unit2.pas

在深度历险网站上发布的所有delphi程序原码。对初学delphi者很有用。

unit Unit2;

interface

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

type
  TForm1 = class(TForm)
    Label6: TLabel;
    btnStart: TButton;
    txtDelay: TEdit;
    Label1: TLabel;
    txtTimes: TEdit;
    Label2: TLabel;
    mmoResult: TMemo;
    Button1: TButton;
    procedure btnStartClick(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

var
  PerformanceCounterOverhead: TLargeInteger;
  ErrorArray: array[1..4, 1..1000] of Real;
  ErrorIndex: Integer;
  
  { MyDelay1 - use GetTickCount }
procedure MyDelay1(MSecs: Longint); stdcall;
var
  BeginTime: Longint;
begin
  BeginTime := GetTickCount;
  repeat
  until GetTickCount - BeginTime >= MSecs;
end;

{ MyDelay2 - use QueryPerformanceCount }
procedure MyDelay2(MSecs: Longint); stdcall;
var
  rStart, rEnd, rFreq: TLargeInteger;
begin
  {