Question

ip address of my mechine

Asked by: seenavinay

How i  display  the IP address of my system to  edit1.text   using delphi code

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Asked On
2009-11-01 at 05:03:10ID24861718
Tags

ip address using delphi

Topics

Delphi Printing

,

Algorithms

Participating Experts
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Points
500
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Answers

 

by: sedgwickPosted on 2009-11-01 at 05:07:33ID: 25713592

here a function which returns current ip address:

uses  Winsock; 
 
 
function getIPs: Tstrings; 
type 
  TaPInAddr = array[0..10] of PInAddr; 
  PaPInAddr = ^TaPInAddr; 
var 
  phe: PHostEnt; 
  pptr: PaPInAddr; 
  Buffer: array[0..63] of Char; 
  I: Integer; 
  GInitData: TWSAData; 
begin 
  WSAStartup($101, GInitData); 
  Result := TstringList.Create; 
  Result.Clear; 
  GetHostName(Buffer, SizeOf(Buffer)); 
  phe := GetHostByName(buffer); 
  if phe = nil then Exit; 
  pPtr := PaPInAddr(phe^.h_addr_list); 
  I    := 0; 
  while pPtr^[I] <> nil do 
  begin 
    Result.Add(inet_ntoa(pptr^[I]^)); 
    Inc(I); 
  end; 
  WSACleanup; 
end; 
                                              
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by: senadPosted on 2009-11-07 at 15:53:31ID: 25768688

 

by: senadPosted on 2009-11-09 at 03:05:24ID: 25774834

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
   Timer1: TTimer;
   Label1: TLabel;
   function LocalIP: string; //<--insert this line
    procedure FormCreate(Sender: TObject);
   procedure Timer1Timer(Sender: TObject);
    procedure FormResize(Sender: TObject);
 private
   { Private declarations }
 public
   { Public declarations }
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
function TForm1.LocalIP: string;
type
  TaPInAddr = array [0..10] of PInAddr;
  PaPInAddr = ^TaPInAddr;
var
   phe: PHostEnt;
   pptr: PaPInAddr;
   Buffer: array [0..63] of char;
   i: Integer;
   GInitData: TWSADATA;
begin
   WSAStartup($101, GInitData);
   Result := '';
   GetHostName(Buffer, SizeOf(Buffer));
   phe :=GetHostByName(buffer);
   if phe = nil then Exit;
   pptr := PaPInAddr(Phe^.h_addr_list);
   i := 0;
   while pptr^[i] <> nil do
   begin
     result:=StrPas(inet_ntoa(pptr^[i]^));
     Inc(i);
   end;
   WSACleanup;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
  Label1.Caption:=LocalIP;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Label1.Caption:=LocalIP;
end;

procedure TForm1.FormResize(Sender: TObject);
begin
Application.Title := Label1.Caption;

end;

end.


This works even under W7 !
However this only gets your local IP.If you are behind a router then its another thing....

 

by: seenavinayPosted on 2009-11-12 at 22:45:36ID: 31648533

not working in delphi2009, works only in delphi7

20120131-EE-VQP-002

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