From Atlwinx.h
//// Dual Argument Helper Classes (for ATL 3.0)
#if (_TL_VER <0x0700)
Namespace ATL {
Class _u_rect {public: _U_Rect (LPRECT): M_LPRect (LPRECT) {} _U_Rect (Rect & RC): m_lprect (& rc) {} lprect m_lpRect;
Class _u_menuorid {public: _U_MENUORID (HMENU HMENU): m_hmenu (HMENU) {} _u_menuorid (uint NID): m_hmenu ((HMENU) longtohandle (NID)) {} hmenu m_hmenu;};
Class _u_stringorid {public: _u_stringorid (LPCTSTR LPSTRING): M_LPSTR (LPSTRING) {} _u_stringorid (uint NID): m_lpstr (MakeintResource (NID)) {} lpctstr m_lpstr;};
}; // Namespace ATL
#ENDIF / / (_ ATL_VER <0x0700)
It can be seen that there should be wtl :: _ u_stringorid, change it to ATL :: _ u_stringorid
