close one window close others

[saber]

@jsulm
when i close the coreaction , the appliction output tab in qt creator shows exited with code 0. so that means other two window is also closed.

i used that in the main file.you can see that main file in top of this topic.

yes .i every widow have a close event and that event collect the file path.

[mrjj]

@saber

Very important question. ( as @jsulm asks)
is
Start s and/or corefm a;
shown on screen when u close coreaction ?

[saber]

@mrjj
yes. i also tried by minimize corefm and start and then close the coreaction. same result.

i just want to close all the window independently. close button will close ir's window,no other.

[mrjj]

@saber
They are not closing each other.
Read link @jsulm gave for info.

Seems that App thinks coreaction was last and closes app.

[saber]

@mrjj
i read the link .and i also tried the setQuitOnLastWindowClosed(false); .same

so what can i do ?

[mrjj]

@saber
Well, you must find out why.
Since doing this

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QWidget a;
    a.show();

    QWidget b;
    b.show();

    QWidget c;
    c.show();

    //    MainWindow w;
    //    w.show();   

    return app.exec();
}

Do not close at all. windows are stacked on top of each other.
So that means most likely that something in the project code does something.

Use debugger and see what is going on. please breakpoint in any closeEvent for coreaction.

[saber]

@mrjj
just asking, dubugg the closeevent?

also there is no closeEvent in coreaction.

[mrjj]

@saber
Then set break point somewhere else :)
Like destructor.
Something must happen in code.
as default sample do NOT close all 3 windows.
and its very easy to see what is going on with the call stack so
you just need to beak it somewhere and see what is going on.

[saber]

@mrjj
ok . i try to debug.
but one thought in my mind.
i think window with tray icon with fremless is the cause?
also the close mathod

QAction *QAquit=new QAction("&Quit",this);
connect(QAquit, SIGNAL(triggered()),qApp,SLOT(close()));

[saber]

i got the problem .
i am calling the qApp to close .that's the cause.

[Abrar]

@saber this looks really funny...
Don't mind.

[jsulm]

@saber said in close one window close others:

connect(QAquit, SIGNAL(triggered()),qApp,SLOT(close()));

Didn't realise it's qApp there :-)
Sometimes it is something really small/simple and is hard to see.