[Qt-interest] QGestureRecognizer and TouchBegin Events

[Thiago Macieira]

Em Quarta-feira, 1 de Dezembro de 2010, às 16:23:31, Sean Hayes escreveu:
> On Mon, Nov 29, 2010 at 8:10 PM, Sean Hayes <sean.t.hayes at vanderbilt.edu> 
wrote:
> > On Mon, Nov 29, 2010 at 2:18 PM, Thiago Macieira <thiago at kde.org> wrote:
> >> Em Segunda-feira, 29 de Novembro de 2010, às 17:41:23, Sean Hayes 
escreveu:
> >>> When a TouchBegin event is received by a widget that is registered to
> >>> receive a gesture, the appropriate QGestureRecognizer receives
> >>> QTouchEvents. If additional fingers are added or removed to the the
> >>> surface, the QTouchEvent's touch points are updated accordingly. Also,
> >> 
> >> Which platform is that? We've just fixed this issue for the XInput2 hack
> >> (used in MeeGo 1.2).
> > 
> > I am using Windows 7 on a Dell XT2.
> 
> Are you suggesting that this is a issue with Windows7 not passing
> information about new touch point to the Qt application?

No.

I said only that, on X11 with the XInput2 hack for the support of multiple 
points in touch, there was a bug related to the lifting of fingers. That's the 
only platform where I know anything about touch.

I don't know anything about Windows 7, which is why I remained silent after 
your reply.

However, we know by indirect evidence that the touch and gesture API does give 
information about losing contact on touch points. Since you're not getting 
them, this is either a problem with the platform (driver, functionality, etc.) 
or a bug in Qt.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
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