Use event modifiers and accessors rather than m_ variables directly, which are now protected rather than public with 2.4 compatibility disabled

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31454 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/radiobox.cpp

@@ -315,7 +315,7 @@ bool wxRadioBox::MSWCommand(WXUINT cmd, WXWORD id)
 
 void wxRadioBox::Command(wxCommandEvent & event)
 {
-    SetSelection (event.m_commandInt);
+    SetSelection (event.GetInt());
     SetFocus();
     ProcessCommand(event);
 }