[vcl worked]Getting local IP address in Delphi

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Winsock;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

Function GetIPAddress():String;
type
  pu_long = ^u_long;
var
  varTWSAData : TWSAData;
  varPHostEnt : PHostEnt;
  varTInAddr : TInAddr;
// sypoh namebuf : Array[0..255] of char;
  namebuf: array [0..63] of Ansichar;
begin
  If WSAStartup($101,varTWSAData) <> 0 Then
  Result := 'No. IP Address'
  Else Begin
    gethostname(namebuf,sizeof(namebuf));

    varPHostEnt := gethostbyname(namebuf);
    varTInAddr.S_addr := u_long(pu_long(varPHostEnt^.h_addr_list^)^);
    Result := 'IP Address: '+inet_ntoa(varTInAddr);
  End;
  WSACleanup;
end;


procedure TForm1.FormCreate(Sender: TObject);
begin
 Label1.Caption := GetIPAddress;
end;

end.