[Solved] How to detect QMainWindow destroy signal?

zither

Dear all,

@class myWin : public QMainWindow
{
Q_OBJECT
myWin (QWidget *parent=0);
......
......
}

class Main : public QMainWindow
{
.......
void Main::Function()
{
myWin *dialog = new myWin(this);
dialog->show();
connect(myWin,SIGNAL(destroyed()),this,SLOT(mySLOT())); //No signal is emitted after dialog is closed
}
...
}@

Thanks

Eddy

On what action do you want the dialog be "destroyed" clicking the x button in the titlebar?

Maybe the signal "rejected":http://doc.qt.nokia.com/4.7/qdialog.html#rejected is what you want.

zither

bq. On what action do you want the dialog be “destroyed” clicking the x button in the titlebar?Maybe the signal rejected [doc.qt.nokia.com] is what you want.

Yes, clicking x button in the titlebar.

But, I can't get rejected because myWin class in inheritance to QMainWindow. It occurs just as dialog but not QDialog class.

@class myWin : public QMainWindow@

How can I do that?

Thanks

Eddy

Ok, i see now it's a QMainwindow. If I were you I would name it differently like MyGoalMainwindow. Your code will be easier to read.

Did you use a qDebug to see if your slot is called?

zither

Yes, I tested with qDebug(). NO call to mySlot.

I also try with destroyed(QObject*))...

How can I do that?

Thanks

giesbert

Hi zither,

the point is that the main window will not be destroyed. destroyed will be emitted, if the object is deleted, not if the window is closed. I f you want the object really to be destroyed, then you can set the attribute:

@
myWin::myWin (QWidget *parent)
....
{
....
setAtrtribute(Qt::WA_DeleteOnClose, true);
}
@

Eddy

try
@myWin *dialog = new myWin(this);
dialog->setAttribute(Qt::WA_DeleteOnClose, true);
dialog->show(); @

Edit : Gerolf is faster ;)