Can I force my MainWindow to initialize its widgets before calling app.exec() ?

[ComServant]

In my project, I use alot of direct non-Qt OpenGL calls.

At some point during startup I want an opportunity to create/load some initial OpenGL resources. To do this, I need to call QOpenGLWidget::makeCurrent(),

My problem is, I can't call "QOpenGLWidget::makeCurrent()" until after application.exec() is entered. Is there some way I can force my QMainWindow's child QOpenGLWidgets to be initialized before application.exec() is entered?

=

MainWindow mainWindow(argc, argv);
    if(!mainWindow.Initialize()) //I'd really like to load my OpenGL resources here...
    {
        return EXIT_FAILURE;
    }
 
    return application.exec(); //But QOpenGLWidget hasn't created the OpenGL context until this is entered.

MainWindow mainWindow(argc, argv);
    if(!mainWindow.Initialize()) //I'd really like to load my OpenGL resources here...
    {
        return EXIT_FAILURE;
    }

    return application.exec(); //But QOpenGLWidget hasn't created the OpenGL context until this is entered.

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