GetTitle needs to be a const method.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17238 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/mdig.h

@@ -140,7 +140,7 @@ public:
 #endif // wxUSE_MENUS
 
     virtual void SetTitle(const wxString& title);
-    virtual wxString GetTitle();
+    virtual wxString GetTitle() const;
 
     virtual void Activate();
 

src/generic/mdig.cpp

@@ -527,7 +527,7 @@ void wxGenericMDIChildFrame::SetTitle(const wxString& title)
     }
 }
 
-wxString wxGenericMDIChildFrame::GetTitle()
+wxString wxGenericMDIChildFrame::GetTitle() const
 {
     return m_Title;
 }