[nfbcs] JAWS and NVDA

[Nicole Torcolini]

Hahaha, that's okay. Intellectual  discussions are just as welcome as
answers, especially since there are not always answers. BTW, although I do
not all of the fine grained details, I do know a little about why IE and
Firefox work differently with screen readers.

Nicole

-----Original Message-----
From: nfbcs [mailto:nfbcs-bounces at nfbnet.org] On Behalf Of Steve Jacobson
via nfbcs
Sent: Saturday, August 02, 2014 11:25 AM
To: Nicole Torcolini via nfbcs
Subject: Re: [nfbcs] JAWS and NVDA

Nicole,

You have stumbled upon a followup to your last note.  How do we measure
accessibility when the same software works differently with different screen
readers.  From what I know, there are just differences in how screen readers
get the information that they get.  NVDA, being newer, tends to depend
heavily on MSAA and UIA to get information.  JFW and Window-Eyes, being
older, will sometimes depend on those same elements but also on their
off-screen models of what is being displayed.  Sometimes these approaches
cause information to be spoken that NVDA can't.  I've also seen cases where,
probably due to UIA problems, NVDA goes silent on some unusual web pages
that Window-Eyes and JFW handle at least well enough to get by.  If you add
to this the fact that FireFox will sometimes work differently with screen
readers than Internet Explorer, you can see that there is a whole tree of
variables.  
Fortunately, this doesn't matter most of the time, but I see it being a
greater and greater issue as I see more modern web-based applications where
I work.  

I see that you did figure out how to make JFW work with the specific
software that was causing problems, but there are times when this approach
may not solve the problem.  On my job, I still use some software that cannot
be easily used or used at all with NVDA but works fine with both Window-Eyes
and JFW.

I'm really not giving you any answers, am I?  Sorry.

Best regards,

Steve Jacobson

On Fri, 1 Aug 2014 17:26:53 -0700, Nicole Torcolini via nfbcs wrote:

>Does anyone know of any good resources that explain how JAWS and NVDA work?
>I am trying out a program right now. JAWS does not go to all of the 
>controls when pressing tab, but NVDA does. NVDA does not read out all 
>of the labels, such as on checkboxes and radio buttons, but JAWS. Both 
>of them kind of work, but not to the point that I can use either one 
>without having to do extra stuff, like use the JAWS cursor when using JAWS.
> 
>Nicole
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