Delphi 简单线程例子

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    Edit2: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

type //线程类
  TMyThread = class(TThread)
  private
    PNum1, PNum2: Integer;
    MyEdit: TEdit;
  protected
    procedure Execute; override;
  public
    constructor Ctreate(Num1, Num2: Integer; edit: TEdit);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

constructor TMyThread.Ctreate(Num1, Num2: Integer; edit: TEdit);
begin
  PNum1 := Num1;
  PNum2 := Num2;
  MyEdit := edit;
  FreeOnTerminate := True;
  inherited Create(False);
end;

procedure TMyThread.Execute;
var
  i, k: Integer;
begin //线程执行的地方，你可以改成自己的计算过程或者函数
  k := 0;
  for i := 0 to 10000000 do
    k := k + PNum1 * i + PNum2 * i;
  MyEdit.Text := IntToStr(k);
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  MyCalc: Tcalc;
begin
  MyCalc := Tcalc.Ctreate(1, 1, edit1);
  MyCalc := Tcalc.Ctreate(1, 1, edit2);
end;

end.