SBGWindow signals

Yassine

Hi all,

In my element I am creating SBGWindow from QWidgets and I would like to catch their closing signal. Does any one of you know how to do it ?

I already tried to connect to the QWidget closing signal:

SAMSONWindow = SAMSON::addWidget(windowsVector[imageNumber], "RDKit SmilesConverter", SBGWindow::Lockable);
QObject::connect(SAMSONWindow, SIGNAL(close()), this, SLOT(saveImage()));

But it didn't work because SBGWindow doesn't have close() signal. I think it will be very useful to add it.

Thanks for your help !
Yassine

Stephane

If windowsVector[imageNumber] derives from SBGWindowWidget, you have two possibilities:

The first one is to override the SBGWindowWidget::hideEvent(QHideEvent* event) function:

void MyWidget::hideEvent(SBGWindowWidget::hideEvent(QHideEvent* event)) {

    // do something

    // call the hideEvent function of the parent class

    SBGWindowWidget::hideEvent(QHideEvent* event)

}

The second one is to connect to the shown() signal of the SBGWindowWidget class (hence your derived class):

QObject::connect(windowsVector[imageNumber], SIGNAL(shown(bool)), this, SLOT(saveImage(bool)));

When the window is closed, shown(false) is emitted.

Yassine

Thank you Stephane, it works but with the second possibility that you mentioned, shown(false) is also emitted when lock button is pressed. First option is better in that sense.

Stephane

True. For some reason, locking needs the window to be hidden and shown again, so the signal is emitted.

Stephane

By the way, isn't hideEvent() called when the window is locked as well, for the same reason?

Yassine

Actually yes, I didn't test it before but hideEvent() is also called when the window is locked for the same reason as shown signal. Hmmm I thought it was possible to filter the event event->type() == QHideEvent::Hide but it seems that locking the window and hiding it (meaning closing it) has the same event type. Is it possible to distinguish these two actions ?

Stephane

Not at the moment, so I'm adding three signals to SBGWindow for 0.7.0:

closed(): emitted when the window is closed by the user
locked(bool): emitted when the window is locked or unlocked
shown(bool): emitted when the window is shown or hidden

Yassine

Perfect. Oh and maybe a flag to set the locking status of SBGWindow when it is Lockable. Thank you Stéphane !

Stephane

Done ;-). setLockedFlag(bool) and getLockedFlag() inside SBGWindow.