Hi, Hmmm....Now, that makes sense. As I understand it what you are saying is because Jaws and Window-Eyes date clear back to the Windows 3.x days and a lot of the APIs that are in Windows XP, Vista, and Windows 7 have didn't exist yet. Thus they used a video intercept to create an off-screen model of the window and tried to reconstruct the screen in speech by identifying each control by class and type. Even though newer and better APIs were added in 9x and XP the commercial screen readers still relied on their off-screen model approach rather than adopting the new APIs that could or would offer better access to the same content. Thus the reason why NVDA doesn't have problems with screen resolutions where Jaws and to some degree Window-Eyes start screwing up if you make the resolution too high. That makes sense, and explains why Jaws/Window-eyes still relie on a video intercept when clearly on Windows 7 such a thing isn't necessary as NVDA works great without one.
Cheers! On 12/30/11, Pitermach <[email protected]> wrote: > > The reason screen readers actually used video intercept was back in the > early 90's when windows and Office were taking off, there were no > standardized Access API's. By the time those got developped the > developers didn't really change well, most of them at least. > Taking JAWS and NVDA as an example, list views have a determined size > for each column, which may sometimes result in things being shortened > on-screen. Regardless of that NVDA always reads the whole thing, while > jaws will just read the abbreviated version and end with "dot dot dot", > making a blind person have to hopefully find an option to make it larger > and if not... just dealing with it as is. > Something similar happens in notepad. NVDA always has access to the > whole edit field, so the window doesn't have to be maximized or > anything. With JAWS, frequently a not maximized window will either > result in just the desktop icons or some other window being read with > mixed portions of actual text, and even if it's maximized, a baloon may > again cause that kind of thing to happen. > However I think supernova is the one that really just uses the video > intercept the most. I had problems in really large desktops of 200+ > icons where if I Just got out of what it could see it'd just say no > focus detected, same in a start menu, if scrolling is unchecked > eventually you'll just exit its visibility and hear, start no selection > as long as you're in that area. > I didn't have so many issues with NVDA or window-eyes. > > --- --- Gamers mailing list __ [email protected] If you want to leave the list, send E-mail to [email protected]. You can make changes or update your subscription via the web, at http://mail.audyssey.org/mailman/listinfo/gamers_audyssey.org. All messages are archived and can be searched and read at http://www.mail-archive.com/[email protected]. If you have any questions or concerns regarding the management of the list, please send E-mail to [email protected].
