unit1.pas

这有很多Delphi应用的例子

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Db, DBTables, ExtCtrls,ShellApi;

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

var
  Form1: TForm1;

implementation

{$R *.DFM}


procedure TForm1.FormCreate(Sender: TObject);
var
  currentTime:LongInt;
begin
  currentTime:=GetTickCount div 1000;
  while ((GetTickCount div 1000)<(currentTime+3)) do
  {不做任何事};
end;

end.