file association for mac! associating file is done automatically when you move the app in your system but there is also a button to set it manually i had to disable argument parsing and to subclass qapplication to make this work please test

/*
 * Copyright (C) 2008 Remko Troncon
 */

#ifndef AUTOUPDATER_H
#define AUTOUPDATER_H

class AutoUpdater
{
    public:
        virtual ~AutoUpdater();

        virtual void checkForUpdates() = 0;
};

#endif