用下面这段判断数据库是否起来了,在.dpr里判断
try
Database1.Connected := True;
except
application.MessageBox('数据库连接错误', '系统提示', 0);
application.Terminate;
end;
try
Database1.Connected := True;
except
application.MessageBox('数据库连接错误', '系统提示', 0);
application.Terminate;
end;
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls,Winsock;type
TForm1 = class(TForm)
Button1: TButton;
Edit1: TEdit;
StaticText1: TStaticText;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;
function FindComputer(ComputerName: string):Boolean;implementation{$R *.DFM}function FindComputer(ComputerName: string):Boolean;
var
WSAData: TWSAData;
HostEnt: PHostEnt;
begin
Result :=True;
WSAStartup(2, WSAData);
HostEnt := gethostbyname(PChar(ComputerName));
if HostEnt = nil then Result := False;
WSACleanup;
end;procedure TForm1.Button1Click(Sender: TObject);
begin
if FindComputer(edit1.text)=True then
showmessage(edit1.text+'在局域网上!')
else
showmessage(edit1.text+'不在局域网上!')
end;end.