Hey there,
i am trying to override the default behavoiur of QWidget::event.
I am trying to implement some touch features.
On my widget i made sure to set setAttribute(Qt::WA_AcceptTouchEvents);
Now from the docs, i read that Qt generates for the first non-primary touchpoint also a mouse event.
I am simply trying to avoid this.
I am using a default example of QT. You can find it in the example/touch directory shipped with QT.
Here is my Code. Note that i am not calling the default behaviour of QWidget. I accept all touchevents and return true so clarify that i have handled the touchevent.
bool ScribbleArea::event(QEvent *event)
{
bool handleEvent = false;
QInputEvent* inPut = dynamic_cast<QInputEvent*>(event);
if(inPut)
{
switch (inPut ->type())
{
case QEvent::TouchBegin:
std::cout<<"ScribbleArea received TouchEvent BEGIN";
inPut->accept();
handleEvent=true;
break;
case QEvent::TouchUpdate:
//std::cout<<"ScribbleArea received TouchEvent UPDATE";
inPut->accept();
handleEvent=true;
break;
case QEvent::TouchEnd:
std::cout<<"ScribbleArea received TouchEvent END";
inPut->accept();
handleEvent=true;
break;
case QEvent::MouseButtonPress:
std::cout<<"ScribbleArea received MouseEvent PRESS";
break;
case QEvent::MouseButtonRelease:
std::cout<<"ScribbleArea received MouseEvent RELEASE";
break;
}
return handleEvent;
}
return true;
}
However, what i get is this, when i am simply touching the screen once.
Why is this? I dont want the mouse event to be generated by QT.
std::cout<<"ScribbleArea received TouchEvent";
std::cout<<"ScribbleArea received MouseEvent PRESS";
std::cout<<"ScribbleArea received TouchEvent END";
std::cout<<"ScribbleArea received MouseEvent RELEASE";
Thanks so far.
↧