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(1)不用登陆进系统即可运行.
3 Z. q! ~. c) c2 M1 M9 Q* N (2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的.
8 x2 t- _8 @+ E% y5 P( F! i$ m1 A: k" g) L; x* X+ C* R% }' O
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.
* U8 w% D- r$ k( h+ P 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:
$ W4 @, b L! Y/ ?: z; V4 q5 u
(1)DisplayName:服务的显示名称
% a6 Z" X9 b# G0 R5 f+ U (2)Name:服务名称. + Y+ V2 w' [9 h/ c4 R0 }9 K8 t
2 V) [2 Y( f, [ }
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.
4 m) \" d$ B& L7 M% T. @ Y( `& a2 E4 y. r7 a
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. 8 k4 A8 M& f$ Z- J
; n7 b# ^( O2 U- W6 J2 ` 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.
N# y7 O% f8 ?$ b9 n
1 ^4 c) ^% `# M4 z 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: ) f/ ~( R* a. }1 d3 N
$ W& A% l! C0 A: P( f8 i3 n) H
unit Unit_Main;
F5 L7 s( z% h! h) ^6 s) u& V0 P! A3 h! ^7 b/ I
interface
$ H8 G1 D* n/ D; m* Q7 e
2 K% k0 u1 B( uuses
! D: B& W5 D& P1 wWindows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain;
6 L4 M; Y8 q. A$ Z& `0 j- a c$ r2 w; d {4 `1 n
type
# n4 `( ^: `9 R% VTDelphiService = class(TService) % @ V' A9 t) z$ @/ _
procedure ServiceContinue(Sender: TService; var Continued: Boolean); ! n% \+ N; U: u6 h( w+ Y
procedure ServiceExecute(Sender: TService); 4 n0 g; J+ h3 s
procedure ServicePause(Sender: TService; var Paused: Boolean);
/ z# J; O. u1 J9 ~* |) E# Bprocedure ServiceShutdown(Sender: TService);
) p9 g) T; z1 S! x! H' eprocedure ServiceStart(Sender: TService; var Started: Boolean);
: s H1 N# [2 Fprocedure ServiceStop(Sender: TService; var Stopped: Boolean);
0 ]! w3 G y" e5 i$ O4 a$ C& Kprivate & e/ H+ W2 s, X2 G4 k- |
{ Private declarations }
2 P1 M( [% z9 t. ?& f' U+ W* ~, L. apublic ! h4 Q) ~" T& W. `* ~" U
function GetServiceController: TServiceController; override;
& l3 c$ g! z! w j( H{ Public declarations }
8 W6 c$ B0 q, V' P* m) `end; # l) R$ D6 K0 c) E4 Q- l8 k, B8 |
2 e' p+ p4 k" W1 y. K3 [( O
var
& l$ }- N" I* iDelphiService: TDelphiService; 8 c/ F" q6 x8 J& U
FrmMain: TFrmMain; ) S6 w; Q& Y$ o
implementation ! `" G+ M$ ]0 U- \9 X7 V
! v$ }& _- c! P5 ^7 @+ o
{$R *.DFM}
& }. A0 H" `' F! |/ U/ d9 e# ]( |; d* }: ?" N7 ^( G2 ^
procedure ServiceController(CtrlCode: DWord); stdcall;
- z" p/ }! S9 Sbegin
1 ?6 m8 [6 _; N2 q$ M0 A6 Y4 a+ qDelphiService.Controller(CtrlCode); 6 O1 Z1 O2 l! x m
end; ) t! C, I* j% w# Q' W
; W( d6 m7 G" Y5 y8 L
function TDelphiService.GetServiceController: TServiceController;
: H6 F7 u/ J: U2 T, tbegin
) x: R* j& U7 c- s; @3 ~Result := ServiceController;
, b; u$ a4 \3 v) g: P2 f* Fend; n6 z' G, o; a
5 e' \ l- P$ d" F6 h- h+ e' _
procedure TDelphiService.ServiceContinue(Sender: TService;
8 G8 G, @2 P; F3 evar Continued: Boolean);
' F( g: h( S' F+ H$ x* Cbegin 9 @" f1 f" A6 ^7 d6 _
while not Terminated do ]/ T- E4 G9 [% \3 V
begin
) |2 x) w5 D3 f% z! qSleep(10); + L' T+ m% l2 ^3 J
ServiceThread.ProcessRequests(False); 6 t6 f g# u! v* N; N. Z3 N
end;
+ Q4 h6 H/ ?; x- R# q* cend;
3 V! u C* b: h9 ]7 @8 Z6 { D
9 u, a: n2 U+ v: H- ~. J3 Fprocedure TDelphiService.ServiceExecute(Sender: TService);
( r8 c: k( v# X: g4 O* wbegin / n4 c& Q( c3 H! F* X
while not Terminated do / B+ W% q7 I* i( k4 [& W2 w
begin - M* p6 X" w. i
Sleep(10); 5 m. w3 y) {) u0 H, I
ServiceThread.ProcessRequests(False); ) m6 e/ ?# o4 r# h0 Z/ @' @
end; q: n0 `1 ]: k) S
end;
/ Z3 x! k* a& A7 n- s2 A6 C4 Y/ u5 q q, A" n
procedure TDelphiService.ServicePause(Sender: TService; , X$ ~! R. C$ d7 O/ l$ I
var Paused: Boolean);
$ f; E" Y2 o7 o; @+ D. lbegin 4 `: C$ V1 e1 t
Paused := True; 1 r2 v, F7 p& L, @- i8 d7 K
end;
t C: i1 y+ B( r) m6 S9 a$ v
v- F$ w. A2 Gprocedure TDelphiService.ServiceShutdown(Sender: TService); % H% Q, h0 m u. T1 B! K( M" \
begin 6 v, M6 G; Z* o. A8 M9 K* Y
gbCanClose := true;
( ]# l d5 O0 t" L6 h% {FrmMain.Free;
: ~, H2 }) i& [# u' NStatus := csStopped;
3 w1 V) W7 L: s3 g* C ]" q2 mReportStatus(); : Y, Y/ Y6 Q' }
end; " a5 {0 q8 }# ~- j0 A, F- D! i
3 |# |* g7 X+ q6 Q9 P+ iprocedure TDelphiService.ServiceStart(Sender: TService; 9 |7 ]. ?- U3 J1 S$ _
var Started: Boolean); 4 p- V' _: Y3 j& P* D" ?/ O8 \$ j
begin
2 i8 X: A2 h% l6 _0 e9 m7 aStarted := True;
* ^! s, P0 N+ z; ?% s* C) ~6 GSvcmgr.Application.CreateForm(TFrmMain, FrmMain);
; I9 D- L+ D8 y) H& ]; ~' H, w3 v0 s! UgbCanClose := False;
3 }4 j3 g W* k; A) W4 BFrmMain.Hide;
7 S! ^" q9 t8 b' m9 Nend;
0 U9 S5 z' p9 R: x8 g* `, ~0 C$ T# F% `" i$ E
procedure TDelphiService.ServiceStop(Sender: TService; " J$ i! o- L6 }* Z* w4 \$ F g9 L
var Stopped: Boolean);
, U$ A) w/ X1 P/ A2 Bbegin
( J3 F2 W+ m: y$ M% O- jStopped := True;
( b* y/ B" t3 \, ^6 CgbCanClose := True; 3 T% r) g3 N& B" f; \/ H( q
FrmMain.Free;
7 n/ f/ @/ [$ m. B/ [% H9 G9 Wend;
! v+ s1 w& T7 j7 J
1 a8 R8 g2 G8 b* `end.
u5 ^4 Q+ U; s" f4 y7 v
9 Q% }7 [! T, U1 A' u |6 O& u7 ~! E d3 k$ F% o) Q
主窗口单元如下: ) [8 |- e3 [8 A2 |* u3 h6 K
) @0 R& ~. }* L) K6 Kunit Unit_FrmMain; ) O. U% c! k& }
& t- J' b [& u( B. R% ]
interface " \/ a, T' u" h
3 M9 B6 w* U j6 u0 j q6 a# }uses
' ?% ], Z2 W) \0 Q' t/ iWindows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms,
/ \- `% N2 Y" j7 }9 A) @Dialogs, ExtCtrls, StdCtrls;
7 y6 w( c* ?4 S& s8 @5 y& A
% E2 h* `2 {+ M+ Hconst
7 F/ z0 K' G' Q; d! O$ R& pWM_TrayIcon = WM_USER + 1234; , B, f! w7 g/ u4 i8 I7 a
type 3 m, f& m# _% q' ~5 N5 G
TFrmMain = class(TForm)
- I3 J' X% a2 n5 F* L9 }Timer1: TTimer;
: q; Z) I2 A& B$ |4 RButton1: TButton; 0 p# g/ j$ {3 \$ S2 w
procedure FormCreate(Sender: TObject); # |6 T8 _5 W' ~) h+ h
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
9 ]; r6 Q: |' uprocedure FormDestroy(Sender: TObject); " [$ N+ H( }* y5 @$ r- M- S. f
procedure Timer1Timer(Sender: TObject);
- J0 h/ ?# p3 I# j# F, |0 B, B! Pprocedure Button1Click(Sender: TObject); $ X! A$ E/ ^) A. y/ T3 Z
private 8 |3 a; Q: }/ [3 T" M! K/ A
{ Private declarations } 6 ^5 v7 @5 o! i* R4 D+ y
IconData: TNotifyIconData; 2 N+ {' k3 {. R, ~3 P
procedure AddIconToTray;
/ ~) K2 y6 t9 C/ a) [ ]& Iprocedure DelIconFromTray;
! g) s$ r; Q5 S' Tprocedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
: e. p n9 Q# a3 |8 Sprocedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND; t& i/ d& g1 x( _2 H
public
' \, d2 a2 D1 c- w; W0 Q( d{ Public declarations }
, J4 B# {/ U0 {: Mend;
5 k: a) H. X# ?4 y: G: g* x A
4 D9 k) G( d( p8 D' E) \! pvar 6 K9 ~ ~2 R- I ]& y" B
FrmMain: TFrmMain; 6 ~6 K! [# h* P) Y8 P
gbCanClose: Boolean; 4 ]+ k2 \/ `$ V2 R+ U
implementation " ^1 D9 M; J8 h# h# Q& E; s& v
! x5 |/ s% @6 X V% U V+ u% e
{$R *.dfm} / I9 s% @5 g6 N7 X& a& F7 d0 f
3 `# G) W6 m/ T- _
procedure TFrmMain.FormCreate(Sender: TObject);
7 J, J# v% G& y6 Xbegin
0 o- G! W. v$ v: kFormStyle := fsStayOnTop; 1 I3 }( L" T3 y' g1 |4 q
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); * I" j/ y; I9 [. f$ U
gbCanClose := False;
! V! E' @- q' B7 jTimer1.Interval := 1000;
6 [/ W3 I8 z) _ n+ dTimer1.Enabled := True; ! E: T5 v# ]0 e& A( z9 l
end; ; n# Z' r6 U E2 V9 x
1 v( f5 b* ~0 ^4 R, E, d! uprocedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean); . ^! D' x& s+ v* i9 w
begin * @0 a8 i) o; v
CanClose := gbCanClose;
6 w3 Z& e; m/ O- y {( lif not CanClose then $ s$ M3 s1 K+ A1 a
begin
6 ]. `) K5 M9 X0 `% }Hide;
2 z& v. {) _( Eend;
5 u8 j0 O- Z9 W, fend;
' r8 ~: X& \. N: O0 [) w, [9 W9 x5 a. b- t; K r8 c2 x+ F" m! ~
procedure TFrmMain.FormDestroy(Sender: TObject);
k( G. G% ~5 T7 A. ?6 ?# u8 |begin
2 _' |2 {9 p; ]& }: T( M! gTimer1.Enabled := False;
) N! B% U8 f$ ]$ l1 m. MDelIconFromTray;
, H/ Q( j6 W! [' }3 M0 {1 g; t/ Dend;
% c4 g4 J9 F6 {- U- [8 J3 O9 { N8 H* ?8 z, Z
procedure TFrmMain.AddIconToTray;
1 ?! u! n/ l; L# ~begin 2 c' g, l% x6 m0 B+ F2 v: v8 K
ZeroMemory(@IconData, SizeOf(TNotifyIconData)); 9 o! L% t' n; J$ z
IconData.cbSize := SizeOf(TNotifyIconData);
" v3 X' J/ V7 o7 ^: ~9 fIconData.Wnd := Handle;
; b# P- O% B# m6 S; W% [" P" {IconData.uID := 1;
& e+ {* D' B3 Z4 GIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP; * }% t2 O1 K; \, ~4 W9 L
IconData.uCallbackMessage := WM_TrayIcon; " r; S+ O8 M. R+ C( Y3 E& `1 G2 |
IconData.hIcon := Application.Icon.Handle;
; s7 T5 q7 T+ S3 h" mIconData.szTip := 'Delphi服务演示程序';
5 g$ R' g. ^+ O2 ^9 F4 r9 w5 i* uShell_NotifyIcon(NIM_ADD, @IconData); : U( U1 W2 R! D2 k0 Y" I8 g
end;
' h2 `% X# w3 S. p" I' z
" X5 ~* s5 j; }1 K& T7 {# F! e" pprocedure TFrmMain.DelIconFromTray;
# N7 i- i% M9 U: I, h' J/ @begin
5 Q* ]$ w t4 {. T* J4 k% H1 {9 mShell_NotifyIcon(NIM_DELETE, @IconData); 4 j+ o- q8 e* `8 V8 M' I
end;
- U$ ~8 C4 Z8 O$ H+ O2 z0 w$ G8 Q4 |9 Z( O! _/ [1 D
procedure TFrmMain.SysButtonMsg(var Msg: TMessage); ' O4 G2 x$ f2 z9 s D; w. n- a( \# c
begin
$ V2 I, @8 i" {9 B9 {6 _9 w4 @if (Msg.wParam = SC_CLOSE) or $ c+ i8 y# o6 r, t, r" t( L
(Msg.wParam = SC_MINIMIZE) then Hide
: ^% r- t( H' p: `3 s* pelse inherited; // 执行默认动作
( b7 ]0 C0 d7 ?$ b/ @+ C8 send;
7 O3 y. ]% d/ b) l$ D$ X9 i
+ E% j( F/ N8 q- H* K* Qprocedure TFrmMain.TrayIconMessage(var Msg: TMessage); 2 e. m5 ^9 {3 q3 S3 z* W- ~4 W
begin 4 H2 L' i% [+ W6 Y; v) k
if (Msg.LParam = WM_LBUTTONDBLCLK) then Show(); " x- ~0 D4 i7 W3 [ \% q$ j
end; % L. A: T1 \0 Y' x# t) W' U8 Q [/ O
0 u, D6 }6 }$ i! Uprocedure TFrmMain.Timer1Timer(Sender: TObject); 3 [$ @3 k/ _7 s
begin ! I# m1 O1 H0 V
AddIconToTray; d# K9 C6 x6 D" L" u
end;
7 U% Q7 z/ @- b' m O4 F1 i3 O# ?0 ]3 T9 ^) e
procedure SendHokKey;stdcall; * V$ ]( R( T; s, i3 h0 k" R1 P7 `
var 9 k9 r4 J& ^4 m
HDesk_WL: HDESK;
: }1 A$ |5 A- L4 Y6 Ybegin ) A: _* j# C! d
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK); " Q& X% _$ Z/ o: L$ g: C8 o" m' r
if (HDesk_WL <> 0) then ! T6 U9 Q# B9 I5 }1 H4 R" m
if (SetThreadDesktop (HDesk_WL) = True) then
4 O4 G. U1 k8 o" M6 l5 m$ M/ I$ @# PPostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE));
X* t, u$ M1 `end;
8 A1 y5 R. Q2 j: {/ R. Z, O
( |5 ?2 y% I! o$ s" r; q* V( ]procedure TFrmMain.Button1Click(Sender: TObject);
- r/ j; E$ _% J( R& R( `- Mvar + E3 z; ~. F2 M# b8 u5 l
dwThreadID : DWORD;
% K- {/ y- ]4 `2 `7 W: X( J R1 Bbegin - U) w! J* w8 Z3 X
CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID);
, e) N& s& R4 gend;
, c' I( V) l% m' I- B
) r0 N# z! L; U- Oend.
! ^3 A" t, O% L) ]# G6 m$ ?, t
- [1 N3 C5 o1 A9 y" k2 k+ q# f3 x( N
补充: : C- i( i* R" ~( I
(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. 9 `5 v( o3 g! K @2 D# J
# M/ j I; |) ^8 Z4 z4 ^& P
(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.
4 b1 x; m1 q0 g' L. q7 N6 B6 m. R! ^4 }# o( |$ z
(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:
4 e' m. k+ x4 \2 A0 c" u4 dunit ServiceDesktop; % {$ O' t& \4 r; Q2 w4 b0 @% E
/ c4 K2 t* {; n
interface
4 T( A: `/ Q; k8 e9 T! q# y; x2 w( N) o9 A4 {/ n6 p) v
function InitServiceDesktop: boolean; : U5 Z/ P/ e7 _" Q: ~! @. H9 _
procedure DoneServiceDeskTop; ' ^( k6 z. e; e, ^+ m8 S9 {
; D8 Y( Q* B& X7 L. K: A
implementation 0 ~/ W3 Y& Y: V" ~9 m* ?
8 d' A& q# u- I' @, Q) u$ l+ [0 ouses Windows, SysUtils; & q4 Y& |7 z( h# o) r
7 L+ a w" I) G# T( Oconst / z! c3 J- F9 ?" L9 d
DefaultWindowStation = 'WinSta0';
) w0 Z/ ? N$ ?) S! N5 ODefaultDesktop = 'Default';
" a& p- {) D' w% w/ s4 }, _var
5 l# _7 Q w8 j7 A; x, w' l' \& {8 }$ RhwinstaSave: HWINSTA;
: N! [8 v& P# @5 b- z; XhdeskSave: HDESK; 1 O* r) t0 b" A; o. W, [1 X
hwinstaUser: HWINSTA; + P1 T& K; @ L# g( N# g" c
hdeskUser: HDESK; $ A, O& g) K3 ?9 {
function InitServiceDesktop: boolean; 1 _7 J6 n0 X, C9 g0 I
var / n/ c- l4 {( Y$ r; a. o" n& a
dwThreadId: DWORD; 7 K2 R: }+ p8 S0 g" j* U1 A
begin
* [8 y% m( p6 q, d" mdwThreadId := GetCurrentThreadID; 3 e/ h3 B1 X. A/ F! f# q8 {
// Ensure connection to service window station and desktop, and / ]3 ~: `( ]0 }& c9 S
// save their handles. / r- i+ c% J0 u8 l5 ^4 s b* K
hwinstaSave := GetProcessWindowStation; e) B( j/ |5 q3 R1 J4 J9 u
hdeskSave := GetThreadDesktop(dwThreadId);
G7 |! d) c9 o* O' Q8 p d2 s$ c6 o) ^+ F) q
{3 `+ N4 h) x. k$ i `, D5 y
hwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED);
* v {' ?$ i9 g* u% L- |" Y! w. }3 |if hwinstaUser = 0 then
; M4 E" \" _' \. K9 {begin - @3 C/ K V( n6 k U
OutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError))); ( n9 d6 G$ j Y2 ~$ P
Result := false; 0 Y/ P% b& D$ I4 s) e$ _
exit; 6 O2 }9 W) `& g; c3 L; |
end; ) H7 E8 O: _0 {& a+ {- b
; U2 _6 m/ i$ l' ~6 pif not SetProcessWindowStation(hwinstaUser) then
8 ~1 c$ D. U. p. tbegin * A1 p0 A3 S4 |; \! O8 f
OutputDebugString('SetProcessWindowStation failed'); $ d9 U5 }* h/ h9 n
Result := false;
: E9 w9 z, i j; r8 y8 g/ w8 Xexit; - n' i% h; d5 a$ a4 q, X- _
end;
& V. k9 ]! ^+ ^2 S: Z: n) V+ m/ e* ?7 o$ q& Y3 @' K0 G
hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED); 2 ^1 l( [8 z$ V2 U5 e7 i# X' Z
if hdeskUser = 0 then
9 \& }; m( f4 N* G8 B m/ Wbegin
3 X+ E( j' I: a7 g- b8 s( _. EOutputDebugString('OpenDesktop failed');
1 ?" Q9 ]3 M' D% n% }" o6 ]1 y# pSetProcessWindowStation(hwinstaSave);
% z/ z {: Z# ] c* [7 }1 e0 SCloseWindowStation(hwinstaUser);
& g% h$ z' k; sResult := false; 0 t# x! R% L& X" u0 c' t
exit; 5 T( L$ z8 B8 v# ?# H! }, g
end; " f9 A2 n9 _# L9 f8 h$ V
Result := SetThreadDesktop(hdeskUser); & o2 }3 V' O3 j* V7 ^' l; E
if not Result then 0 K4 W. M$ v7 e, x I4 `
OutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError)));
. a; O- n" C, J# }4 aend; 8 n& m7 O+ u! ~2 Q! Y
/ i0 \5 N' [. r
procedure DoneServiceDeskTop;
9 ?" F3 {. ~3 U* F: |' Q e8 T. bbegin
% @8 p1 f" g$ ?" X0 F" H// Restore window station and desktop.
7 l8 ^( N1 L. P) Z$ ?4 S. x/ i, NSetThreadDesktop(hdeskSave);
6 s( C/ o& P& _SetProcessWindowStation(hwinstaSave);
* e. y; R& Y0 F; Oif hwinstaUser <> 0 then 1 L6 m8 S7 p. O( f' u2 Y" _
CloseWindowStation(hwinstaUser); . Q9 r8 @# ^+ m5 z
if hdeskUser <> 0 then 6 C8 n+ T6 @" Y" d9 B$ b
CloseDesktop(hdeskUser);
9 I1 z* D* I; |* Pend; ! ^) U2 R6 b# [
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initialization ' y D Y, E9 k s$ C
InitServiceDesktop; ( \/ C) y2 D1 k
finalization
: R6 h2 Z6 U7 d+ t L' B* X; X9 @DoneServiceDesktop;
! m, L5 l+ T" d3 cend. * P' f9 J8 _! L; _( Q
更详细的演示代码请参看:http://www.torry.net/samples/samples/os/isarticle.zip , ` [1 n; v$ @5 i
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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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unit WinSvcEx; ) Q! Z; u7 T8 e- S' H; X
/ r6 n( i1 w& w9 u8 K) E+ ainterface ' y4 a& f+ l% r1 [
6 J/ b. J, @* b8 v6 c/ r8 {# ^! @uses Windows, WinSvc;
. W/ I. T/ f. B$ w5 s4 a! t! h, t+ {
const 5 d/ t$ V" d( @
// * z5 e+ \! h1 W$ }4 Y
// Service config info levels
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SERVICE_CONFIG_DESCRIPTION = 1; 8 g- Q8 e% G3 n% \, o: e; A3 Y
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
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