Even if IA2 is changed to support this flag then it's not reliable way of detecting AT since AT might not support this flag or AT might not support IA2 at all.
Thanks. Alex. On Tue, May 25, 2010 at 10:46 PM, Andres Gonzalez <[email protected]> wrote: > WM_GETOBJECT is NOT a reliable way of detecting AT either, since it may be > triggered by apps and even device drivers that don't have anything to do > with AT, so you are guarantied false positives even with the best > heuristics. I'm very interested in developing a reliable handshake mechanism > with AT, and would love to hear from others with ideas/proposals on this > respect. Perhaps we can take this task for the next edition of IA2 in this > list, or by a subgroup of interested parties, and bring back a concrete > proposal to the general group. > > Thanks, > > --Andres. > > > > ________________________________ > From: [email protected] > [mailto:[email protected]] On Behalf Of > Pete Brunet > Sent: Monday, May 24, 2010 4:18 PM > To: James Teh > Cc: IAccessible2 mailing list > Subject: Re: [Accessibility-ia2] screen reader present flag > > Thanks Jamie, I'll have to check with the architects to see if they would > have any issues with blocking. If I can block then I might also be able to > lazily call into the secondary thread to build the tree as needed. -Pete > === > James Teh wrote: > > On 25/05/2010 8:37 AM, Pete Brunet wrote: > > > Thanks Jamie, [using WM_GETOBJECT to dynamically enable accessibility] may > be a problem for the case where the app has > multiple threads and a secondary thread needs to be called by the window > proc to participate in the building of the accessibility tree. Is it > acceptable to block the UI thread? > > > I don't see why this is any different to creating the tree in the same > thread. Either way, it will block the UI thread, as the WM_GETOBJECT > message needs to return the requested accessible object. Can you shorten > the setup time by creating parts of the tree lazily only when requested? > > Jamie > > > _______________________________________________ > Accessibility-ia2 mailing list > [email protected] > https://lists.linux-foundation.org/mailman/listinfo/accessibility-ia2 > > _______________________________________________ Accessibility-ia2 mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/accessibility-ia2
