Example on faking tap gesture on a desktop app

[Guest]

Just yesterday a team mate asked me how to fake a gesture event on a desktop, say by clicking on a button, and I quickly wrote "this":http://developer.qt.nokia.com/wiki/TapGestureExampleOnDesktop example using Qt Designer form, a push button when clicked sends a tap gesture

[alexander]

@void MainWindow::gest()
{
QTapGesture tapGes;
tapGes.setPosition(QPointF(5,5));
QList<QGesture *> tapGesTureList;
tapGesTureList.append(&tapGes);
QGestureEvent event(tapGesTureList);
QCoreApplication::sendEvent(this, &event);
}@

Are you sure that pointer on the tapGes will be alive? May be next better:

@void MainWindow::gest()
{
QTapGesture *tapGes = new QTapGesture(this);
tapGes->setPosition(QPointF(5,5));
QList<QGesture *> tapGesTureList;
tapGesTureList.append(tapGes);
QGestureEvent event(tapGesTureList);
QCoreApplication::sendEvent(this, &event);
}@

[Guest]

that example was just to show how to mimic a gesture, and also agree with you that, if required, using a pointer there will keep it alive :)

[alexander]

chetankjain, yes:) but, unfortunately, I understood, ~QGestureEvent does not delete pointers on QTapGesture and they all will be accumulated in the application memory and will be deleted only when MainWindow is destroyed.