What is the best way to popup an option dialog before the program starts?

[Dauntless]

I would like to know what's the best way to popup a dialog, from which the user could select an option before the main window of the program starts.
I can’t just show both, because the MainWindow needs to know the option selected in the first dialog to work properly, so I need to freeze somehow the process until the user selected the option in the first dialog.
I was wondering what's the best approach to make this work? Use qthreads, qtimer, use some QCoreApplication commands or maybe there is an ever better way.

I’m a novice and I don’t know yet the proper way to do it, thank you if you can help me.

[sarode]

Hello,

I know this well in Qt 3.3.x. You can use this example application under Qt 3.3.3 ..

/usr/share/doc/qt-devel-3.3.3/examples/i18n/

You may get some help!

Regards,

[sunil.thaha]

You could do something like this

int main( ... ) {
   QApplication app( ... );
 
   OptionsDialog dlg;
   [...]
   if(  dlg.exec() != QDailog::Accepted ) 
                 return 0;             // Terminate if Options not set or may be set defaults 
 
   // Get the Options, could use a structure for that 
    Options options = dlg.options();
    MainWindow w;
    w.setOptions( options ); 
    w.show();
    app.exec();
}

int main( ... ) {
   QApplication app( ... );
   
   OptionsDialog dlg;
   [...]
   if(  dlg.exec() != QDailog::Accepted ) 
                 return 0;             // Terminate if Options not set or may be set defaults 
 
   // Get the Options, could use a structure for that 
    Options options = dlg.options();
    MainWindow w;
    w.setOptions( options ); 
    w.show();
    app.exec();
}

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you can also try to create the Options Dialog dynamically

[Dauntless]

Great answer sunil.thaha, that's exactly what I wanted. I knew there must be a better way to do this, thank you for giving me such a smart solution.

Thanks sarode for the reference, it is related to what I needed, but I am glad I found an even cleaner way to do it thanks to sunil.thaha comment.