added Get/SetItemToolTip() (and implemented them for MSW) to allow setting tooltips for the individual radiobox items

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39030 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/radiobox.h

@@ -99,6 +99,9 @@ public:
     virtual void SetFocus();
     virtual bool SetFont(const wxFont& font);
     virtual bool ContainsHWND(WXHWND hWnd) const;
+#if wxUSE_TOOLTIPS
+    virtual bool HasToolTips() const;
+#endif // wxUSE_TOOLTIPS
 
     // we inherit a version always returning false from wxStaticBox, override
     // it to behave normally
@@ -137,6 +140,10 @@ protected:
                            int sizeFlags = wxSIZE_AUTO);
     virtual wxSize DoGetBestSize() const;
 
+#if wxUSE_TOOLTIPS
+    virtual void DoSetItemToolTip(unsigned int n, wxToolTip * tooltip);
+#endif
+
 #ifndef __WXWINCE__
     virtual WXHRGN MSWGetRegionWithoutChildren();
 #endif // __WXWINCE__