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(1)不用登陆进系统即可运行.
: l p1 \/ Y( ?: J2 N9 h9 }; X) x8 q (2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的. 3 |- X G5 {7 v4 b f) w" p! e
( U! ?8 F; h$ v/ G! D8 V
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.
4 l* h- G: ^! ~% X9 F% | 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: # r$ e( _/ G5 r5 r
, P* l/ I% s4 W" q/ V/ S (1)DisplayName:服务的显示名称 $ X' Q* G4 t3 j8 K
(2)Name:服务名称. , Y q" v3 Z0 z9 H/ e$ e
$ t0 ~$ c1 Z( [7 n 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. / {+ Z# k) R' X
& [" ~8 a3 g. I; C
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.
! C3 s: c: Z. v# Q7 b) x! q1 E% Q% k* {. D: B
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. 4 u6 f+ d/ x$ X/ G2 B! y7 e
4 L* ~0 z* a# o) s* a6 I 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: 4 h$ h* ] j) S9 \+ S+ p0 x4 V% k! x7 J
/ F' S; P$ U- A) ~3 r' U
. b* K8 t7 c$ @5 Punit Unit_Main; 3 Y$ S6 V) c4 ~
9 m- T6 ?+ G+ [6 O/ \interface
: y( U/ m' t7 ]7 ~ C0 r C# R* |8 @' K( r+ x+ I! V
uses
- I3 a9 ?! Z+ qWindows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain;
* z$ s; d& c8 K |6 [
/ I9 r8 J8 E) y- Xtype
' R! W; R, m1 ^% oTDelphiService = class(TService) / y1 w- h- R. Q+ B4 q; d
procedure ServiceContinue(Sender: TService; var Continued: Boolean); % t1 }/ {1 k0 a
procedure ServiceExecute(Sender: TService); : N$ k( W; c0 }
procedure ServicePause(Sender: TService; var Paused: Boolean); ; }2 A, d3 p# b( m/ L X) V
procedure ServiceShutdown(Sender: TService);
# d3 H# b- x, k! M4 A- a) h. `procedure ServiceStart(Sender: TService; var Started: Boolean);
) }% C( ?/ Z& b9 s; w9 ^( p. o0 Kprocedure ServiceStop(Sender: TService; var Stopped: Boolean);
1 h' G6 [4 r1 }* [( P; N" L n. C9 Tprivate $ E: q8 l: _/ ?% X" i+ ]5 W6 |
{ Private declarations }
2 `+ b! V6 b9 U( _1 y% l2 t2 o+ _; kpublic
" [. A! h4 }3 F e! Q& U: Cfunction GetServiceController: TServiceController; override; + W2 S* W. y! o
{ Public declarations }
+ G# V! M- F$ K! l# vend; ( v' j+ G. Q$ b
7 ?. s/ p* i% A3 N3 G, I# h
var 9 S5 l c! x) R* ^8 i
DelphiService: TDelphiService;
0 ]% V8 @* n3 A7 \FrmMain: TFrmMain; 0 j! c6 ~/ v! @1 u' e: a/ y. t% V
implementation $ i; u$ e. N) G& S5 B7 b3 E3 Z; d
U1 ]/ K0 z: Q" Q$ B
{$R *.DFM}
n0 G0 c" ?, b3 E3 J0 G/ D* @; K0 d( N) k$ w) t
procedure ServiceController(CtrlCode: DWord); stdcall;
$ i2 i1 d* M4 ]/ z" [" i/ w Mbegin ; S2 W" ?& D7 d O9 d: e
DelphiService.Controller(CtrlCode); 3 l" W8 Q8 O; W! Y! X
end;
( {% n ?6 i4 M1 T1 D
; E1 y/ A+ H4 hfunction TDelphiService.GetServiceController: TServiceController;
$ {& | a" [! v% f% jbegin + Z6 V: g' T; ~1 f) l) B
Result := ServiceController; . r# Q9 L) S5 f3 Q' P
end;
! f+ P) B4 a" s$ t$ [: H
~ W+ K9 R& b; nprocedure TDelphiService.ServiceContinue(Sender: TService;
1 {- e) Y) n1 P* D$ C" w6 Hvar Continued: Boolean); # r. h0 Z2 }% _; k
begin , P2 ]- G$ ^3 p( ?4 l* G
while not Terminated do ! j& Q, X2 d0 [( U% u: Z, n
begin
7 o: J" k0 w3 B& ?Sleep(10); 2 D* U+ o; l! y4 ?7 g( R
ServiceThread.ProcessRequests(False); ! D) V S8 ?2 D! f% c
end; 8 o; z3 @5 \& R8 I8 _9 X$ O0 p
end; . C3 S, ^- n3 G7 E( Q. ]
$ N7 [1 R& P+ n5 ^2 t. }- j: Fprocedure TDelphiService.ServiceExecute(Sender: TService);
5 G* x7 S8 I* x% @- ~9 Q4 mbegin , K( W3 [7 I7 E9 i6 y1 N( @0 H
while not Terminated do
, i- k$ H8 @' _0 W$ P5 S1 Gbegin
: x8 B' [/ C- K: ]5 ^ zSleep(10);
4 A3 q* b1 u+ e7 f% O0 SServiceThread.ProcessRequests(False); ; E5 S; n ~* T& \+ D
end; 5 B2 m& J$ d0 |+ s. x8 U. b- R6 W
end;
, ?1 s( A/ e* r$ @1 ]( g$ q* r: k: o" J- Q. s
procedure TDelphiService.ServicePause(Sender: TService; % P" _7 H% k; h6 P, d& O. S
var Paused: Boolean);
2 e& j! Z2 w' \! r* wbegin 6 Q6 B$ n- I6 q! j
Paused := True;
% M+ q; j5 g7 U! B, A- l1 E1 jend;
" u I3 S) I9 n0 r7 D. L( g3 f1 j8 E* S' e
procedure TDelphiService.ServiceShutdown(Sender: TService);
* h8 v8 _. R$ w" R$ {, Y) Nbegin
+ r- m m \. m) `' A6 p& P. {0 x4 KgbCanClose := true; - w6 }: G4 z2 q$ X5 U
FrmMain.Free;
! v& o& K- Y- {- a" [! l/ d9 DStatus := csStopped;
1 z* E0 v/ c: Y( f: Z) @1 HReportStatus(); . b3 j) F# e/ s- |& ~
end; # l1 q2 F0 o% C. Z% v! s2 y) |) `( i
/ E7 g% v1 ]( S* sprocedure TDelphiService.ServiceStart(Sender: TService; 4 _& Y9 U: |# S2 U+ O- p, d! r
var Started: Boolean); $ M$ E0 R& {+ U8 W3 x
begin
$ b, s. n7 {# v8 z- s7 J6 \- g0 bStarted := True; * [( D( Z( |5 V
Svcmgr.Application.CreateForm(TFrmMain, FrmMain);
k7 t+ ]3 z R1 d7 C6 lgbCanClose := False; w7 A* q, q/ z; G2 V$ Y4 w! L
FrmMain.Hide; 7 X& S3 p# K9 x: \! l4 X
end; $ k8 C' t" z \. L* k: R
8 [8 `+ q' w$ u( lprocedure TDelphiService.ServiceStop(Sender: TService;
. _: [3 B! H5 |1 M& ^( Cvar Stopped: Boolean);
/ b4 R! C/ y* v$ E$ g: r! W% ]$ Y1 Pbegin 1 v4 s) J9 ?0 c b$ h
Stopped := True;
9 u. J4 E3 C N; Q$ agbCanClose := True; ( @" f: V' z& j4 `$ s9 B; ^
FrmMain.Free;
. R8 p* W7 \, z. Zend;
5 U. j" B( g1 W; R* [- G" o \2 K9 t+ }. ?
end.
! w8 D! H; ^9 Z1 ^* O+ _& u* t( G7 S8 k& _) a: Z- ?4 `
- \# I" g7 B+ M7 C4 m5 m1 Q
主窗口单元如下:
6 u( [* k! ^& z" F5 a) O
& c* N, z7 x; B* M: p Runit Unit_FrmMain; * G& g3 {' o4 G# ]3 w0 x( ~
* x& \# B' [& \4 \* M* W5 [% `: Winterface
# o7 V7 A( w9 d0 Q X. X) L; L% H* d7 N
uses * X# g& u5 i- c b( u! P; t5 e1 W
Windows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, $ z. ~8 h$ s8 I T
Dialogs, ExtCtrls, StdCtrls;
) K9 t7 R; F) B* ^0 M4 h& q5 _* G
) G: a) x4 w% F; n1 @" Econst
& G/ [9 X! r0 C# I& f6 BWM_TrayIcon = WM_USER + 1234; # c Q5 V* R5 t3 Q
type
7 d# @* w7 f9 S6 |' t4 h, }5 uTFrmMain = class(TForm) 5 f$ V& g+ l' ~4 H& h' w) H1 e9 l
Timer1: TTimer; L. Y$ ^) A! D- @9 t
Button1: TButton;
" G; J& ^; Q$ ]' _+ c: Bprocedure FormCreate(Sender: TObject); 2 B" k* L1 j; H8 H2 M& P% K
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean); + V9 }- B* L! z/ l$ U7 k
procedure FormDestroy(Sender: TObject); 7 s/ P! K6 S' M9 @/ R+ Q8 Y
procedure Timer1Timer(Sender: TObject); " n0 [* a, S3 s9 @
procedure Button1Click(Sender: TObject);
0 Y0 e# A5 x) b6 y% U5 o& kprivate . g& M6 g& j8 Q" _
{ Private declarations }
' ?4 i" _' s2 \$ YIconData: TNotifyIconData; : X) z0 ~5 m% P8 G: S
procedure AddIconToTray;
4 R, l: t& ~1 I$ f% s% ]. N {procedure DelIconFromTray; 9 R) E A' `% [3 K; H( L
procedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon; ' V S) N4 K. {7 B7 H) O+ h
procedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND; ! j- R' f% x# l9 W
public : b/ s- l6 B- r
{ Public declarations }
9 M' Z' B& w _; T" v6 _/ Yend; & A: S# W6 l- s1 B# F r4 s
% Z# h6 Z; V. K
var
- O d$ z+ y1 GFrmMain: TFrmMain;
" J5 w. X9 w) DgbCanClose: Boolean;
$ b; m8 v! a: e9 S, a* r1 Qimplementation
0 e C$ `% H) K$ C: S) F$ c w$ R" Z8 W- I# b8 w/ o
{$R *.dfm}
# [; y K! a9 ~, A0 D" \3 h$ V+ O9 V$ ^# t/ q! g- w+ B
procedure TFrmMain.FormCreate(Sender: TObject);
+ |4 a& H0 ]1 c, R ?$ L; Bbegin ! n! v2 W K3 a' f
FormStyle := fsStayOnTop;
) q0 T) v a# v+ k7 eSetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); 5 }( n3 \6 S9 V$ e
gbCanClose := False;
8 L( g3 y9 _1 y/ CTimer1.Interval := 1000;
; y# g5 b" C. E9 VTimer1.Enabled := True;
5 W, G1 G% m! Q7 ]9 J2 m3 b. Vend; % F A; [" e- }5 e5 x0 X# u# T
: W/ r3 H$ O( L3 D' |1 A2 k+ }
procedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean); ! w7 H. A5 E5 ^ h4 ^
begin
2 @4 @( v6 W5 z7 T8 }CanClose := gbCanClose; " U, x1 ]' e. K3 g* H) }
if not CanClose then
8 _# [, \; l! a- r* d1 Z; R: _begin 9 F$ U9 @- H2 e7 d! b- u9 v
Hide;
/ v4 m3 O$ c5 A/ oend; 5 n- v5 i/ ~" V' q; o
end;
$ @" {2 O* M, C M( `5 y. L, ?1 ]" M. t% U8 E
procedure TFrmMain.FormDestroy(Sender: TObject);
; h1 Q2 s/ u; c+ m. @) dbegin ; k/ _3 }* {1 H1 C [3 U/ E8 z
Timer1.Enabled := False;
/ v, h+ x" N5 r* j J/ X5 ~! XDelIconFromTray;
* T0 F2 l8 @6 c, J. r& L! T# @! |end;
. b( j8 m- h8 Z. J# x3 p3 V/ Y( x' X$ Y, {
procedure TFrmMain.AddIconToTray;
& J; ?: `8 a: c" A9 Y# Ybegin
1 w1 n. {$ X% P* t, kZeroMemory(@IconData, SizeOf(TNotifyIconData)); : h) }/ P7 F7 B; a3 Q
IconData.cbSize := SizeOf(TNotifyIconData);
- a: X& Z' D; O1 a" o1 R' }0 @3 sIconData.Wnd := Handle;
- F3 O- i$ m4 ^' A. P% e) j* D, GIconData.uID := 1;
8 c% u. P# _3 p N( E' kIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
' U3 V) G, u- ~+ ? K. X* mIconData.uCallbackMessage := WM_TrayIcon;
/ V" b+ D0 s& p8 WIconData.hIcon := Application.Icon.Handle; 4 ] a, i" C/ _' T e$ i
IconData.szTip := 'Delphi服务演示程序'; 0 [3 s2 W! L4 t- D" A: Y8 e# u
Shell_NotifyIcon(NIM_ADD, @IconData);
( C! \8 z: X) b& Q: {1 f1 Q2 Bend;
! M0 } Y! G: u- l: p' }% U
x% Y' B3 y5 V$ M- Bprocedure TFrmMain.DelIconFromTray; ' D: D+ K# u: W! l! i1 N# g
begin
9 O+ Q( f b( s' _8 fShell_NotifyIcon(NIM_DELETE, @IconData);
: x- U2 x* y! D: ]! iend; ; O6 }8 l* {. C- [
3 w( [+ @* A, H6 U
procedure TFrmMain.SysButtonMsg(var Msg: TMessage);
^9 h# V; Z; q. s0 ^1 gbegin 2 \. ]" P) f. ?& d
if (Msg.wParam = SC_CLOSE) or ) `' q- P) X5 v" T' N
(Msg.wParam = SC_MINIMIZE) then Hide 6 }1 T' c# [) u2 B
else inherited; // 执行默认动作
, K0 ~7 f2 j( c# _end;
! ]% K1 w/ }& n% c1 a' \2 n1 G6 W$ w9 Y) h0 d9 O# p) ?9 n
procedure TFrmMain.TrayIconMessage(var Msg: TMessage); 1 d: s j( F$ v$ \. W- K
begin
8 C! o* Z' O- ^3 bif (Msg.LParam = WM_LBUTTONDBLCLK) then Show();
g. [- _9 X% mend;
& `3 w$ |8 [( r
, N x$ ?( j) k: V. @! _procedure TFrmMain.Timer1Timer(Sender: TObject); % H8 a9 ?' n& j1 k1 K! v: @. i
begin " S6 g( \" s A) I8 h& u
AddIconToTray;
) _0 X; y! U, B5 Y9 cend;
+ ~9 P1 M% t: \- v! b6 U% Q( }' a' H. l3 b& J7 F
procedure SendHokKey;stdcall;
- y; H, Y4 W: s! J M7 k/ Jvar 1 }/ V/ G1 r! p8 I+ P6 g
HDesk_WL: HDESK;
. Y ^5 t I! p% v1 x wbegin # D& U+ ?: l3 B4 N5 t8 g8 k2 M6 @
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK);
4 J# d* s1 J6 B* J. f+ x, b, Uif (HDesk_WL <> 0) then
! C% u* D7 x; |0 Y: B n( lif (SetThreadDesktop (HDesk_WL) = True) then 0 I- @2 B1 H& B# K5 e! J; M, N
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE)); 6 Y% O o" G% _4 M- K+ V
end;
+ K! Q% M' P- ?$ C( B5 x
/ ]8 G9 v) Z3 rprocedure TFrmMain.Button1Click(Sender: TObject);
; o6 I4 M/ s! d9 c8 j5 mvar
8 m6 U, v) D! y+ kdwThreadID : DWORD; 7 r3 M2 B. @! P1 B9 [7 M
begin
: P+ v" r4 t }% [+ j8 _CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID); 1 i: h3 Y; V+ K% c7 O; h
end; : p; j# b. P- |& }% }$ |
" P* C* n& q1 W+ U% H, F
end. 7 q; K, f( i% r) Z
* X" V/ d: t# |8 V6 _
, f, ? _- Y$ q
补充: 4 N; L }' T! ~4 H
(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.
$ G' N9 w# b5 R1 l3 {+ F
e( q6 b7 h- X: q3 T' w(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.
# i# u4 Y. o2 } J# _/ Y4 d% l' u3 ^. f8 I) R0 v4 d- O
(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: ' t* D- Z* E! h4 Y1 L7 Y
unit ServiceDesktop; * _& a9 [+ p- U5 ?; z
1 P r: ]" v( e5 I
interface
~) U5 ?7 q5 P, O7 w# H+ @
( c" D4 w: ?& C4 Pfunction InitServiceDesktop: boolean;
5 @, J) I1 e$ @' j e4 H7 k' \: eprocedure DoneServiceDeskTop; / |" p0 m: k. Q% e1 p. `
, U' I# s; F/ `; H& J9 bimplementation
6 @" z$ s- y$ B1 ]4 z7 B: Z1 u4 a
) \5 M9 H1 N2 A4 K' C, luses Windows, SysUtils; ) b3 m4 E0 ?& W$ L
# D- j! |/ x O* K9 F4 x* Q
const " L0 P6 k: E' P" W6 S3 b2 P
DefaultWindowStation = 'WinSta0'; 6 p* ]! Z: M& f, ?" f6 C
DefaultDesktop = 'Default';
' G& x( u' W0 E# Q o6 y: l5 f/ Lvar , Q n4 x+ m* k$ }" d5 ?
hwinstaSave: HWINSTA;
9 R# X1 M8 y2 VhdeskSave: HDESK;
$ v+ ^. d" h. X8 {hwinstaUser: HWINSTA; 9 q! v+ @0 v& l2 c% e
hdeskUser: HDESK; , L+ W/ ]- ]) B; \8 F
function InitServiceDesktop: boolean;
j6 D, v) g+ b! E; }4 Pvar ! N/ _# X; }9 G Z P% A( P# c/ N2 e, \/ }
dwThreadId: DWORD;
) x4 U( @7 T0 |6 o; h2 x% d0 ibegin * q b# A0 Q7 q* u
dwThreadId := GetCurrentThreadID; 8 v# V" B8 O% K3 N9 i3 @
// Ensure connection to service window station and desktop, and ! @# Y2 I$ r+ E" g. N& h( _, g
// save their handles.
: D5 D- J" q) A5 {; U1 dhwinstaSave := GetProcessWindowStation; , o# R! F) x5 Z' `! o5 a* n. g0 l
hdeskSave := GetThreadDesktop(dwThreadId); : [) b2 {! m4 Z. M0 H: G: K
_3 ?- k6 b- f' }, E, N
8 r$ O$ N: b- W0 m* N7 F( QhwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED);
' d# Z4 K* M6 i/ R7 j! _if hwinstaUser = 0 then 0 X) O# f- }% x. p
begin
9 C6 D/ F8 d- G+ D; zOutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError))); 8 V) L2 v9 {; u
Result := false; ! U/ W D# _+ q# h( m
exit; - c3 h* L: D8 D W( t
end;
! l% y- m! A1 y3 A/ k8 h6 p4 ]9 A) E: p& ]+ j& s
if not SetProcessWindowStation(hwinstaUser) then 4 r s- Z6 i! `+ ^
begin
2 Z. g# V( O; |+ w X2 jOutputDebugString('SetProcessWindowStation failed'); 3 C3 h+ w, h% M8 N1 V. ~, o
Result := false; & h3 K9 C, C* i H
exit; $ u% k0 e% f8 F5 y$ z
end; 0 B( v; B: h: I$ X$ ~" B
% V1 X7 W4 H1 Z4 A
hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED);
1 y$ R' ~4 k/ C$ ^" R# a% pif hdeskUser = 0 then + ]/ @1 i& t4 k, [+ U0 }
begin * u$ |0 _) n. ^8 i; A" S8 }
OutputDebugString('OpenDesktop failed');
& d% ?9 G* `7 K4 qSetProcessWindowStation(hwinstaSave);
* w2 _6 T' A$ DCloseWindowStation(hwinstaUser);
! U0 ?) ?' D( [3 f+ [Result := false; . ]$ p6 d5 E t6 a4 h* O
exit;
1 g8 O+ [) s! G0 e9 k- J7 ] {end;
4 }4 v' c, d! vResult := SetThreadDesktop(hdeskUser); ) H$ R; J, w8 E: i# M
if not Result then % K) ^# J* }+ s
OutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError))); - Q) H1 l& M/ Q6 u6 N7 {
end; , O: ~% }4 u7 S9 Z P
8 {2 h8 A: F4 p
procedure DoneServiceDeskTop;
9 Q+ V" x6 l) o, Lbegin 6 Z4 C' X9 x% ^- G: q$ u
// Restore window station and desktop. 2 r$ m2 }' ?( a, a8 l0 z
SetThreadDesktop(hdeskSave);
6 i) f# m! ]$ O4 s. KSetProcessWindowStation(hwinstaSave); 6 n" |6 X: {( h/ x' f
if hwinstaUser <> 0 then
6 K. S% P6 Z7 rCloseWindowStation(hwinstaUser);
& V! u# |* `) B+ S) e9 M7 R. G' X; ~4 aif hdeskUser <> 0 then f {% i: w6 \; h2 {3 u
CloseDesktop(hdeskUser);
+ Y+ r/ d# {" Q, |, v! t+ dend;
8 e$ K- H& M K) G. \
) E( c) q' ]9 Y8 Xinitialization
|. J& V% d8 ?( YInitServiceDesktop;
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! j) [8 m+ _1 q2 dDoneServiceDesktop; . H6 i# c5 a; k! C) @: e
end. " `/ N ?; z9 l) G5 r- @* A! \
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: , d- K5 C! _% w* M; C5 P
" B2 F$ J' g" M1 Funit WinSvcEx;
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interface
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: Z2 L/ t6 E3 T+ @0 X" K6 Quses Windows, WinSvc; 3 D4 e2 d0 K4 s. G1 e
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const / X4 S0 g9 i) F1 E% G' r
//
& @; k, r4 B, v. A// Service config info levels
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U0 ~' }# A( D- @5 r$ hSERVICE_CONFIG_DESCRIPTION = 1; 3 Z4 U# E+ y+ f
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
zan
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