-Call this to explicitly exit the main message (event) loop.
-You should normally exit the main loop (and the application) by deleting
-the top window.
+Returns \true if the application is active, i.e. if one of its windows is
+currently in the foreground. If this function returns \false and you need to
+attract users attention to the application, you may use
+\helpref{wxTopLevelWindow::RequestUserAttention}{wxtoplevelwindowrequestuserattention}
+to do it.
+
+
+\membersection{wxApp::IsMainLoopRunning}\label{wxappismainlooprunning}
+
+\func{static bool}{IsMainLoopRunning}{\void}
+
+Returns \true if the main event loop is currently running, i.e. if the
+application is inside \helpref{OnRun}{wxapponrun}.
+
+This can be useful to test whether the events can be dispatched. For example,
+if this function returns \false, non-blocking sockets cannot be used because
+the events from them would never be processed.