获取本地计算机的名称和IP地址(Delphi篇)

实例程序代码:
unit Unit1;

interface

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

type
TfrmMain = class(TForm)
  edtIP: TEdit;
  edtName: TEdit;
  Label1: TLabel;
  Label2: TLabel;
  btnStart: TButton;
  function GetHostName:String;
procedure btnStartClick(Sender: TObject);
function NameToIP(Name:string):String;
private
  { Private declarations }
public
  { Public declarations }
end;

var
frmMain: TfrmMain;

implementation

{$R *.dfm}

function TfrmMain.GetHostName:String;
var
ComputerName: array[0..MAX_COMPUTERNAME_LENGTH+1] of char;
Size: Cardinal;
begin
result:='';
Size := MAX_COMPUTERNAME_LENGTH+1;
GetComputerName(ComputerName, Size);
Result:=StrPas(ComputerName);
end;
procedure TfrmMain.btnStartClick(Sender: TObject);
begin
edtName.Text:=GetHostName;
edtIP.Text:=NameToIP(edtName.Text);
end;
function TfrmMain.NameToIP(Name:string):String;
var
WSAData: TWSAData;
HostEnt: PHostEnt;
begin
result:='';
WSAStartup(2, WSAData);
HostEnt:= GetHostByName(PChar(Name));
if HostEnt <> nil then
begin
with HostEnt^do
result:= Format('%d.%d.%d.%d',[Byte(h_addr^[0]), Byte(h_addr^[1]),
Byte(h_addr^[2]), Byte(h_addr^[3])]);
end;
WSACleanup;
end;
end.

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