INVHELP.H

HRESULT CreateObject(LPOLESTR pszProgID, IDispatch FAR* FAR* ppdisp); 
HRESULT
Invoke(LPDISPATCH pdisp,
WORD wFlags,
LPVARIANT pvRet,
EXCEPINFO FAR* pexcepinfo,
UINT FAR* pnArgErr,
LPOLESTR pszName,
LPCTSTR pszFmt,
...);