QTouchEvent : No TouchBegin if I don't Move or Up
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Hi all,
I have a problem handling QTouchEvent.- I call QWidget::setAttribute(Qt::WA_AcceptTouchEvents);
- I receive QEvent::TouchBegin QEvent::TouchUpdate QEvent::TouchEnd
But, if i touch the screen without moving at all, I receive the touchBegin only when I up my finger ( and i receive the TouchEnd event just after)
How can I do to receive the TouchBegin event once I touch the screen?Thank you for your answers.
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What platform, which Qt version, what kind of hardware? Normally you should receive the TouchBegin immediately, what you describe is indeed quite odd.
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I work on Windows Seven with Qt4.6.3 and NVIDIA Quadro 600.
I notice that I had the same problem with Windows Seven event but I solved it using TWF_WANTPALM flag.
Thank you. -
Up!
I haven't found any correct solution!Thanks
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Same problem here, tried 5.x.x till 5.2.1 versions, Panasonic CF-C1, Windows 7 64bit.
Thanks -
Ok, sorry, I didn't saw BenjaminLong BenjaminLong solution.
Then I confirm this will work after QMainWindow::show :
@
WId wid = my_mindow->winId();
if ( !RegisterTouchWindow((HWND)wid,TWF_WANTPALM) )
{
qWarning() << "RegisterTouchWindow failed !";
}
@TY
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Yes but this is a solution for Windows API.
For Qt, I've only used :
@setAttribute(Qt::WA_AcceptTouchEvents);@@6120 : You have the correct behaviour I descrided with Qt?
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I'm using Qt ... on Windows ...
For my case I couldn't get any contextMenuEvent.
I have checked the received event of my widget and I had the same strange behaviour as you described in your first post...
adding TWF_WANTPALM on the native handle of my mainwindow solved it, now I receive TouchEvents immediately and contextMenuEvents are working fine.I also noticed some dificulties with drag and drop, I have to check If that is solving the problem.
Regards