+ if ( GetKind() == wxITEM_RADIO )
+ {
+ // it doesn't make sense to uncheck a radio item - what would this do?
+ if ( !check )
+ return;
+
+ // get the index of this item in the menu
+ const wxMenuItemList& items = m_parentMenu->GetMenuItems();
+ int pos = items.IndexOf(this);
+ wxCHECK_RET( pos != wxNOT_FOUND,
+ _T("menuitem not found in the menu items list?") );
+
+ // get the radio group range
+ int start,
+ end;
+
+ if ( m_isRadioGroupStart )
+ {
+ // we already have all information we need
+ start = pos;
+ end = m_radioGroup.end;
+ }
+ else // next radio group item
+ {
+ // get the radio group end from the start item
+ start = m_radioGroup.start;
+ end = items.Item(start)->GetData()->m_radioGroup.end;
+ }
+
+#ifdef __WIN32__
+ // calling CheckMenuRadioItem() with such parameters hangs my system
+ // (NT4 SP6) and I suspect this could happen to the others as well - so
+ // don't do it!
+ wxCHECK_RET( start != -1 && end != -1,
+ _T("invalid ::CheckMenuRadioItem() parameter(s)") );
+
+ if ( !::CheckMenuRadioItem(hmenu,
+ start, // the first radio group item
+ end, // the last one
+ pos, // the one to check
+ MF_BYPOSITION | flags) )
+ {
+ wxLogLastError(_T("CheckMenuRadioItem"));
+ }
+#endif // __WIN32__
+
+ // also uncheck all the other items in this radio group
+ wxMenuItemList::Node *node = items.Item(start);
+ for ( int n = start; n <= end && node; n++ )
+ {
+ if ( n != pos )
+ {
+ node->GetData()->m_isChecked = FALSE;
+ }
+
+ // we also have to do it in the menu for Win16 (under Win32
+ // CheckMenuRadioItem() does it for us)
+#ifndef __WIN32__
+ ::CheckMenuItem(hmenu, n, n == pos ? MF_CHECKED : MF_UNCHECKED);
+#endif // Win16
+
+ node = node->GetNext();
+ }
+ }
+ else // check item
+ {
+ if ( ::CheckMenuItem(hmenu,
+ GetRealId(),
+ MF_BYCOMMAND | flags) == (DWORD)-1 )
+ {
+ wxLogLastError(wxT("CheckMenuItem"));
+ }