Receiving application foreground events

[daou]

Is there a way in QtS60 to easily capture application foreground events? In S60 it can be done via AppUi::HandleForegroundEventL() but I don't know if it's possible to overload the AppUi handler of a Qt application.

I only need foreground events for my own application, so using CFgrObserver is a little overkill with its SwEvent capability.

I tried using QWidget::changeEvent, but I only get QEvent::ActivationChange events without the ability to distinguish between foreground and background events.

QEvent::ApplicationActivate seems like the logical event to use in this case, but I never observe it in the QWidget::changeEvent slot. I am using a custom widget that draws on a full screen.

[Fuzzbender]

QWidget::changeEvent is only for change events (see documentation http://doc.trolltech.com/4.5/qwidget.html#changeEvent).

How about adding an eventFilter into your application / widget and trying to handle ApplicationActivate event there?

Cheers,
FB

[daou]

Thanks for the reply.

The QWidget did not receive the ApplicationActivate/Deactivate events in eventFilter(). I derived a class from QApplication and installed the event filter there, and it gets the events during foreground/background as it should. So it's working now.

[djagadish7]

This http://wiki.forum.nokia.com/index.ph...Qt_for_Symbian elaborates.