<wx/app.h>
+\wxheading{Library}
+
+\helpref{wxBase}{librarieslist}
+
\wxheading{See also}
\helpref{wxApp overview}{wxappoverview}
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,
+This can be useful to test whether 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.
This function is called when an unhandled C++ exception occurs inside
\helpref{OnRun()}{wxapponrun} (the exceptions which occur during the program
-startup and shutdown might not be caught at all).
-Note that the exception type is lost by now, so if you want to really handle
-the exception you should override \helpref{OnRun()}{wxapponrun} and put a
-try/catch clause around the call to the base class version there.
+startup and shutdown might not be caught at all). Notice that by now the main
+event loop has been terminated and the program will exit, if you want to
+prevent this from happening (i.e. continue running after catching an exception)
+you need to override \helpref{OnExceptionInMainLoop}{wxapponexceptioninmainloop}.
+
+The default implementation shows information about the exception in debug build
+but does nothing in the release build.
\membersection{wxApp::ProcessMessage}\label{wxappprocessmessage}