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Thread: Why my application quit?

  1. #1
    Join Date
    Dec 2009
    Location
    Shenzhen,China
    Posts
    21
    Thanks
    1
    Qt products
    Qt4
    Platforms
    MacOS X Windows

    Default Why my application quit?

    I meet an problem in mac, after i run an model dialog, the application quit!, I note that i have set the parent of the dialog to NULL, maybe it's the reason that why the application quit, because if i set the parent to some widget, it won't. so i want to know the exact reason. and it work good on Window, althought the parent is NULL.

    QFileDialog *pImportDlg = new QFileDialog;
    QDesktopWidget* desktop = QApplication::desktop();
    pImportDlg->move((desktop->width() - pImportDlg->width())/2, (desktop->height() - pImportDlg->height())/2);
    pImportDlg->setFileMode(QFileDialog::ExistingFiles);

    if (QDialog::Accepted == pImportDlg->exec())
    {
    // do something
    }

    Appreciate for any point!

  2. #2
    Join Date
    Dec 2009
    Location
    Shenzhen,China
    Posts
    21
    Thanks
    1
    Qt products
    Qt4
    Platforms
    MacOS X Windows

    Default Re: Why my application quit?

    I have solve it by my self.
    The key is that tha application will quit when the last window closed!, i have call setQuitOnLastWindowClosed and set it to false.
    Thank you for concern!

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