+    wxCHECK_MSG( pItem, NULL, _T("NULL item in wxMenu::DoAppend") );
+
+    bool                            bCheck = FALSE;
+
+    if (pItem->GetKind() == wxITEM_RADIO)
+    {
+        int                         nCount = GetMenuItemCount();
+
+        if (m_nStartRadioGroup == -1)
+        {
+            //
+            // Start a new radio group
+            //
+            m_nStartRadioGroup = nCount;
+
+            //
+            // For now it has just one element
+            //
+            pItem->SetAsRadioGroupStart();
+            pItem->SetRadioGroupEnd(m_nStartRadioGroup);
+
+            //
+            // Ensure that we have a checked item in the radio group
+            //
+            bCheck = TRUE;
+        }
+        else // extend the current radio group
+        {
+            //
+            // We need to update its end item
+            //
+            pItem->SetRadioGroupStart(m_nStartRadioGroup);