problem with dll Delphi using string

[fabrice91]

Hi everybody,

My question is simple : how can I get a string parameter from a delphi dll, there are a lot of posts about it but no clear answers... too bad

Here is an example ok a function which works in Delphi but not in LV

procedure test_chaine(apchar : Pchar);stdcall;
begin
  MessageDlg(string(apchar), mtWarning, [mbOK], 0);

end;

Call Library Function parameters :

calling convention : stdcall

arg1 string format C string Pointer

Thanks you

Fabrice

[Romain_Duval]

Hi Fabrice91,

Thank you for posting your answer on National Instruments forum.

It would be great if you could provide us the dll or a similar delphi dll sending a string.

Here is an interesting article about delphi dll.  

Cheers Romain

(la prochaine fois n'hésitez pas à répondre en français 🙂