and description texts are used to convey most of the information concerning
>> the wizard page’s purpose. Those texts are not read at all as well.
>> I have a minimal test case application[0] that has a label (not read), a
>> button and a QLineEdit (accessibleName read fine for both). The button
>> opens a wizard that has title and description (not read) and no further
>> input widgets.
>> Do accessible applications usually have all necessary information in input
>> widget descriptions (therefore not needing labels) or am I doing something
>> wrong?
>> This is Qt 5.4 on Windows 8.1 with JAWS 16.
> QLabel should provide accessibility information (it is represented by 
> QAccessibleDisplay in qtbase/src/widgets/accessible/simplewidgets.h).
> It would be interesting to know if it works with NVDA (I suspect that it does, 
> looking at Steve's testing. The issue seems to be that we expose the 
> information in a way that JAWS either ignores it or doesn't see it at all, so 
> it's a bug in Qt.
> It would be great if you file a bug report (https://bugreports.qt.io) so we 
> keep track of it.
> Does anyone know if JAWS makes use of IAccessible2 at all? Maybe that is the 
> reason for it not working.

I have filed the report here: https://bugreports.qt.io/browse/QTBUG-44537
NVDA doesn’t read that label as well when pressing NVDA+B („read whole window“, results in *only* the window title being read) but announces it’s accessibleName and description upon mouseover.


> Cheers,
> Frederik
>> Greetings,
>> Marcel
>> [0] https://filetrain.de/a11ytest.zip
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