ml#isRunning">isRunning</a>() returns false, it means that no other instance is running, and this instance has assumed the role as the running instance. In this case, the application should continue with the initialization of the application user interface before entering the event loop with <a href="http://qt.nokia.com/doc/4.6/qapplication.html#exec">exec</a>(), as normal.</p>
<p>The <a href="qtsingleapplication.html#messageReceived">messageReceived</a>() signal will be emitted when the running application