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(1)不用登陆进系统即可运行.
, S. D' ~- X9 k2 K* e+ J5 G (2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的. 7 x. i" J N4 Q' O
2 y/ l6 X/ r) J9 {! I2 [ 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. $ k& ?" c: P0 P3 {6 }" J6 k
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:
& N( ^& ~" Q. u* A# M5 K o& K3 B1 v( s) p. j; K
(1)DisplayName:服务的显示名称 ( G9 S0 e2 W- o Y; Z# E5 ^
(2)Name:服务名称. & Y# ~: w7 V1 T" t/ L& \ \3 |
( R6 {) v7 b/ { 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.
8 y! s/ w7 r: B& p8 U* I j$ k9 ~$ I
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. . v& `: G9 {% H/ o2 H9 E( J
3 {) c5 w3 _" [0 x. y3 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.
6 w. I1 i+ r0 w
/ D+ S2 J9 ~- o* _4 z" t 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:
; r3 C A9 F/ p1 V
2 ~( j3 h, m$ y' M/ H# v9 T% M5 w+ c/ d, @$ L- ^
unit Unit_Main;
0 K5 R) U& i5 [6 u5 Z, M7 Q+ F* b+ B' }
interface
9 P/ D2 H x8 O/ l6 M" E" n; K/ y' ~
uses % j2 J4 J0 i7 W0 P1 t# E @ W
Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; ) a; \' K5 A( Y, y3 f/ x% K
/ B. C& l! h: ^. ?( q; m
type
( ~/ R0 j x; Y4 F5 m+ b$ CTDelphiService = class(TService)
6 M# }* n2 {: |6 |procedure ServiceContinue(Sender: TService; var Continued: Boolean);
, x3 B3 P3 W4 ^7 p+ Nprocedure ServiceExecute(Sender: TService); ; J! J% C' D# j7 f% j) l, U# j2 M
procedure ServicePause(Sender: TService; var Paused: Boolean); ; G5 H( P# ~4 S- a8 ^; K; L2 g
procedure ServiceShutdown(Sender: TService);
+ I$ D% ~. L. p. L Cprocedure ServiceStart(Sender: TService; var Started: Boolean); 8 T# B+ Y E5 r+ x9 {, c5 e) s
procedure ServiceStop(Sender: TService; var Stopped: Boolean);
$ u( J* N( {: ?4 i9 Fprivate
5 y2 b8 a$ E0 a( z; v" N{ Private declarations }
! F. ~+ d" b& I7 X0 h \6 i. qpublic ' }3 b) w$ B' p! @ l3 a# g: T( a& ]0 d
function GetServiceController: TServiceController; override;
. Q$ t* N4 d$ }7 f$ g{ Public declarations } ~+ y/ t( m- H" C( K% G. T
end;
6 A: Z: @) k$ {" D7 g: Z
' c/ F0 j F6 b5 s. v( B- K! A4 Xvar ) K; W+ o# d9 D& w& ^
DelphiService: TDelphiService;
* g! Y! z7 B4 u1 E2 `FrmMain: TFrmMain; + l! g0 ]; x8 S
implementation
9 r+ r9 T; ] o: O3 X
: |1 n4 x; K" O+ x7 `{$R *.DFM}
! O% z5 o3 E3 @1 Y
! ?4 _( t3 x$ k& H! vprocedure ServiceController(CtrlCode: DWord); stdcall;
8 {" \# Q# j9 R% V$ [begin
5 u& M& B1 t) S+ ]DelphiService.Controller(CtrlCode); ( l5 W+ ]9 B4 S+ a& y) u0 D
end; ( x8 [/ S# D3 ]: t) c5 O9 R; x/ ^
9 Y S8 I/ `* u; T) m7 d$ Hfunction TDelphiService.GetServiceController: TServiceController; , U8 z( O- ?) W- G0 b
begin
$ V% r7 j6 N( JResult := ServiceController;
, }+ F' u/ X/ [2 ]end; $ H+ C: H# Z; X# A" `" w, g
/ H& V5 ?0 [6 Q- E- y: r; Z
procedure TDelphiService.ServiceContinue(Sender: TService;
6 `6 ^ t5 [. V9 y. |+ X+ evar Continued: Boolean);
& J- I' s/ h$ u" @begin
4 p9 C7 D! o3 h7 Cwhile not Terminated do
9 h2 @1 Q' K7 P% k' obegin
& X0 |0 X3 E, LSleep(10);
0 r) X+ s3 u/ ?ServiceThread.ProcessRequests(False);
1 O! x% G" g, K: mend; $ c3 b& r7 M% m# i4 O
end;
, ]9 N7 C+ |& z2 E; f$ ^6 A
1 G4 L* }$ i! y/ k0 Iprocedure TDelphiService.ServiceExecute(Sender: TService); 6 o6 v" C6 p6 c/ k7 j: o' B5 ^
begin " c4 k) o0 e/ ]( r" Z7 K
while not Terminated do : w% _" H; j/ V, c4 {) L
begin , m3 _7 @3 e6 q' x5 p% y" c
Sleep(10);
9 T( B$ u; E) t1 FServiceThread.ProcessRequests(False);
# U( [% ~4 H: x2 Dend;
2 q# r8 P" t- g+ ~- H' ?. |end;
; S6 H5 @5 S7 G! U+ k
5 X) [/ A/ m c+ d+ @3 i7 |6 k! sprocedure TDelphiService.ServicePause(Sender: TService; 3 d3 v7 u4 ?' I) Q, D7 H
var Paused: Boolean); % c3 W, Y7 q3 A6 W( M& ]* g. q6 v
begin 8 B3 }9 J$ |5 M, {
Paused := True;
' h+ x$ T- N, O! iend; 7 T- ]! z' ^! {6 [7 J6 m1 x
6 w% k+ j1 Z7 Q( D) `/ Jprocedure TDelphiService.ServiceShutdown(Sender: TService);
- [* z. G9 K+ B0 C6 Wbegin
. N' Z4 T, _- L7 h. B# J' _gbCanClose := true;
+ }( h; K7 x4 s& R; w% ~; nFrmMain.Free;
0 x) i- l% d9 FStatus := csStopped;
1 u2 a: t3 C0 v2 lReportStatus(); , @9 M/ Y. @! N, j7 w% F4 o
end;
# o5 w/ D. w' N" B) {
* I+ U) o+ S" Y+ c, Hprocedure TDelphiService.ServiceStart(Sender: TService;
) L% z' v1 w; \var Started: Boolean); ; k% x& M! [2 B; S- E) H. c" K
begin 2 x9 b6 _6 x6 C. T+ p" b
Started := True;
6 z5 e$ U" A. ?2 T2 y: ^% Z7 xSvcmgr.Application.CreateForm(TFrmMain, FrmMain); ; D' k5 \+ f; z8 L; T( o
gbCanClose := False; $ m: ^ l4 X# _ Y7 l7 i
FrmMain.Hide; 0 G) J4 L& w5 y# p' @/ `
end;
5 R: E i; l4 V$ T
/ I/ [7 t* M$ F1 Nprocedure TDelphiService.ServiceStop(Sender: TService; 6 j8 j9 ~2 I9 r) M5 B
var Stopped: Boolean);
; S0 [' e2 ]) r! N1 @' ?begin 4 |7 c Q4 F& @ P7 e& [6 U+ Q
Stopped := True; 5 e% n4 M W/ C% D1 [8 M
gbCanClose := True; 1 ?+ i; T1 S0 j1 Y' f1 w. q
FrmMain.Free;
; u" ?( _6 ~5 E( nend; $ U+ Y2 {* q5 e0 S1 t4 e
' ?4 p' s0 g+ H
end.
6 z! S! y! a* o9 F( e% ~, }7 Z8 l T+ ~5 x8 ]. p
7 S2 {* B) h* y) y$ S主窗口单元如下:
5 s7 i( x/ q n( b2 V7 x7 h- O) _8 U% h/ u
unit Unit_FrmMain;
2 Z7 i; V' |2 r# o* v" z
. n2 e; h( [9 c+ [& R: b9 [* x$ tinterface 0 F; s) {& U$ P$ l
7 Z8 v, j/ T' n! l+ R# D& Duses
9 s p8 H4 v; r9 D5 VWindows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, + A+ D: |9 e: i9 E" }( q
Dialogs, ExtCtrls, StdCtrls; ; l! b$ W5 U+ u: I& X' j
) V6 [7 m- v, L: A! ^
const
( K, s. f. F! t7 X/ ]+ V- T& J* LWM_TrayIcon = WM_USER + 1234;
' S" q, {8 [& x& O( ntype % h7 t1 N) _% S- r6 w- U( D
TFrmMain = class(TForm)
" a7 m9 v1 T2 m! N1 G% n# |8 kTimer1: TTimer; , Z# C$ u1 B- e( ~# q1 n$ X
Button1: TButton;
8 {2 D v! j6 x# {2 x, @+ i F1 C6 vprocedure FormCreate(Sender: TObject); 7 [) f" p6 }( T; _$ ~* `& E" s
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean); 4 H. j0 A8 A- t9 B, C4 Q4 v
procedure FormDestroy(Sender: TObject);
' q9 H0 c" E' x# w% l& C% @procedure Timer1Timer(Sender: TObject);
' n2 b0 ^1 a1 U* d3 I- aprocedure Button1Click(Sender: TObject);
% w& v" m# k* \ i& V% R& {8 nprivate * K* l- j& N8 ~" X% ]0 K
{ Private declarations }
]. y0 s" N# K, D4 G O: qIconData: TNotifyIconData;
7 D, a! w; ]4 o N1 e3 h1 [# jprocedure AddIconToTray;
% ~8 ]% p1 N0 P9 F' `procedure DelIconFromTray;
1 s' i% q+ k5 E) e$ Zprocedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
8 z6 B$ y6 i7 t" t# Eprocedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND; % V# B. q1 j+ Q8 V: r
public
( { |* I' p K{ Public declarations } 3 i( ^) j0 }6 o- v$ k4 M
end;
: Y o$ V. Y+ m9 X1 `% \7 i- [7 p+ N% h1 z
var
3 O$ J% o) _+ OFrmMain: TFrmMain; ' |3 U# _6 J |* T7 s
gbCanClose: Boolean;
s8 f1 r0 b( Himplementation
+ m; Z# e% T8 e6 Q0 H
) ^% V! }" G5 s{$R *.dfm} ; F/ ?, L# B( B/ b V. u2 W3 K, W, l
1 s/ n5 F6 Y7 t! e/ v5 L2 O7 [procedure TFrmMain.FormCreate(Sender: TObject);
y1 l) D; {- ~1 e' E$ G2 Nbegin
, s4 d. |+ `3 E* m8 @FormStyle := fsStayOnTop; 8 b* t: P! K: L' Y; q! O
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW);
0 ?5 L- Z" z& ]2 f2 @gbCanClose := False; ! n* b+ Z r; _% P- I& h& l5 N# c+ o
Timer1.Interval := 1000;
3 m# z) \2 }2 ] d1 pTimer1.Enabled := True; 8 R' C# t4 {, q$ G1 m3 w( a
end;
% w' \* t" ]! J
4 ]1 L+ ?; O: F' }3 rprocedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
$ i1 m. h' z# s( Ebegin 9 [: ^0 A) w2 C" C) R1 ~% t# ^5 q: O
CanClose := gbCanClose;
" s7 P' O& x1 M0 J; C3 eif not CanClose then 6 T6 D% y: ?2 `
begin
4 ]! [& l- t0 F; GHide;
+ G5 i! z. A) p. s+ Tend; 2 m/ n4 D5 q( `- M# q( w
end; 9 `( k, e- r8 D% J
& f) f# J. M; D, b0 E3 n) _# B. w p
procedure TFrmMain.FormDestroy(Sender: TObject); ; v0 U9 [7 [4 V: Z
begin . \( n" s0 V7 ` s' n' A
Timer1.Enabled := False; & C& [. x1 f8 a( f
DelIconFromTray; 4 q9 \1 {2 q w
end;
. }5 C6 }. c* m6 D
- z) v7 W- ^6 P; a1 Q2 Qprocedure TFrmMain.AddIconToTray; . W7 i. E# F, ^- @- @- g" K8 O
begin ) G. U* y. }1 n$ R
ZeroMemory(@IconData, SizeOf(TNotifyIconData)); ' H6 I3 f- a% l1 C- P7 D+ |
IconData.cbSize := SizeOf(TNotifyIconData);
& H7 X9 Z! j0 N8 s }( N. G1 K% A7 f5 HIconData.Wnd := Handle;
* i( I6 a/ o% U$ W2 mIconData.uID := 1;
2 I8 o; K( u: F" g. T4 W" qIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
* z+ S! F& t" R6 {) _7 WIconData.uCallbackMessage := WM_TrayIcon; 4 Z$ t$ c4 M; R; Q) e
IconData.hIcon := Application.Icon.Handle;
( e0 s7 S5 D8 ]6 ^IconData.szTip := 'Delphi服务演示程序';
4 a* s# _/ T' B9 M( a) _/ nShell_NotifyIcon(NIM_ADD, @IconData); $ B% Z1 h% h4 f' l+ ^1 m0 S1 w# [
end;
0 e8 T4 n8 l, e2 _
c5 t0 M! d" u+ Bprocedure TFrmMain.DelIconFromTray;
# B+ F8 d) \. Abegin
( A: C5 `4 t( }1 c O+ _ s. b/ b& d& F' \Shell_NotifyIcon(NIM_DELETE, @IconData); % I5 Q2 G4 `; K
end; 7 Y6 C- N1 c+ i2 A2 H" z- q
' G- l# q- {* c
procedure TFrmMain.SysButtonMsg(var Msg: TMessage);
+ S4 }2 r, Y- s# v5 Ibegin
7 p2 S) o* u/ l5 k. L& cif (Msg.wParam = SC_CLOSE) or
) U. q1 X8 N- T3 n4 ~- R(Msg.wParam = SC_MINIMIZE) then Hide
6 x' C% F; V2 D/ O7 j& oelse inherited; // 执行默认动作
7 g$ \5 {5 }. ?end; & y: B6 I, ?: x0 ]; ~" T
) e) n; Y( _3 S2 L: J# ]1 ?procedure TFrmMain.TrayIconMessage(var Msg: TMessage);
3 V7 q7 M/ b) b! ~0 T, Cbegin
! o+ [" D6 P1 w9 G# Jif (Msg.LParam = WM_LBUTTONDBLCLK) then Show();
/ Q2 p: V9 z b H. hend;
* {7 p8 H7 {6 ]3 _. E6 c x0 O( [. i, B1 ~: J1 P$ c+ J5 [, u* q' \
procedure TFrmMain.Timer1Timer(Sender: TObject);
6 B9 Q: B. t% u; s; Abegin g9 V. Z2 m- J1 a* v4 b& k v3 e
AddIconToTray;
6 ~5 c7 z3 M `% x0 [end; 7 V% l+ y1 x) p0 |, x6 r4 c
, p1 y: l# ?/ v3 Yprocedure SendHokKey;stdcall;
# N- P( J, d$ |) E' B$ v. Z \var
, k% \1 W4 ` J+ h/ `# PHDesk_WL: HDESK; 4 @( j% \( _0 s2 q
begin _- u% `8 \3 w ~; s$ @
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK); . q5 u( u( F) a ~1 a9 @5 k
if (HDesk_WL <> 0) then
$ S0 N8 s$ ^/ i' Eif (SetThreadDesktop (HDesk_WL) = True) then " q& n! V/ i& |! n
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE)); - L4 e( V3 {7 C& o/ v- \7 \+ Y& H
end; 5 b: T, o2 h7 n7 i: _7 D o) t
' L# T- y' p. o) ~& |8 W) ~procedure TFrmMain.Button1Click(Sender: TObject);
0 c7 _1 J/ P: I! f3 v# X. H- a& s6 ^8 Dvar * A; w9 k9 V/ s# w+ _$ i3 h9 Q. `
dwThreadID : DWORD;
6 N H2 G) O' t4 K' }9 ]& k/ k) Vbegin & b" i n; {! ?" n0 ~$ g5 b
CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID); 5 z1 f4 ?) L( f% ^1 N, o4 b5 E! K
end; ?" S" P' j6 Y
, |; [8 t/ K/ q% K* H
end.
8 h8 k: W- E1 ~% h& b( @% h' q0 s5 g, b+ T
8 w, v% c& k3 p; Q- o9 g0 ] j补充: . Z# _6 h# H0 M& c5 y3 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.
; f) X+ ^/ c# u$ Y# V o& l6 R9 a) n) K9 _
(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/ m" b/ h* E6 e# H* ~% [) l' @: z0 R
(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: 3 j( v- ^. V& H5 ~
unit ServiceDesktop;
- S+ E; H) ]& q2 h. i, E& \6 ]1 W3 [4 c% l" | y7 u* ?
interface , p3 i; M% y6 b* b' E; D
& x7 C) {; X" F( o+ Vfunction InitServiceDesktop: boolean; , e0 v. x! h* e$ T& S& M
procedure DoneServiceDeskTop; 5 K# j; M7 G1 b5 w
3 z# b0 u. q& E2 t7 S% @4 [implementation - b+ N7 ~' V! ~+ Z
% c' z$ A6 b( K3 e) b7 _uses Windows, SysUtils;
- Y9 ]# H7 c- a$ F1 @
& f4 {- z2 h* o8 h- a ^const ; q5 t, x5 w, m) q# x- h* l$ O
DefaultWindowStation = 'WinSta0'; + W4 D2 [/ f0 r
DefaultDesktop = 'Default';
4 E' ?( T! R; zvar ) m1 [& [+ Z4 A& ~5 P
hwinstaSave: HWINSTA;
$ W; A- \0 ]# A6 N9 C3 `hdeskSave: HDESK; & J" t+ H& S8 D
hwinstaUser: HWINSTA;
4 D$ s: \. B; phdeskUser: HDESK; ( C$ j9 R0 y1 g3 c
function InitServiceDesktop: boolean;
- W# p7 m# L+ j- Z- `4 U/ jvar 9 {! o5 F) f4 f$ r6 k+ S
dwThreadId: DWORD;
9 [2 w$ S) }& t. K1 F) r' Kbegin
* X, Z8 `. v3 N' w% O0 t; rdwThreadId := GetCurrentThreadID;
3 m/ k* F" \- L- S// Ensure connection to service window station and desktop, and $ k: X% d& V8 O& t/ g
// save their handles. 2 Q1 I! t; B9 N$ i9 i* g8 x% d
hwinstaSave := GetProcessWindowStation; 0 K3 V9 d/ @9 N* o6 w( e" Z2 ~
hdeskSave := GetThreadDesktop(dwThreadId); : n) E( U6 T; M6 [
/ K+ E- B! P0 q- [! V, {
7 n! u- V0 q3 I9 T5 W; {hwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED); + I1 g4 h8 n7 _* M, R8 a
if hwinstaUser = 0 then
* r4 W+ l' _. Y. P/ \9 p& obegin
a1 z( R" L) d3 d1 t y# jOutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError)));
$ c$ M+ i7 d1 J6 R. q7 s) HResult := false; ' l& _1 J: k* } j5 D4 B# Z8 A
exit; ' H5 c" Y$ s: K7 v- s- {* s( n8 d. a! H
end;
6 ]( a1 S0 D0 {0 o- ~
2 r, q) r. D# H; L! z" | N2 Tif not SetProcessWindowStation(hwinstaUser) then
`( L; g% g. c& {begin
! T- ^( K0 O5 R% Z1 r' QOutputDebugString('SetProcessWindowStation failed'); 3 ~" i" U* y: s
Result := false; : k0 s: _% p/ ]! N8 b7 L
exit;
" F# \( g% [/ C4 a' G/ ?end;
' S/ B& [' \4 S( I" G* u, U! N% i& i% M
hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED); / ?/ |- X4 }# z' [' A( R
if hdeskUser = 0 then
9 y8 c+ C# i! M/ p7 {9 J8 {. P' qbegin
0 A/ V4 m8 y7 l; ?% c3 vOutputDebugString('OpenDesktop failed'); 5 d& d' L6 }, _8 H9 h
SetProcessWindowStation(hwinstaSave);
+ P) [8 H# X9 g. `1 h5 MCloseWindowStation(hwinstaUser);
: \8 z: Y* c4 C2 j1 wResult := false; % _0 z$ ^9 z& ~
exit;
, ^: C1 _9 G6 J) H( K! C$ Pend;
/ T: K9 C; T2 S' C3 ?# gResult := SetThreadDesktop(hdeskUser); 7 l( m: R( v: Q( g9 B
if not Result then + M/ `& \, Y6 n: Z- [* J5 `- e& R2 Z6 j
OutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError)));
& F6 b& l A" Z) }end;
' }. {2 E3 Q: M+ d3 x% u) ?# P" ~5 b$ E- N- b1 e( x5 y
procedure DoneServiceDeskTop; - G1 S& _9 O! M8 M; O3 r9 I
begin 2 Z( Z- s0 `; D* `
// Restore window station and desktop.
6 E5 W* W3 w. M; B; M# uSetThreadDesktop(hdeskSave); + a! O H1 z. c/ v; i. Q& w4 ]
SetProcessWindowStation(hwinstaSave);
/ ~+ Z/ n8 k0 w! L* w+ e% `) |if hwinstaUser <> 0 then $ n0 t7 f' R9 z1 x
CloseWindowStation(hwinstaUser);
4 n. ^% c a4 D/ Z) Kif hdeskUser <> 0 then
1 ?5 K, N9 k9 q) C T0 gCloseDesktop(hdeskUser); % u- ^0 W: _: a8 K! g
end; 2 z T5 A. v* }5 f o# U! g
) C% T; C, Q- C4 V- X
initialization 3 W% ^4 k* S' {2 z b7 Q; Q7 y
InitServiceDesktop;
& G" j( g' ^: K: _% @finalization
$ D5 `, Y4 z+ t j8 y) U/ H+ ?7 xDoneServiceDesktop;
6 r- ~% K# m0 u, ]) oend. - n( C1 g6 w7 n" M( Z6 _$ v5 X7 I0 n
更详细的演示代码请参看:http://www.torry.net/samples/samples/os/isarticle.zip
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, E; ?, [0 P& j6 z6 x, K(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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6 J% w$ u4 ^: A+ Yunit WinSvcEx; 7 Q' S$ G& K4 K
1 P# ]. f6 c; i/ rinterface ! k7 D1 G+ e3 n3 L
; q% R8 F' o- N. R* K/ ?8 b# guses Windows, WinSvc;
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, Q, `& t$ Q% z9 `: m5 tconst
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// Service config info levels / g0 [- x5 Q, o
// $ [. l! P! n7 J1 C! P
SERVICE_CONFIG_DESCRIPTION = 1;
/ R& y0 k" b2 `: E4 t/ iSERVICE_CONFIG_FAILURE_ACTIONS = 2; |
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