don't use obsolete functions (mostly copystring() and Count()), remove their documentation (patch 1697956)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45395 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/bookctrl.cpp

@@ -258,7 +258,7 @@ void wxBookCtrlBase::DoSize()
 
     // resize all pages to fit the new control size
     const wxRect pageRect = GetPageRect();
-    const unsigned pagesCount = m_pages.Count();
+    const unsigned pagesCount = m_pages.GetCount();
     for ( unsigned int i = 0; i < pagesCount; ++i )
     {
         wxWindow * const page = m_pages[i];