+\docparam{which}{One of the wxICON\_XXX specifies which icon to return.}
+
+See \helpref{wxMessageBox}{wxmessagebox} for a list of icon identifiers.
+
+\membersection{wxApp::SetUseBestVisual}\label{wxappsetusebestvisual}
+
+\func{void}{SetUseBestVisual}{\param{bool}{ flag}}
+
+Allows the programmer to specify whether the application will use the best visual
+on systems that support several visual on the same display. This is typically the
+case under Solaris and IRIX, where the default visual is only 8-bit whereas certain
+appications are supposed to run in TrueColour mode.
+
+Note that this function has to be called in the constructor of the {\tt wxApp}
+instance and won't have any effect when called later on.
+
+This function currently only has effect under GTK.
+
+\wxheading{Parameters}
+
+\docparam{flag}{If TRUE, the app will use the best visual.}