 receives messages from another instance of the same application. When a message is received it might be helpful to the user to raise the application so that it becomes visible. To facilitate this, QtSingleApplication provides the <a href="qtsingleapplication.html#setActivationWindow">setActivationWindow</a>() function and the <a href="qtsingleapplication.html#activateWindow">activateWindow</a>() slot.</p>
<p>If <a href="qtsingleapplication.html#isRunning">isRunning</a>() returns true, another instance is a