void (_stdcall *GetPoint)(HOBJ StId, char *Adr, PointParPtr *PtParPtr);

StID	Parent ID of searched I/O tag – station.
Adr	I/O tag address (Adr1).
PtParPtr	Pointer to the PointPar structure pointer. If the value of the pointer is NULL, the I/O was not found.

According to the parameter Adr, the function finds the I/O tag of defined station and returns the pointer to the PointPar structure of the I/O tag, if exists, otherwise it returns the NULL value.