Removed a lot of redundant references to wxWindow::On... functions.

Added initial artprov.tex.
Sorted out duff references.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15035 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/tsamples.tex

@@ -55,7 +55,7 @@ a good starting point for learning how to use wxWindows.
 
 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
+It also shows how you can use wxArtProvider to
 get stock bitmaps for use in your application.
 
 \subsection{Calendar sample}\label{samplecalendar}