{ *************************************************************************** * * * This source is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This code is distributed in the hope that it will be useful, but * * WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * * General Public License for more details. * * * * A copy of the GNU General Public License is available on the World * * Wide Web at . You can also * * obtain it by writing to the Free Software Foundation, * * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * * *************************************************************************** } unit MainUnit; {$mode objfpc}{$H+} interface uses Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs; type { TMyThread } TMyThread = class(TThread) private fStatusText: string; procedure ShowStatus; protected procedure Execute; override; public constructor Create(CreateSuspended: boolean); end; { TForm1 } TForm1 = class(TForm) procedure FormCreate(Sender: TObject); private public end; var Form1: TForm1; implementation { TForm1 } procedure TForm1.FormCreate(Sender: TObject); var MyThread : TMyThread; begin MyThread := TMyThread.Create(True); // This way it doesn't start automatically if Assigned(MyThread.FatalException) then raise MyThread.FatalException; // Here the code initialises anything required before the threads starts executing MyThread.Resume; end; { TMyThread } procedure TMyThread.ShowStatus; begin Form1.Caption := fStatusText; end; procedure TMyThread.Execute; var newStatus : string; begin fStatusText := 'Starting...'; Synchronize(@Showstatus); fStatusText := 'Running...'; while (not Terminated) and (true {any condition required}) do begin //here goes the code of the main thread loop newStatus:='Time: '+FormatDateTime('YYYY-MM-DD HH:NN:SS',Now); if NewStatus <> fStatusText then begin fStatusText := newStatus; Synchronize(@Showstatus); end; end; end; constructor TMyThread.Create(CreateSuspended: boolean); begin FreeOnTerminate := True; inherited Create(CreateSuspended); end; initialization {$I mainunit.lrs} end.