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(1)不用登陆进系统即可运行.
, [& C5 V* N1 O( w+ y (2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的. + ^1 L+ b# s' o2 J6 U3 `9 J
$ D/ Y5 c" c; W2 D" P, q
笔者在2003年为一公司开发机顶盒项目的时候,曾经写过课件上传和媒体服务,下面就介绍一下如何用Delphi7创建一个Service程序.
: ~2 V9 l9 j" q. Y 运行Delphi7,选择菜单File-->New-->Other--->Service Application.将生成一个服务程序的框架.将工程保存为ServiceDemo.dpr和Unit_Main.pas,然后回到主框架.我们注意到,Service有几个属性.其中以下几个是我们比较常用的: 3 G0 k$ Y7 |" ^+ ]
2 J5 Z0 F1 T* ?) W( ^
(1)DisplayName:服务的显示名称 + t1 o: M0 t+ y! z9 }
(2)Name:服务名称. ' v- R0 W' i G7 y
, I$ S7 |, H% n9 |- f6 Q
我们在这里将DisplayName的值改为"Delphi服务演示程序",Name改为"DelphiService".编译这个项目,将得到ServiceDemo.exe.这已经是一个服务程序了!进入CMD模式,切换致工程所在目录,运行命令"ServiceDemo.exe /install",将提示服务安装成功!然后"net start DelphiService"将启动这个服务.进入控制面版-->管理工具-->服务,将显示这个服务和当前状态.不过这个服务现在什么也干不了,因为我们还没有写代码 先"net stop DelphiService"停止再"ServiceDemo.exe /uninstall"删除这个服务.回到Delphi7的IDE. 2 N: u9 N( l, d1 d( y
6 J2 c+ w; E' r2 F3 n/ `
我们的计划是为这个服务添加一个主窗口,运行后任务栏显示程序的图标,双击图标将显示主窗口,上面有一个按钮,点击该按钮将实现Ctrl+Alt+Del功能.
5 B- O' @0 X' S2 k% ]' \1 _7 ]
# F: I D6 F, X0 z% ^ 实际上,服务程序莫认是工作于Winlogon桌面的,可以打开控制面板,查看我们刚才那个服务的属性-->登陆,其中"允许服务与桌面交互"是不打钩的.怎么办?呵呵,回到IDE,注意那个布尔属性:Interactive,当这个属性为True的时候,该服务程序就可以与桌面交互了. , p" t; x; X7 M4 P
* b( U0 ` o5 J( [7 W File-->New-->Form为服务添加窗口FrmMain,单元保存为Unit_FrmMain,并且把这个窗口设置为手工创建.完成后的代码如下:
5 B/ ?. g* @0 K+ B( ?' y1 H- G
Z. g' a( [" m+ W2 s! U# {& f
0 U% n( G1 J- ~, r1 ~unit Unit_Main; 9 o6 w" a8 T: O( R& @1 ]' k
) w1 K' l/ g( h
interface / W5 P7 o4 N' f+ \
8 t$ H. h4 R. v' f( ]! M \
uses
8 \2 Q" @" z3 b8 k! _/ RWindows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; Q4 W( M5 i b S: ?* ^" g1 `
9 @; h! v! n' f) {( x% q( ttype * w4 V; t! b; D+ m/ q
TDelphiService = class(TService) 5 Q; m# N) `+ e) l
procedure ServiceContinue(Sender: TService; var Continued: Boolean); ' E8 q+ W' _$ N$ V3 K
procedure ServiceExecute(Sender: TService);
1 w- } L* W; P4 X+ C" Z' ~procedure ServicePause(Sender: TService; var Paused: Boolean); ! H6 k. Z" E$ O9 G' C. H
procedure ServiceShutdown(Sender: TService); " ]) V4 y/ X$ [& q
procedure ServiceStart(Sender: TService; var Started: Boolean);
- U3 f0 X9 c5 C/ aprocedure ServiceStop(Sender: TService; var Stopped: Boolean); 1 e- h5 J0 w N$ n+ O6 G2 ?
private 4 o. }( H1 j# C, D2 Y
{ Private declarations } ' N0 P, p5 m& u! _( u) }' x
public
( \/ G. |% A T" L) ]4 r, [function GetServiceController: TServiceController; override; 0 O3 i# t* S7 p+ p- S: O0 }
{ Public declarations }
1 G, L1 Z, y, @- Z' R8 X9 G" eend; 0 L" C$ i/ H. ~5 U* K& T* Q
, A& K$ q. X1 Y& f8 Y" L
var + m J4 ^9 C0 s# I( n) n
DelphiService: TDelphiService;
, f; E) k7 {9 x$ Q( NFrmMain: TFrmMain; 0 f; j0 A' R" I4 ~
implementation 2 |$ b% R+ E+ q2 u8 V
2 m+ B) v4 t, @2 ]. z; p( f/ X- n
{$R *.DFM}
1 y* J# @) @7 C- {$ `3 F6 L8 x5 c' K/ t
procedure ServiceController(CtrlCode: DWord); stdcall;
/ p$ M2 _6 J- J6 Y8 Ybegin ) z/ V6 _& t# ?" S
DelphiService.Controller(CtrlCode);
0 t& f- E" Q7 qend;
( x5 V- T2 J) u) S( ~9 `9 b$ f1 j" N( ]1 {* S2 r q$ U
function TDelphiService.GetServiceController: TServiceController; # U/ \7 M$ D r4 H9 o- l
begin ' x+ \/ ?% q5 g" V# q
Result := ServiceController; ! f4 n- T, w) A. U' o4 I
end;
- ^. n. \4 T6 l9 T' e% U5 r4 F. X: h! q0 h, g
procedure TDelphiService.ServiceContinue(Sender: TService;
, N# r; Y8 P% h: C1 w( b F$ ^var Continued: Boolean);
& E8 `. [1 z. Rbegin 2 }: s3 g$ r2 L9 s1 \
while not Terminated do
" O2 M5 `8 F. x' Ibegin : Z9 a+ W& J0 |, k& ?+ w
Sleep(10);
) | @& b) o. U% P7 W. E6 x' cServiceThread.ProcessRequests(False); ; n: H1 {8 x* [ T# L8 Z' p
end; # p$ A, q3 |# M: s
end;
0 @8 |* k7 h6 {0 z
+ A7 Q3 p- j+ V3 r7 @% @2 ? vprocedure TDelphiService.ServiceExecute(Sender: TService);
9 G7 E& `* a3 F& W! d0 i! rbegin 5 a J7 d$ n0 c$ B
while not Terminated do
) c4 J) m6 ^: O7 J- f8 S) d/ _begin ) H& v+ q$ j% |$ v+ U) s! y
Sleep(10);
4 }" }- q$ y# i5 G2 n( g4 b# f/ K9 cServiceThread.ProcessRequests(False);
* _6 K* ^9 W2 k$ u% Cend;
- D4 A1 }: g d) m0 g/ X$ Send;
: f- w0 i. T( `3 t% I( h2 \/ M& q& t) d9 d4 B$ w& p
procedure TDelphiService.ServicePause(Sender: TService;
+ k+ m( }4 B# U! V: O2 Q) Kvar Paused: Boolean);
$ P8 S( Y5 T; a4 G- ibegin 1 B7 U' W$ b x6 k8 u, w
Paused := True; ; O% P: D; ?9 ~( B( B
end;
' w" |* g, l6 v8 S2 ~3 l
/ T6 w4 o1 U3 ?# g5 s Qprocedure TDelphiService.ServiceShutdown(Sender: TService); 9 e6 X* j a$ r8 `; |' o6 x6 F
begin , d% O, I' z0 C) Y* q
gbCanClose := true;
1 ~1 m0 I' L3 [FrmMain.Free; 8 w) d0 c7 \- B4 R4 {1 V$ x
Status := csStopped;
8 N; a$ n4 Z8 M" k" T5 ~; xReportStatus(); 4 z% Z |3 H2 m2 Z$ a8 k
end; 6 x5 {3 p. }" j2 n4 v
: l& k2 f) ?# x' H" m% o8 a
procedure TDelphiService.ServiceStart(Sender: TService; 4 T' J5 m W' z; K+ Z
var Started: Boolean); ( }2 E7 z' _* H7 l8 y! Q
begin
% _" |; U/ r' }3 B4 J yStarted := True;
# `) Y" I9 ]) k U& w. c% r0 uSvcmgr.Application.CreateForm(TFrmMain, FrmMain); , o; F+ T& }- _
gbCanClose := False; . C. n, u8 ~% |+ y4 _# f7 Q, E
FrmMain.Hide;
2 v0 x2 x. q3 D" uend; * t+ L& V: _! L5 G
6 H* z& L$ `# I" V3 {3 fprocedure TDelphiService.ServiceStop(Sender: TService;
! \" m7 [/ m E' S) @. A+ n3 Ovar Stopped: Boolean);
. u% Q4 ]# G0 o dbegin $ _7 m& F1 O5 ~/ ]( j4 ~
Stopped := True; * y8 ?% d5 W/ U
gbCanClose := True; 2 b4 j1 T% E" D2 {' U) p
FrmMain.Free;
1 U2 W# h6 N% [end;
$ Z$ w1 k4 {6 r3 g( t9 h2 o
* w2 x" H h3 P) K' c2 E1 Z7 Kend. ! I, y5 S0 u3 L6 V
; {3 c( C$ a6 C7 e3 K' q9 k( k7 c+ w9 E) P0 O, Y' \
主窗口单元如下:
9 y/ w W5 c6 S0 I% j1 i V' r, W3 c8 J M1 Z# I7 d2 R6 C4 ]
unit Unit_FrmMain;
/ c" s# ~! u5 a5 }+ V# b! [3 ~3 o
! Y# u; m K1 ?6 } @interface / m! K& S0 y9 s5 A4 b! c; b
$ r0 |0 p# f( L. b9 G" @+ r4 Kuses ! r8 O/ f6 P: t0 e9 d7 f' t9 f q1 X! @
Windows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, 4 N: H3 E1 I* b, L9 P
Dialogs, ExtCtrls, StdCtrls;
% ]5 @& f9 @, y+ g1 y! J3 Y
* B: ^- j: f, r1 `! y' qconst
0 [! C1 t2 Y: J; [- @+ H7 p$ N/ O( VWM_TrayIcon = WM_USER + 1234; ( B3 Q" W0 S( k5 U! h
type
9 T5 a5 N! a- z# q6 xTFrmMain = class(TForm)
# T1 l( \8 x7 ]9 ^9 c; y3 K! f" ~Timer1: TTimer; 5 L0 ^% z- a I8 g7 o: ?" w
Button1: TButton; " A: ]1 \/ q$ g3 _- J
procedure FormCreate(Sender: TObject); $ `' `6 L8 o& p( a+ m) U
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
8 c# X- ~8 }3 l; Yprocedure FormDestroy(Sender: TObject); ) w& H6 k& e8 R0 k: n$ [# ^1 |
procedure Timer1Timer(Sender: TObject);
, m5 K/ ^) G! r9 r1 F8 zprocedure Button1Click(Sender: TObject); 8 u- T* L; N; g
private 1 q! s) J6 \7 {" P
{ Private declarations } 8 G3 o0 D+ ?# {
IconData: TNotifyIconData; ; ~- ]2 p3 G' s0 @( v1 ~9 n
procedure AddIconToTray;
+ J: S0 p: Y$ Wprocedure DelIconFromTray;
) N& `7 C8 p# l' Pprocedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon; ; C# J# I1 {5 J
procedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND;
& R0 ]& z8 B/ k+ y: I+ U# f/ P1 p$ Tpublic
7 A3 C8 k3 ?4 f) X{ Public declarations }
$ D' r: S# _2 d) Nend;
6 `/ G+ \7 s' ^/ `% o
% C% {8 a7 h" q9 w$ p$ _) l0 Kvar
8 W3 u& m- r9 d6 SFrmMain: TFrmMain;
7 V! r( V- [+ MgbCanClose: Boolean; ! M" `# Q1 i. X k4 h3 C# l
implementation
' m/ C( j5 D1 x$ N( V2 o7 C x9 s" M
{$R *.dfm} 3 V7 T% \' [- ^: p5 Y
! X# W# e' i, _! m7 ~. `
procedure TFrmMain.FormCreate(Sender: TObject);
) v+ z9 D- {. O- A# r- {2 tbegin * t+ I. v6 |( I7 a3 t( @$ Y% Y
FormStyle := fsStayOnTop; 4 S) V' k$ |+ _3 K" ?' a& o4 q
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); / k% U$ d$ o* h) I
gbCanClose := False; 0 E9 _7 a4 b1 k
Timer1.Interval := 1000;
6 |+ j; c# O) ~- ~% ITimer1.Enabled := True; 0 K/ D+ t+ z8 |) d" @! z
end; + h0 m3 y8 ]6 J8 l; ?+ Y- F! t
7 d7 X! ?, v3 W! t( E! y) R
procedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean); 6 H+ @3 p. t" s. S5 ]$ X
begin ( [; B& V' ^% Z& ?. d* a4 B
CanClose := gbCanClose;
[. [7 b6 Z4 ?' G; c6 X9 c Wif not CanClose then # }7 r; u0 }* f- D! s
begin ; x% m a1 o1 @" G' [0 ?7 h
Hide;
# [' |' d* l% w; J7 {- D7 fend;
/ C7 E! ]' t6 M: z3 B: v# q- N: kend;
. @4 ]7 Z- E& _* P$ ~0 U* X. N: q- B, s; y; l. j6 Z% N, O7 g
procedure TFrmMain.FormDestroy(Sender: TObject); q2 Q$ r2 C: g! v% G& r, w2 U6 M$ ^" K
begin ! [: T5 X _+ p2 R! x. O3 z
Timer1.Enabled := False; % P3 X7 L1 R7 [; b$ m
DelIconFromTray;
+ P3 ?3 L4 ~, lend;
( O0 B5 f( `% C9 W2 y; l
, _, A% }2 a7 H1 _& W# m' Gprocedure TFrmMain.AddIconToTray;
5 u9 W0 Z, o* [/ kbegin
: y) @+ U$ {* W" F$ C% H! WZeroMemory(@IconData, SizeOf(TNotifyIconData)); / ?$ U% o( i# q( i) }% F! ~
IconData.cbSize := SizeOf(TNotifyIconData);
) i% z' C, o, \! HIconData.Wnd := Handle;
" l! {& b: \2 ]' V sIconData.uID := 1;
8 W/ ?; ~. I0 U1 BIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
% Y. O3 o# D0 A, x# ]+ sIconData.uCallbackMessage := WM_TrayIcon;
+ P* Y: B0 g( D4 ~; M' U8 WIconData.hIcon := Application.Icon.Handle;
2 x/ |! H! G! r. m) jIconData.szTip := 'Delphi服务演示程序'; ( F; L7 c2 h6 k7 c( t9 m
Shell_NotifyIcon(NIM_ADD, @IconData); - o; S% r3 x! O( H6 G' h
end; % ]2 E4 a4 X- n; M/ s; u% C# p
( c( J, ~+ G5 F# I4 D9 M/ Yprocedure TFrmMain.DelIconFromTray;
, k7 f$ Y* X3 ^' b7 h4 abegin 4 ] A/ o0 ^1 G; l" l- q9 t4 ^
Shell_NotifyIcon(NIM_DELETE, @IconData); 1 c$ \' o6 j: T* S% K8 C2 S
end; * e$ d, \) e: E8 Y7 [* ^" D _
) _) r6 a9 P) {1 m6 r; ~procedure TFrmMain.SysButtonMsg(var Msg: TMessage);
/ b: _* E0 A; ebegin 1 v5 g0 u( X- r. z1 n% I
if (Msg.wParam = SC_CLOSE) or 0 f. B g+ E: e5 ?
(Msg.wParam = SC_MINIMIZE) then Hide ' S, w9 X, D% g7 m
else inherited; // 执行默认动作 / o; C' l4 }/ W* {! e. b" d9 @5 d
end; " o2 e7 L8 B' F3 p! t9 B% {9 [1 Y
$ T2 l1 @* C+ s: i5 Fprocedure TFrmMain.TrayIconMessage(var Msg: TMessage);
, Z, T+ d$ m$ j( t3 t3 y% Abegin 0 `3 ?. o, }6 C
if (Msg.LParam = WM_LBUTTONDBLCLK) then Show();
2 W# [5 Z/ p6 U4 n/ C, t4 Mend;
: i, J1 q- b1 m: J2 `# Q# X" y5 A8 V w5 B; T
procedure TFrmMain.Timer1Timer(Sender: TObject); $ V: r) }! F) _. |
begin
; Y2 M2 a+ u- k8 h$ E% ^AddIconToTray; 5 p- k V3 w' S6 {9 _0 a( e
end;
8 D+ L1 o* e- K) u$ [' j( _: G! _5 l/ t% K
procedure SendHokKey;stdcall; 3 `! E. S' v/ h1 v, r
var c* h( M* _: ]) J3 F" [
HDesk_WL: HDESK; / a2 E4 r% v; r6 h9 v" [0 H
begin
( I d' J/ {+ \) J8 @7 XHDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK); 5 S8 n( b8 g$ L( `
if (HDesk_WL <> 0) then " ~) E; A+ B. w+ Y& {- q- V V* Q* H
if (SetThreadDesktop (HDesk_WL) = True) then . y- u! |- ^' d6 t2 K0 a' c! |5 h) D, Y
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE)); ! u$ m$ u+ t. _: ~
end;
9 ?7 j. o# F& A) K* j
$ l- h. S% L% |procedure TFrmMain.Button1Click(Sender: TObject);
/ X* b* A" V A% uvar ; ^$ S5 O+ z; J4 `9 P; Q$ O, L2 f, g
dwThreadID : DWORD; " V# l& f4 G. T4 q) D5 y
begin ( _3 s5 t8 |( Y6 C; Z
CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID); + s! K* F; ~# Q- w% X
end;
' ?4 S: q0 y) K5 N5 u
, Y4 q* T# T9 {% h( r7 Z. pend. : j8 @" Z' g% q6 K# H4 n: }
& \( @& ?% H9 Y4 b+ f3 `
s5 V- E/ g% I' c补充:
# F. i; |+ v3 B/ N(1)关于更多服务程序的演示程序,请访问以下Url:http://www.torry.net/pages.php?id=226,上面包含了多个演示如何控制和管理系统服务的代码. - [+ f; P; {* ?9 g- I( _
( G% i: b$ U: |9 U
(2)请切记:Windows实际上存在多个桌面.例如屏幕传输会出现白屏,可能有两个原因:一是系统处于锁定或未登陆桌面,二是处于屏幕保护桌面.这时候要将当前桌面切换到该桌面才能抓屏. + `' ~+ y6 j3 n5 E8 Q
3 Q% b5 k- I% ~& N9 F% J9 N% |
(3)关于服务程序与桌面交互,还有种动态切换方法.大概单元如下: & U, Y7 L! A! Z, t7 G* I
unit ServiceDesktop;
9 j1 E: _4 ?8 ?
0 ?" y; H! g) ~9 I% i. F; ^/ P% pinterface $ |# k8 W9 L. U$ s) B M5 M3 D
6 i4 o/ h+ M4 [$ ` H! yfunction InitServiceDesktop: boolean; " P2 R( ] x9 S# t' d
procedure DoneServiceDeskTop; 2 r3 d w9 v$ w" y1 R
~1 V5 Z) s4 H( P* M
implementation 8 ~ ~6 ~- H! l0 U
- k" \- e3 l! P/ ~7 `$ \9 R- G
uses Windows, SysUtils; ; s5 A* F* w/ |; m) s
5 ~! k- h3 J' g* k. K" A4 r; I/ ^6 E2 yconst + x. r1 T. B3 b( `( H% g
DefaultWindowStation = 'WinSta0';
* H& D2 u/ p4 A# j _! R8 oDefaultDesktop = 'Default'; + y2 { }6 `! K- Z) v
var
! t- ^2 B- u B! U. uhwinstaSave: HWINSTA; * B6 A& H8 i% j! u
hdeskSave: HDESK; / c$ [2 d/ a+ P( c, A7 E$ I5 C
hwinstaUser: HWINSTA;
3 Y2 M8 h9 t( H- [' z& \7 G' @hdeskUser: HDESK;
+ E3 l8 P% Y0 Ofunction InitServiceDesktop: boolean;
( e4 H% Z" ~4 A$ Jvar ' Y$ }+ H1 [* W# f3 C( M
dwThreadId: DWORD;
' @8 X8 g$ t4 cbegin
& U, k% ~1 ?. V# bdwThreadId := GetCurrentThreadID; , c+ y j7 v, C+ V2 |6 e6 w8 b
// Ensure connection to service window station and desktop, and
: @+ {4 f' [1 w3 i* ^// save their handles.
$ X9 l8 G0 j2 B* l. c1 bhwinstaSave := GetProcessWindowStation;
4 `- M5 p* }) r2 lhdeskSave := GetThreadDesktop(dwThreadId);
2 S4 e+ B" N. B; c& U# W/ ?
7 t- T' ~, m( G: M; r \0 ^# C; o$ n! _6 v3 J$ q" \8 H/ r4 L
hwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED); , o q0 V; C- E4 \; ^5 o" w% x
if hwinstaUser = 0 then
( m# I+ L8 K; X- Cbegin
i% B$ Q! f G% ^" M+ qOutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError))); 8 p* t; O; O! h* n K
Result := false; . T! [6 j2 q7 x
exit;
5 k0 K+ {/ j% C# ]: vend;
% w4 q- v+ \1 E! t" n) y& d8 W3 H+ ~% C5 E {5 R! ^4 Q
if not SetProcessWindowStation(hwinstaUser) then ) K9 s, _, g; G( h9 H
begin
" S# b J x4 c& H. n8 R+ uOutputDebugString('SetProcessWindowStation failed'); - M2 i7 I& ` y: s' a
Result := false;
6 Q+ Z* U6 Z# V& ^5 l3 m, ?, @exit; # ], Q* T: ?7 r* Q; j2 W- o9 y
end;
9 h1 c% e F! |) n4 Q8 I7 P) ]# f+ U2 ?6 n* |7 Q8 r
hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED); 0 h5 c7 k5 |6 t% q
if hdeskUser = 0 then / Y0 n" y8 v) n& C4 V7 h
begin
9 H' u- p- W l1 t% V* c# f* XOutputDebugString('OpenDesktop failed'); , D- _# Z5 v0 p5 W, z' h* w, _
SetProcessWindowStation(hwinstaSave);
$ c/ D. q& A$ H/ HCloseWindowStation(hwinstaUser);
$ m6 B4 g h- E8 Z ~; r, @Result := false; 8 {2 J; f" h! d4 H8 n3 L
exit;
2 ]8 v, ]2 p, x- O n9 _end; ) p. Q6 ^6 `7 {2 X% U# S. D+ h
Result := SetThreadDesktop(hdeskUser); a& [$ ^0 a9 N* d$ M
if not Result then " d0 v7 o m5 M$ J) {0 p1 V! l
OutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError))); $ m3 d6 z6 ~" N8 k
end;
+ A" q4 L4 i; s- h8 ^
7 [( w# T% V) O) }* yprocedure DoneServiceDeskTop;
. b; s+ V$ ]2 e$ |' O: sbegin
# b E* m7 G+ M* `// Restore window station and desktop.
& F0 h/ i5 }7 g- ^) Y& t* {SetThreadDesktop(hdeskSave); / ~9 y5 b' Z0 V+ n9 o( G5 N$ y4 _
SetProcessWindowStation(hwinstaSave);
; I1 u5 a I) [$ Iif hwinstaUser <> 0 then
8 f8 y8 [; @8 J6 bCloseWindowStation(hwinstaUser); 8 s1 K; y& H M* ?- A6 }
if hdeskUser <> 0 then $ K) y9 Z, F6 k1 \
CloseDesktop(hdeskUser); , A" c1 M- l$ U
end; 7 C h Z+ H, C. o2 Y
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initialization
% k% S% H& h2 j4 T9 c0 b& MInitServiceDesktop; R% ?$ o' z7 k9 J0 Y4 I
finalization : \/ k, y; U$ x- F
DoneServiceDesktop;
' P4 g( S o3 h! |$ qend.
( }! N) D7 {7 ?# n. M% ~更详细的演示代码请参看:http://www.torry.net/samples/samples/os/isarticle.zip
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(4)关于安装服务如何添加服务描述.有两种方法:一是修改注册表.服务的详细信息都位于HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\下面,例如我们刚才那个服务就位于HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DelphiService下.第二种方法就是先用QueryServiceConfig2函数获取服务信息,然后ChangeServiceConfig2来改变描述.用Delphi实现的话,单元如下:
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# P9 m" x3 k. T8 W+ qunit WinSvcEx; ! F& T# q5 t& m. d7 U; \1 W
+ C8 M; L2 J: s) Uinterface - H; n3 l! c' N/ A9 R% h% x
, J/ I$ W' r6 c+ O7 Q5 K- Euses Windows, WinSvc;
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const & |$ |; Z& l0 y4 N- `) S
// : [6 f: C1 Y& @, k! p
// Service config info levels 5 _ `* R) f2 x, ~% u2 Y0 t0 `% R
//
: o& v$ Q' H5 y2 [5 ^' ASERVICE_CONFIG_DESCRIPTION = 1; 9 I" r; G( |3 w+ k) t8 q$ B. s$ A @
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
zan
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