typedef struct tagOFNA {
   DWORD        lStructSize;
   HWND         hwndOwner;
   HINSTANCE    hInstance;
   LPCSTR       lpstrFilter;
   LPSTR        lpstrCustomFilter;
   DWORD        nMaxCustFilter;
   DWORD        nFilterIndex;
   LPSTR        lpstrFile;
   DWORD        nMaxFile;
   LPSTR        lpstrFileTitle;
   DWORD        nMaxFileTitle;
   LPCSTR       lpstrInitialDir;
   LPCSTR       lpstrTitle;
   DWORD        Flags;
   WORD         nFileOffset;
   WORD         nFileExtension;
   LPCSTR       lpstrDefExt;
   LPARAM       lCustData;
   LPOFNHOOKPROC lpfnHook;
   LPCSTR       lpTemplateName;
#ifdef _MAC
   LPEDITMENU   lpEditInfo;
   LPCSTR       lpstrPrompt;
#endif
#if (_WIN32_WINNT >= 0x0500)
   void *		pvReserved;
   DWORD        dwReserved;
   DWORD        FlagsEx;
#endif 
} OPENFILENAMEA, *LPOPENFILENAMEA;

typedef OPENFILENAMEA OPENFILENAME;