The data structure contains information used as the graphic button control data.
typedef struct _GBTNCDATA { USHORT usReserved; /* Reserved field. */ PSZ pszText; /* Initial text of button. */ HMODULE hmod; /* Handle of bitmap resource. */ USHORT cBitmaps; /* Number of bitmaps. */ USHORT aidBitmap[1]; /* Array of bitmap IDs. */ } GBTNCDATA; typedef GBTNCDATA * PGBTNCDATA ;