A PChar is like a String. The diference (mainly) is that a PCHAR String is not null-terminated and a String datatype in Delphi is null-terminated and dynamicall allocate the memory. Outside Delphi, like VFP, is safe map to the local String datatype...That it, PCHAR&String are the same animal, with diferent internal manipulation that is not important outside Delphi.

If you need acces a array, is necesary send from VFP a array declared with Declare arrar[1] (maybe the exact size, if necesary) and BY REFERENCE. But, in this case, TChar is array of individual chars, and is possible map symple to a String type, becuase in Delphi, all strings are array of char and become type compatibles (But i think that you want best a array manipulation).

In Delphi, is possible declare a parameter in diferent modes, in/out,in,out,retval, and by value & by reference. In this case, a VAR meaning a IN/OUT parameters(like @Parameter in VFP) so the value must be send by reference and not by value (By default, all Delphi params are by value).

Enough?