...set/retrieve the Computer Name?

{ Retrieve the computer name }

function GetComputerName: string;
var
  buffer: array[0..MAX_COMPUTERNAME_LENGTH + 1] of Char;
  Size: Cardinal;
begin
  Size := MAX_COMPUTERNAME_LENGTH + 1;
  Windows.GetComputerName(@buffer, Size);
  Result := StrPas(buffer);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  ShowMessage(GetComputerName);
end;


{ Set the computer name }

function SetComputerName(AComputerName: string): Boolean;
var
  ComputerName: array[0..MAX_COMPUTERNAME_LENGTH + 1] of Char;
  Size: Cardinal;
begin
  StrPCopy(ComputerName, AComputerName);
  Result := Windows.SetComputerName(ComputerName);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  if SetComputerName('NewComputerName') then
    ShowMessage('Computer Name Reset Setting will be used at next startup.')
  else 
    ShowMessage('Computer Name Not Reset');
end;

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