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delphi xe3里判断网络是否连接成功
unit Unit2;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Web.Win.Sockets;
type
TForm2 = class(TForm)
TcpServer1: TTcpServer;
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form2: TForm2;
implementation
{$R *.dfm}
procedure TForm2.FormCreate(Sender: TObject);
begin
try
TcpServer1.Active :=True ;
ShowMessage('网络已连接')
except
ShowMessage('网络没连接');
end;
end;
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