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(1)不用登陆进系统即可运行. ; G+ d! k7 M# _: z$ k/ x9 K5 T8 x
(2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的. , R" V3 Z: `8 ?( b, o8 d8 C
3 t2 @$ k8 z2 L
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. $ n. q* V) M& e! N) ~5 X: x
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: 8 F @% B" H6 A# P9 N+ D& C
- D/ Y% `7 T4 f$ c) F6 w( t! ?' ]
(1)DisplayName:服务的显示名称 : T+ c( ]/ ?* b$ ^' \
(2)Name:服务名称. 0 o9 M5 [; {& z& r0 ^: u
& G1 J& A. I6 ^3 D4 y. _
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.
' t% D, p( n1 J$ Z) a6 k2 z# [' I. v7 k
! `( L2 Q: \6 f6 L- N; c" y1 K 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. * A/ R; i% Z. |% E) T
5 L. a% K- a9 `- s' Q8 x; {
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.
) m) ]( l; Z) M* f# l: K/ u, X/ E9 M3 w* \, J* n1 j4 V
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:
+ y+ ~ A+ E1 d8 `' V. Q( ?, {+ {4 }$ n; b/ H7 i4 v* y( F; ^
3 L8 |2 T; C. U3 T r: E
unit Unit_Main; 4 f1 h; @) S+ ]- e- r! J
9 F; h% t2 g& m7 o9 ^interface 2 C! D( r' [2 Z+ v5 d
- @7 Y# @0 V) t6 I2 ^
uses & C$ [& T; }1 [% t
Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; 8 \+ K" P" U+ I5 F, w; ~$ e/ W
1 E+ G6 G' ^) |3 }) B& C1 Xtype
# G7 L/ Y9 b$ S, N( s- ]. RTDelphiService = class(TService)
, C3 H6 K; B% @) L4 V6 Y% G& qprocedure ServiceContinue(Sender: TService; var Continued: Boolean);
, H% a; E& d+ p! bprocedure ServiceExecute(Sender: TService); / ?) y% ]4 _: R4 r/ B e
procedure ServicePause(Sender: TService; var Paused: Boolean); ) m- \& Z/ E0 i
procedure ServiceShutdown(Sender: TService);
' g1 ]" Q" U% @- V; D- T3 tprocedure ServiceStart(Sender: TService; var Started: Boolean); / `" l! Q' a1 e8 C4 j. ]7 c
procedure ServiceStop(Sender: TService; var Stopped: Boolean); % S0 O) E) z2 R: L
private ( ^ S) F) E8 H5 r
{ Private declarations }
# [8 p# k+ l1 n3 |8 K7 R4 v& |* hpublic
4 [' c8 L, k5 o/ d1 L4 c9 _! cfunction GetServiceController: TServiceController; override;
; \4 e# b. t+ K5 ^{ Public declarations } 3 {, x2 t* k2 ~
end;
1 z/ E, C( i2 K5 R, O
; Y0 A/ P6 [! b* V& _var
" q; ~8 h% V# n2 Q5 ~& nDelphiService: TDelphiService;
" y4 r: K& F8 u6 G! ]FrmMain: TFrmMain; b% ?( U, w, G Y: C; H
implementation
7 ^: p1 I' f" P. a L8 E5 Z% Z, A3 S9 n0 X9 o7 F+ H7 V
{$R *.DFM}
# {* M8 w) V1 G% z, H/ C. p
" ]3 t( b! `: A# ~1 c/ E' |procedure ServiceController(CtrlCode: DWord); stdcall; 1 |! g2 Q ]% m, l. J. B- `) S9 o
begin
- `+ A! I% ~4 q7 [DelphiService.Controller(CtrlCode); & F8 w/ G6 m1 @$ [. l' W
end;
1 F8 b. Z. ~. D0 o! f: e# s) j L9 t/ Y7 j9 D& i3 q
function TDelphiService.GetServiceController: TServiceController; . z4 B% A$ f. _9 R
begin
1 Z% S! I4 U/ s& pResult := ServiceController;
9 S0 W$ u# b# R4 J' g. Dend;
: \- M9 W& Q; q: f. {+ p% Y, P9 N, m4 ?
procedure TDelphiService.ServiceContinue(Sender: TService; ) y( r! q$ y8 w( Q: C
var Continued: Boolean); 9 R! C% Z, R8 h& H* `
begin
/ y9 Y# A6 m- E/ u- d; _) n. m4 H1 ewhile not Terminated do
6 a0 K' P+ Q4 ]8 ~5 G2 }" ?begin 0 @: J$ a7 M4 X$ _
Sleep(10); + V5 `$ f7 J* ]& R j
ServiceThread.ProcessRequests(False);
% M) u. d( {7 l* k7 m! C! Mend;
2 y4 \3 F/ Q5 M8 lend;
5 `" n( h2 N, ?! k- g6 T
* g( P1 ]% c5 L K1 {procedure TDelphiService.ServiceExecute(Sender: TService);
& W5 S2 d9 F4 H8 R/ u: `; ebegin ; @4 }* Q) G' D: \
while not Terminated do
9 ]8 q$ t) s+ |" nbegin
O0 K2 X; K! }+ ASleep(10);
9 y# X0 [' R, R" h0 @! {6 PServiceThread.ProcessRequests(False);
7 P r/ ]9 |- I" }+ Iend;
0 }7 k( H9 {# ]2 P0 |9 Tend;
# t8 r; P1 y: _9 g
0 j( J/ L- ^* a# z& z6 @procedure TDelphiService.ServicePause(Sender: TService; 1 b+ t$ t8 E1 i% Y ]: o4 c$ c6 ]
var Paused: Boolean);
5 b) D9 N2 M. ]5 Q$ \/ a+ Z- Nbegin . _8 S" Q! s! u5 W* R
Paused := True; * a4 {; }8 i1 L+ }/ _! F
end;
# N: X9 ^! r. h; w
- H0 j6 ?0 o# t* h4 [. `procedure TDelphiService.ServiceShutdown(Sender: TService); " M- }3 y: L4 h: \" r
begin 7 b- J9 q, `' w9 N' Y
gbCanClose := true;
. i# q6 x- |, s# n# Z7 m, g6 |FrmMain.Free;
/ l( I, ?* R: l: x: Z( h3 I: CStatus := csStopped; 0 s3 E. ]. y( l; w% X' G
ReportStatus();
[7 R( R( I K6 {$ `4 @& E1 m8 I; |end;
5 t( ]( G( |% W$ ~# T, o
( F2 O" y' V3 i# E& E' J Qprocedure TDelphiService.ServiceStart(Sender: TService; 9 J M! O- h7 z1 V0 }: A% Z. G- _
var Started: Boolean); : u& O/ ^. U4 b n3 o; q
begin
H% @ r) ~9 V# E* nStarted := True; & Y; U. R! d* W: s% q. C
Svcmgr.Application.CreateForm(TFrmMain, FrmMain);
$ X& S, }1 r" b) y5 P" r+ c* mgbCanClose := False; # U/ Z, b: @6 R
FrmMain.Hide; * m* P( Z; E9 J( b5 R5 c/ W
end;
" E* O, [6 ~% d2 S) Y! [" V
. {- S" n+ p/ Aprocedure TDelphiService.ServiceStop(Sender: TService; / H3 L' C& z. J8 {0 {8 v5 b- [) r( X
var Stopped: Boolean);
" V: f/ `& o7 n- zbegin % i% T, L; _+ b7 [& b* k
Stopped := True; * c1 w* h7 c8 J8 y5 N1 ?
gbCanClose := True;
* Z1 K) b S) |9 w0 d+ LFrmMain.Free;
( K J- R- W: o! c, h% Kend; / D5 t9 J8 T: Y* s
! @$ M1 H% M7 G. F2 }end.
8 O, @$ _' N! M1 ^* c: k
@+ y" D5 R7 h; T/ i. ?- E- ~& V$ w& b5 J1 H# w0 A7 {& W4 n
主窗口单元如下:
9 I& ^* R5 f! C1 {8 b& ]- K0 N
- D4 B; e' d+ x5 Lunit Unit_FrmMain;
# v6 |& n @. o
3 z" A; e2 \. ?9 Y/ A: {. s. r4 cinterface
: A# K K8 k! P, F! r* h% ]5 D& y+ A8 ^$ ^8 X* _: @
uses
- D3 V# w6 B+ w2 v8 KWindows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, + v+ ~* e# f, G& A2 H4 G, s
Dialogs, ExtCtrls, StdCtrls;
" }0 s, }& V" C" z5 y: S! @/ {1 Y* t1 k6 U$ k
const 7 [* {; W6 k7 _5 G& ]* b
WM_TrayIcon = WM_USER + 1234;
; c( W2 q; s: D$ p' ltype
; b7 e {1 m! r" W# STFrmMain = class(TForm) , g. z1 G/ x5 Y% \
Timer1: TTimer;
/ d0 }% ?: [6 v: @7 f# F% F4 v. zButton1: TButton; 5 t o) m; q6 ~+ B$ e, K
procedure FormCreate(Sender: TObject);
: Q/ F' G8 F6 Q" f) G) ?! |procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
7 c+ E. U9 t2 c% {, R3 `procedure FormDestroy(Sender: TObject); % ~& }6 P5 b' ?+ D% n
procedure Timer1Timer(Sender: TObject);
. Z8 I+ A( q8 U D+ Zprocedure Button1Click(Sender: TObject);
/ X% ]% {. G0 o$ l$ Sprivate
1 @6 e& @% l9 S{ Private declarations }
. H3 \# y. A/ `IconData: TNotifyIconData; # W' \2 Z' B8 M0 V* j
procedure AddIconToTray; + M# a9 l$ [# C* w' O
procedure DelIconFromTray; 7 u# x! q4 u! j' F% J
procedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
' e+ I) p v6 a, ?) h2 v% B+ sprocedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND; # f7 t2 x' Q( X7 R
public
4 }# d5 u6 e! k* O& s{ Public declarations } ! D) G7 I6 y2 E4 L( o
end; % w6 s, ^1 P1 ^. j
% e V$ @+ P% L! ?% N* L9 ^
var ' ?! Q3 k7 r3 O3 p* r
FrmMain: TFrmMain; . [ _! I) e9 c2 q7 ~
gbCanClose: Boolean; + T7 e7 g' O4 } g
implementation : k6 D* v$ V7 y
1 |0 ~0 f% U: n1 X3 ~{$R *.dfm} - n( F9 t6 T% n1 i
5 e5 m) W8 ?' _% c1 Mprocedure TFrmMain.FormCreate(Sender: TObject); : V7 H H) N9 O% ^! Q& h" R! V% X
begin
7 l; h5 s D5 Z& [& L) D iFormStyle := fsStayOnTop;
# A& r& {" M) @/ s" `6 GSetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW);
5 p+ T. ]5 K. K" o- x% x0 \gbCanClose := False;
( m7 L- n, b4 t! x& o5 ~, i& `' y$ t+ OTimer1.Interval := 1000; % r D `5 K0 D3 f$ `- z( j, u* H8 |
Timer1.Enabled := True;
" G% ?$ y Q+ ?' ]! q( J6 U0 @8 X$ bend; : S, @) a. P( ~* e- _, m
" @0 Y W$ B1 e, r. {$ m0 }- Kprocedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean); 4 i" O O( i( l# X7 O
begin
9 @% K3 P2 Y! q2 g3 A# jCanClose := gbCanClose;
# ^# j: `9 f5 J, q2 t# [1 |if not CanClose then
$ O W$ u3 p6 `begin
+ T# Q7 H9 ?( S) G. ZHide;
% a1 l% g" T6 k$ t' v* ?end;
1 N2 S. e6 k& Cend;
8 c8 V) j$ R* K
# G: U/ \5 s! w% n2 tprocedure TFrmMain.FormDestroy(Sender: TObject);
% l$ J+ z, |; q. j' P+ |! i7 ?begin
% L' k: e! s8 ?5 uTimer1.Enabled := False;
. S' _5 `4 e# K5 ?2 A; _) `DelIconFromTray; 1 v9 s5 g/ m9 S( N$ b, W" k! D. Y
end;
/ J! W8 w% ~! z5 ?/ f% }' `9 N
6 A4 d0 k% E7 {$ d) r- uprocedure TFrmMain.AddIconToTray;
% m! n: H( ~* E* ~2 G9 N5 cbegin - M' a1 P0 v8 ~- b8 G! e. b
ZeroMemory(@IconData, SizeOf(TNotifyIconData)); k \: `3 P: w$ `8 ]' E$ e" d
IconData.cbSize := SizeOf(TNotifyIconData);
9 i5 l2 e( E2 |IconData.Wnd := Handle; $ t8 `+ F; `5 t3 c. f) f' u
IconData.uID := 1; # q, T- X! N$ y
IconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
" z4 m* A: R$ k- j' ?2 L' `6 g3 n/ dIconData.uCallbackMessage := WM_TrayIcon;
. `! m! X. l" \, xIconData.hIcon := Application.Icon.Handle;
k1 |; g3 s K# u9 k$ E0 x4 mIconData.szTip := 'Delphi服务演示程序';
. v( t( T0 b5 Z/ t) Z4 X0 Z. UShell_NotifyIcon(NIM_ADD, @IconData); / Q7 R% u9 x v" e& {8 R
end; ( ^" G4 D7 k7 F/ E( h
* y1 B* S/ K, N" X: M1 |* tprocedure TFrmMain.DelIconFromTray; : l |& u& e; a, ^$ O
begin
4 i2 m, ?% f6 t3 ]# xShell_NotifyIcon(NIM_DELETE, @IconData);
- j7 Z6 x1 {0 m, A9 {/ G0 Jend; ; S+ T4 Q. h; t; b# f) g
( D! Q, F8 V3 Z5 {' s- pprocedure TFrmMain.SysButtonMsg(var Msg: TMessage);
+ j9 y- Z: A* ^5 ^2 m, f* A, Obegin
( h8 b* b& u; f: O% u mif (Msg.wParam = SC_CLOSE) or 2 M* n I% R! O; A( K
(Msg.wParam = SC_MINIMIZE) then Hide
( e% Z8 G/ w( N+ V3 gelse inherited; // 执行默认动作 ! V" k! \) X; V5 K
end;
" t5 K3 P/ V* s2 q- Z# H! G X# G' y* [+ l/ _% s+ f8 \- J! A
procedure TFrmMain.TrayIconMessage(var Msg: TMessage);
: ?+ T8 {+ K$ _2 ~) c; {3 lbegin
, t" s5 f7 @: n6 q! I6 Cif (Msg.LParam = WM_LBUTTONDBLCLK) then Show();
6 ~# ]( ]* I( @end; . Q: W+ s4 Q- H) D' |
0 b* w" k8 h# Z0 {& w$ d
procedure TFrmMain.Timer1Timer(Sender: TObject);
& d" I/ m u/ ibegin 9 p( P1 |( |9 j, X+ ]& q* Q
AddIconToTray;
5 `8 C. g- G1 |, fend;
) A' Z, G" s) }7 P; W( K, i2 a% u5 j. g% @& q0 `
procedure SendHokKey;stdcall;
, i5 m# N0 F C$ r; m/ kvar
! h( H* ?$ b+ A2 y |. G# LHDesk_WL: HDESK; ( G4 x( q: ^ e% A4 S. _1 r7 ?* o
begin $ |9 D" r1 v+ [( `- G* }2 V( u6 _
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK); . L0 l$ D3 } y3 R, k- o8 p
if (HDesk_WL <> 0) then 5 R# Q+ ^/ J2 L
if (SetThreadDesktop (HDesk_WL) = True) then $ H8 i7 g/ F- Y c A# {$ p, B
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE)); , L+ l' X) _% M) a5 ?) V
end; ' ]: q8 y; `* d$ k( g+ N: [. Z
$ E, _- Q! t/ Y& O2 Sprocedure TFrmMain.Button1Click(Sender: TObject); : I) S2 B7 t2 T7 \/ N- C4 s* @* O
var " @1 T3 @8 e) Q; {, n( h$ T1 o# }
dwThreadID : DWORD;
: d4 Q( ~& F' O4 g& H$ Ybegin 3 A3 a4 |) m: |, s6 u, H7 I
CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID);
1 n+ o6 c; E- z( yend;
6 C9 G; [. o/ w& S( a" r$ {- W3 q7 g. U
end.
0 _' C% Z( ]* c- I, A$ B
3 N* {9 F: o, k, s+ }" |) S! J* @) f5 F( |& R/ r$ A
补充: 0 L6 E4 `4 g \7 [% w4 B- Y1 P
(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. ' P, Q+ _# O; q6 g
8 B3 a8 W! b/ P4 k; e! j- 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.
/ a- z/ V4 j% v
, ~6 j [5 Z+ k- y(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:
' i8 f# U: X0 @1 Y2 h5 X* Ounit ServiceDesktop;
2 o( V8 s9 {5 k- o. \# S) F" r3 y' l
interface
) H# a& v7 H; ^
6 S0 j3 E: g/ \* h( ffunction InitServiceDesktop: boolean;
2 u$ ?9 S$ M# h" H! qprocedure DoneServiceDeskTop; X1 e ]% x1 i9 t- b9 [; C( f
; `! p: b9 l4 R. U; E" Q" T4 r- ?3 a
implementation 5 V) ?- w. d3 N7 n3 i. D1 f0 M% v
4 y- D( J) J! a( {, ~4 [* {
uses Windows, SysUtils; 0 s! L. k: q6 j! ]8 E; _/ n
9 X& w6 m7 ]$ ^" b& O8 G, T
const ; K5 K8 C+ A2 i! N
DefaultWindowStation = 'WinSta0';
W, G) F7 |; y* @( UDefaultDesktop = 'Default';
* a8 k. Y8 Y# y) m$ n; ovar
" [' z e/ S/ p% ohwinstaSave: HWINSTA;
# J# y2 b2 Y# d! V7 ohdeskSave: HDESK; # V, C# s( \1 v- d; f+ F/ n
hwinstaUser: HWINSTA;
( a$ f% J; J- P2 L( {9 X6 R( qhdeskUser: HDESK; % W' L5 V# u6 S9 Z
function InitServiceDesktop: boolean;
& q: i [9 }4 z- N& Kvar 6 G1 G5 o; n; f6 V# o0 i
dwThreadId: DWORD;
* L) E) S* ~7 l" y4 ^4 pbegin
R/ ?; ]' c6 x- u! `dwThreadId := GetCurrentThreadID;
8 z! g$ A* B3 s4 T+ G* |// Ensure connection to service window station and desktop, and
9 J- C+ {" x1 ?// save their handles.
3 G, }) u' e8 B- dhwinstaSave := GetProcessWindowStation; 0 Q- [* L4 g. d4 B) |
hdeskSave := GetThreadDesktop(dwThreadId); 8 M8 I8 K: j3 e# D; B9 y& \
3 h6 l" e9 V7 k% X1 T" M. i
! R; `& ?" y9 u' {hwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED);
% N. S+ }. l$ d. O( P0 }if hwinstaUser = 0 then ) | c( |+ z9 F, h) Q; c( ], i' E
begin 0 B& M* k! Z1 ^: r
OutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError))); 1 D" }, o/ m6 F
Result := false; : r- F4 y$ q5 K5 u$ R
exit;
- h! ~8 R; L7 r1 ^& C# T3 tend; : q# H& J' g. P* X$ [! O/ N" [4 W
: ] X: ^! [% |4 c" ] s8 \/ [0 Vif not SetProcessWindowStation(hwinstaUser) then
9 h& q/ S# q3 N, c8 O) lbegin
( U" ?2 } V; {. p& T* d- lOutputDebugString('SetProcessWindowStation failed'); - W6 `( n% @/ K! z8 v' ?- b
Result := false;
0 d l0 ?* o6 j/ \ w! Nexit; z- ]% F6 X ^0 e; G
end; ! ~7 I# X z/ F
$ a" Z5 h6 {5 uhdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED); # q- P' R3 p& f
if hdeskUser = 0 then
+ k9 n! \% S, \6 w T4 Z5 h7 x2 Mbegin
& {& S! z1 v; F- IOutputDebugString('OpenDesktop failed');
& `* P4 _5 |8 n6 w! l" E/ qSetProcessWindowStation(hwinstaSave); 4 t1 a& V6 ~# M$ g$ d
CloseWindowStation(hwinstaUser);
9 N, B) d n& J) O3 n. gResult := false;
# D! V5 h/ h7 R# ]! ~exit;
3 U u: L S/ N1 c+ [, q6 ~; k! E" @/ dend; / R: e2 e; r0 D1 Z
Result := SetThreadDesktop(hdeskUser);
, h$ F$ {! t1 xif not Result then 6 M/ x( f, y$ h! c. f
OutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError)));
( w/ T9 J* n7 q, Y' W7 [end;
9 Z! A! \. _% B; j1 t: A5 W3 C5 [7 ]0 k! K8 | N4 t
procedure DoneServiceDeskTop; ; c, _( ^9 d3 i0 A5 E
begin
5 e c: |# r1 y; E2 w9 h// Restore window station and desktop.
) h6 E* J5 W1 t! b% e8 @SetThreadDesktop(hdeskSave);
8 X K' m! p0 j4 L; R9 y6 qSetProcessWindowStation(hwinstaSave); $ w. L& Z! T6 W5 q7 I
if hwinstaUser <> 0 then
. j1 r8 K& O& [. X, wCloseWindowStation(hwinstaUser);
/ |( f3 {# y7 X- p7 D& ?: `if hdeskUser <> 0 then
- p" W6 {" O& |' o- g7 W& |- nCloseDesktop(hdeskUser); 1 x9 L' B: f& h
end;
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initialization
) i3 S, h9 F# t" ]InitServiceDesktop;
% K! O; E4 j# Q7 `finalization 9 V/ Q. t. S4 U; m
DoneServiceDesktop;
' ^ M- d1 ^1 \" Q! {% iend. 6 V6 c& z( R' u
更详细的演示代码请参看:http://www.torry.net/samples/samples/os/isarticle.zip 4 C7 I2 ?' a, D4 }2 E% B, z
4 V, z- U% h; ^' Y6 s
(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: 8 r/ R$ l1 n- U3 [4 w- D, G1 @
& a8 v$ `; @2 Hunit WinSvcEx;
% a d" S$ M$ k+ j0 E n8 T8 t% a% A# O9 E5 k' T
interface , F! B% @$ X+ j$ ?+ Q" O1 H
d' e' D" X$ r+ s5 R8 N1 i3 T; U
uses Windows, WinSvc; & Q1 [( q6 b+ I f/ w4 u8 q
( f# e, O4 A, }const . u" ^- ^0 }8 T1 l2 L8 a
//
! k) L0 D# n5 o7 i% V) t// Service config info levels
w% m# T4 c- q# x4 F$ x- Q// $ i& V+ y* {' M O& F3 E
SERVICE_CONFIG_DESCRIPTION = 1; ! Y' z! I" a$ ^3 M
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
zan
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