Create a GUID at runtime

Problem/Question/Abstract:

Create a GUID at runtime

Answer:

You may need to create a GUID at runtime. One reason could be to simply have a unique number that identifies each workstation.By the way the last group of digits in the GUID generated on a computer is its network card number (if any is present).

Delphi does not have the needed definitions, here they are:

function CoCreateGuid(pGUID: TGUID): longint; external 'OLE32.DLL';

procedure TForm1.FormCreate(Sender: TObject);
var
  udtGUID: TGUID;
  lResult: longint;
begin
  lResult := CoCreateGuid(udtGUID);
  // see definition of TGUID in Delphi's online help
  // udtGUID.D4 = network card's number
end;