documented Number() as obsolete and added GetCount()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13189 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/listbox.tex

@@ -198,6 +198,12 @@ Returns a pointer to the client data associated with the given item (if any).
 
 A pointer to the client data, or NULL if not present.
 
+\membersection{wxListBox::GetCount}\label{wxlistboxgetcount}
+
+\constfunc{int}{GetCount}{\void}
+
+Returns the number of items in the listbox.
+
 \membersection{wxListBox::GetSelection}\label{wxlistboxgetselection}
 
 \constfunc{int}{GetSelection}{\void}
@@ -301,6 +307,12 @@ and {\tt items}.}
 
 \constfunc{int}{Number}{\void}
 
+{\bf Obsolescence note:} This method is obsolete and was replaced with 
+\helpref{GetCount}{wxlistboxgetcount}, please use the new method in the new
+code. This method is only available if wxWindows was compiled with 
+{\tt WXWIN\_COMPATIBILITY\_2\_2} defined and will disappear completely in
+future versions.
+
 Returns the number of items in the listbox.
 
 \membersection{wxListBox::Selected}\label{wxlistboxselected}