add artprov sample to the list

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14986 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/tsamples.tex

@@ -51,6 +51,13 @@ i.e. a minimal program that doesn't demonstrate anything apart from what is
 needed to write a program that will display a "hello" dialog. This is usually
 a good starting point for learning how to use wxWindows.
 
+\subsection{Art provider sample}\label{sampleartprovider}
+
+The {\tt artprov} sample shows how you can customize the look of standard
+wxWindows dialogs by replacing default bitmaps/icons with your own versions.
+It also shows how you can use \helpref{wxArtProvider}{wxartprovider} to
+get stock bitmaps for use in your application.
+
 \subsection{Calendar sample}\label{samplecalendar}
 
 This font shows the \helpref{calendar control}{wxcalendarctrl} in action. It