disabled (conditionally) separating static line; improved borders

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23583 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/listbook.h

@@ -20,11 +20,24 @@
 
 #if wxUSE_LISTBOOK
 
+// this can be defined to put a static line as separator between the list
+// control and the page area; but I think it finally looks better without it so
+// it is not enabled by default
+//#define wxUSE_LINE_IN_LISTBOOK 1
+
+#if !wxUSE_STATLINE
+    #undef wxUSE_LINE_IN_LISTBOOK
+    #define wxUSE_LINE_IN_LISTBOOK 0
+#endif
+
 #include "wx/bookctrl.h"
 
 class WXDLLEXPORT wxListView;
 class WXDLLEXPORT wxListEvent;
-class WXDLLEXPORT wxStaticLine;;
+
+#if wxUSE_LINE_IN_LISTBOOK
+class WXDLLEXPORT wxStaticLine;
+#endif // wxUSE_LINE_IN_LISTBOOK
 
 // ----------------------------------------------------------------------------
 // constants
@@ -117,8 +130,10 @@ private:
     // the list control we use for showing the pages index
     wxListView *m_list;
 
+#if wxUSE_LINE_IN_LISTBOOK
     // the line separating it from the page area
     wxStaticLine *m_line;
+#endif // wxUSE_LINE_IN_LISTBOOK
 
     // the currently selected page or wxNOT_FOUND if none
     int m_selection;