Open Mainwindow from a Dialog

[chandradeo]

I want to accept decryption key from a Dialog which opens before launching Mainwindow. I want to know how to open a dialog before a Mainwindow opens. So that i will accept key from dialog and pass it to mainwindow variable. Please suggest.

[jsulm]

@chandradeo Simply use QDialog::exec before you create and show main window:

int main()
{
    QDialog dialog();
    dialog.exec();

    MyMainWindow w;
    w.show();
}