1:
2:
3:
4:
5:

  Application.Initialize;
  Application.Title := 'TCI Service';
  Application.CreateForm(TBAKService, BAKService);
  Application.CreateForm(TForm1,Form1);
  Application.Run;					

1:
2:
3:
4:
5:
6:
7:

  Application.Initialize;
  Application.Title := 'TCI Service';
  Application.CreateForm(TBAKService, BAKService);
  BAKService.ServiceStart(BAKServce);
  BAKService.ServiceExecute(BAKService);
  // Application.Run wurde in den BAKService.Execute verschoben
  BAKService.ServiceDestroy(BAKService);					

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
54:
55:
56:
57:
58:
59:
60:
61:
62:
63:
64:
65:
66:
67:
68:
69:
70:
71:
72:
73:
74:
75:
76:
77:
78:
79:
80:
81:
82:
83:
84:
85:
86:
87:
88:
89:
90:
91:
92:
93:
94:
95:
96:
97:
98:
99:
100:
101:
102:
103:
104:
105:
106:
107:
108:
109:
110:
111:
112:
113:
114:
115:
116:
117:
118:
119:
120:
121:
122:
123:
124:
125:
126:
127:
128:
129:
130:
131:
132:
133:
134:
135:
136:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr,   Dialogs, WinSvc;

type
  TBAKService = class(TService)
    procedure ServicePause(Sender: TService; var Paused: Boolean);
    procedure ServiceStart(Sender: TService; var Started: Boolean);
    procedure ServiceContinue(Sender: TService; var Continued: Boolean);
    procedure ServiceStop(Sender: TService; var Stopped: Boolean);
    procedure ServiceCreate(Sender: TObject);
    procedure ServiceDestroy(Sender: TObject);
    procedure ServiceExecute(Sender: TService);
  private
  public
    hWndProc  : THandle;
    hSCM      : THandle;
    hService  : THandle;
    function  GetServiceController: TServiceController; override;
    procedure WndProc(var Message: TMessage);
  end;

type
  TThreadTool = class (TThread)
   private
   public
    procedure InitialForm;
    procedure TerminateForm;
    procedure Execute; override;
  end;

var

   BAKService: TBAKService;
   ThreadTool: TThreadTool = NIL;

implementation

uses Frm_Main;

{$R *.DFM}


procedure TThreadTool.Execute;
 begin
  Synchronize(InitialForm);
  try
   repeat
    sleep(10);                              
   until Terminated;
  finally
   if assigned(Form1) then Synchronize(TerminateForm);
  end;
end;

procedure TThreadTool.InitialForm;
 begin
  Form1 := TForm1.Create(NIL);
  Form1.Show;
end;

procedure TThreadTool.TerminateForm;
 begin
  Form1.Free;
  Form1 := NIL;
end;

procedure TBAKService.WndProc(var Message: TMessage);
 begin
  if assigned(Form1) then postmessage(Form1.Handle, Message.Msg, Message.WParam, Message.LParam);
end;

procedure ServiceController(CtrlCode: DWord); stdcall;
begin
  BAKService.Controller(CtrlCode);
end;

function TBAKService.GetServiceController: TServiceController;
begin
  Result := ServiceController;   
end;

procedure TBAKService.ServicePause(Sender: TService; var Paused: Boolean);
 begin
  ThreadTool.Suspend;
  Paused := True;
end;

procedure TBAKService.ServiceStart(Sender: TService; var Started: Boolean);
 begin
  ThreadTool.Resume;
  Started := True;
end;

procedure TBAKService.ServiceContinue(Sender: TService;
  var Continued: Boolean);
 begin
  if ThreadTool.Suspended then ThreadTool.Resume;
  Continued := True;
end;

procedure TBAKService.ServiceStop(Sender: TService; var Stopped: Boolean);
 begin
  ThreadTool.Suspend;
  Stopped := True;
end;

procedure TBAKService.ServiceCreate(Sender: TObject);
 begin
  hWndProc := AllocateHWnd(WndProc);
  ThreadTool := TThreadTool.Create(TRUE);
end;

procedure TBAKService.ServiceDestroy(Sender: TObject);
 begin
  if assigned(ThreadTool) then
   begin
    ThreadTool.Terminate;
    ThreadTool.WaitFor;
    ThreadTool.Free;
  end;
  DeAllocateHWnd(hWndProc);
end;

procedure TBAKService.ServiceExecute(Sender: TService);
 begin
  Application.Run; // wenn nicht schon im Project-Code 
  repeat
   sleep(10);
  until Terminated;
end;

end.