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(1)不用登陆进系统即可运行. - K/ ?. d0 b" Z, } Y; U
(2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的. 5 ?/ ^) i* G8 c6 n
+ m: _$ ?0 \5 a 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. 5 Z0 s# W; z- ~/ l. S( s# K$ o# z
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:
; P P$ q- G* B" H" B3 O3 e3 }" n
- b$ N/ O+ k& D1 h9 y: u' k5 _4 B% f1 d (1)DisplayName:服务的显示名称 % y" T# b! M2 w8 |: o; k
(2)Name:服务名称.
$ Q( Y9 r$ y: W" ~
; S& K4 s9 }* ?, 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. ! B7 }# L0 O- n1 J8 F/ l
- _5 j, s7 c" l$ i$ |$ O
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.
2 s8 `. I" u2 H; ?
+ L* e/ v7 f! R! J; { ~& t# { 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.
% v9 j# _4 f9 z( n+ I v( V
5 B2 o6 Q5 p; ~1 Y3 v8 @2 \ 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:
0 h- B& B. L( J+ Z1 Q7 r- L4 a4 ^* h/ |2 i9 f9 F W
' A0 I& K9 D- U9 r1 K. [( K8 e
unit Unit_Main; ; ?9 O/ E! s" w. Z; l
% V' \; K1 }1 p3 Winterface # \- [" u3 c1 \) Y: ]
% @; @9 U7 d5 d4 uuses
& d5 Q% r2 P1 u$ gWindows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain;
: K. S. K5 Z6 Z' ?& P9 P- T+ q
7 [5 E4 E0 r$ \* b4 C6 t. Btype
. N" t! J' u/ j) g( qTDelphiService = class(TService)
( G% s6 q. |) U( z6 R, ~' b9 |3 d4 zprocedure ServiceContinue(Sender: TService; var Continued: Boolean); & M' U$ S5 N* k) l" ]2 k
procedure ServiceExecute(Sender: TService); # i Q2 i8 T/ ~# t+ b1 c5 c7 P
procedure ServicePause(Sender: TService; var Paused: Boolean); 3 h. j/ J/ E4 O: A w# {/ Z' r5 E
procedure ServiceShutdown(Sender: TService); % d I; L- @, t* @+ G. B% u( b4 v8 g) |
procedure ServiceStart(Sender: TService; var Started: Boolean);
* V" y- k+ {7 E) y4 w3 Xprocedure ServiceStop(Sender: TService; var Stopped: Boolean); t o' N" [- v. @9 E
private
1 C- z& l: G# z- D{ Private declarations } 0 i5 e* v: T+ Y/ a+ u" I
public
$ n3 S8 }5 S: Ifunction GetServiceController: TServiceController; override; P% G! O0 D9 R I3 O
{ Public declarations }
, x/ n( i2 |# p$ G, f- X7 a- |end;
2 I( u S& h" h# B( S: t
( V4 x! a2 H0 Vvar
4 t$ m) N+ y# c# a( iDelphiService: TDelphiService; 6 Q# b/ F- e" } b( \
FrmMain: TFrmMain;
( T: j) \& m& y& W$ Yimplementation
& h% G$ E2 ? m" l. ^$ L
5 }8 e$ ?; d/ L& _6 \" e{$R *.DFM}
; Q r8 ~0 b3 d% L7 w& t/ j! I7 J: K; ^( s! @0 \( U# m4 F
procedure ServiceController(CtrlCode: DWord); stdcall; 2 I$ t. K9 u# T% p3 b
begin
2 w$ L* h/ w0 h2 z) n4 ]DelphiService.Controller(CtrlCode);
) U8 c3 i( A; Lend;
, U8 D) t1 i, E, |/ ~: A1 `# P6 S) c
function TDelphiService.GetServiceController: TServiceController; 3 `# D3 f* W; |, ^9 A- n0 p
begin
1 q0 i! v2 R7 t+ O* \8 m# r* W7 bResult := ServiceController;
# X0 L) ]4 D. M: Y0 aend;
: [' c2 x3 |& t
7 `( d6 {$ T+ c A% i0 pprocedure TDelphiService.ServiceContinue(Sender: TService; 8 v: Q7 r- N$ h# d
var Continued: Boolean); 2 {, s! m. d- n( i; X' I
begin
5 N" F: i' N4 \& ]" P. Twhile not Terminated do ' X! M/ H! Q; |! S5 ]
begin
. Y9 ~2 _5 c9 f1 F. I0 V/ m5 _Sleep(10);
# J( W. H; E: j' i0 d: NServiceThread.ProcessRequests(False);
& ~6 [3 f, T3 Iend; 8 ^. b. N; Y5 ~) |3 y
end; ( W' x* w9 N) ]# _, J% r" [' ~. U
8 N2 J, H6 o" \9 Q8 @! i3 _
procedure TDelphiService.ServiceExecute(Sender: TService);
" k1 K2 U+ l6 P& b$ q3 ybegin 2 \% s9 S5 I4 p' y9 R+ O8 L! `# B9 H( p
while not Terminated do
+ ]3 d, t( o8 ~! f$ v& E- ?. ~* Abegin 3 t: `. I' [/ B0 B2 u
Sleep(10);
; y& K# O8 f; E }. W" UServiceThread.ProcessRequests(False);
. M* o6 s- k7 L7 cend;
, ^! ~- }4 G' d* g9 l3 x, {end;
) S* q* w; Z$ f5 H2 V( D e1 _ e. w5 a7 _
procedure TDelphiService.ServicePause(Sender: TService;
I8 ]7 i F# S* f% a% M% f& Svar Paused: Boolean); - h* m; {% W' ^ h. [5 Q
begin
/ X1 \; ?6 S( gPaused := True;
6 I. x5 K' I, vend; ) ]! E) z2 X8 w J5 u3 c
& E/ l8 Y- g `, \0 \: F/ v9 z
procedure TDelphiService.ServiceShutdown(Sender: TService);
. i- Z# `6 @4 K6 D1 R% g% \! E2 Rbegin
6 b c; b7 d9 D: d5 L4 q5 Y, SgbCanClose := true; % C7 o$ A- _2 M" c. G
FrmMain.Free;
4 g: I, S4 u& ^4 BStatus := csStopped; 4 I% ~' S/ o* {3 R; g* U
ReportStatus();
+ U$ ~9 n) Q( s. `end; 0 [# C$ }; I7 y- E& t
9 U {: O6 t! x0 N) V5 E+ wprocedure TDelphiService.ServiceStart(Sender: TService;
% K. O9 L) b( d! n: tvar Started: Boolean); ! @$ I$ j, p) a8 D& A
begin ! ]2 t) y& O9 \$ Q8 h; f; k
Started := True; & j; H1 M& s7 w$ n/ H! z4 \
Svcmgr.Application.CreateForm(TFrmMain, FrmMain); & e/ }. N# n$ ]/ [+ I
gbCanClose := False; 0 o4 P# k9 ?9 p" \. [" v) n+ q
FrmMain.Hide; 2 ^8 B3 {" |: q, q( R& P8 C
end;
% w9 m: o% ?0 {1 z1 p
# ~/ P) f3 A6 n! [$ Aprocedure TDelphiService.ServiceStop(Sender: TService;
. Y( X" ]) _( p+ \: }+ [var Stopped: Boolean); 8 D: A' F8 N* x; J7 ^" R; o
begin $ V) K$ I! I6 r1 N# I3 ]
Stopped := True;
' E3 U% x& U1 ^5 p3 c: Z( e: o6 dgbCanClose := True; 7 a; T3 B, v/ d. w% i! S
FrmMain.Free; & B1 \2 I7 T( i4 r$ ` @
end;
: E3 p) d5 E5 _4 Q, f, h" m' E5 @ q
, o. e3 t: S6 n8 l" Nend.
" _; S' _# }( b h
9 x* w {( d1 X7 T! U* @( P) n
6 A6 G) Q$ m( i, p% A w主窗口单元如下: , C/ w! d. ^- W7 K' w2 H( ^, i
7 H# ^* T& ?. y5 \unit Unit_FrmMain; : @: U4 E/ A$ O
/ |3 \2 {; c* ?
interface - |. R( M8 i2 y9 r8 q0 p
+ L' [ i$ D4 ]' I
uses ; I8 M7 w# y, t4 r9 y3 k k1 J
Windows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, $ C5 Y4 p( z& }) J
Dialogs, ExtCtrls, StdCtrls; 3 l3 ?3 x+ C" s, [5 o! s0 _: w
$ u* G, z5 } z& L& e5 I8 v
const
/ K: W: R2 ?9 b) [. nWM_TrayIcon = WM_USER + 1234; 8 p# w- k: |& ?; I4 t+ h( N
type
0 Z3 ~) V" P$ g. G' ^5 G9 S6 i4 oTFrmMain = class(TForm)
% B8 ~. N5 s- r( ?* WTimer1: TTimer;
7 h5 T; f/ w' }' K6 y6 hButton1: TButton; * O- |' }" ]; P) N9 I
procedure FormCreate(Sender: TObject);
1 p, d4 q" Z$ w8 Kprocedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
% @5 O, ~4 ~8 H2 ]2 Nprocedure FormDestroy(Sender: TObject); ; _, w" I( ?! }8 Y
procedure Timer1Timer(Sender: TObject); 0 l) `, V( Z' O0 o, |0 i- J; u
procedure Button1Click(Sender: TObject); 4 j! b H6 u9 L# N, Y8 @ G% {
private
" d. }- p0 d; ~3 ?{ Private declarations }
9 W! V+ X3 j. y! t: xIconData: TNotifyIconData;
) U! g0 J3 @) ]2 t2 P2 c# x% Y% dprocedure AddIconToTray;
( \. b/ N6 ?& \ D" B( Aprocedure DelIconFromTray;
i* M+ h8 a' Sprocedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
8 r7 `) c% Y# @ ?4 u9 x- k) [! @procedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND;
. F/ A" n) K2 M% Z- A: fpublic * A/ m. `- {) e, G* V, @, |* n
{ Public declarations }
* W3 k) o( t4 E5 l4 [! d* O# lend;
0 @5 B" L; O" F- J
! M2 H( E6 e; ~2 O9 T8 N: W: Avar
7 y/ Q; q8 w8 i% G7 A% bFrmMain: TFrmMain; - m" Y3 E+ t2 l
gbCanClose: Boolean;
- w9 T$ t/ c! Z& w9 u5 {implementation " `2 y, F4 r% z
! `5 D" C& N: Q& l4 o3 [/ @{$R *.dfm} / K; e/ ~5 v Y" s* F- i
, |( {- U, d' [- S3 X
procedure TFrmMain.FormCreate(Sender: TObject); 7 q [4 a$ ]* V% s2 V6 B1 q( Z5 m
begin $ O% ?. l8 n/ I1 n# |
FormStyle := fsStayOnTop;
# f3 e' d- R/ I' g- ]SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); 3 x7 A7 h$ Q7 I. I; l
gbCanClose := False; ' d3 D0 d" u' `; v: M: v+ O7 G
Timer1.Interval := 1000; : B6 R6 @6 Z- K$ p3 Y
Timer1.Enabled := True;
9 e$ v- S& }2 ?: e& Z* @% q, tend; 9 r$ T( i: m i* Z0 Y- x
7 z6 j! v2 N; U# qprocedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
! y" w( I& L; S" g( \! f! Ibegin ) ]. {( q- K0 n/ B4 W
CanClose := gbCanClose; 1 U0 D+ `. P6 ]4 e6 E
if not CanClose then 5 H7 `/ K+ c# d& n* ^
begin 9 t' _5 f* ~7 r5 \# M0 {/ ]6 ~
Hide;
- a3 E ^" S m% Kend; + y* d# O. G6 B5 V. H
end;
' L7 _ S" q, K) `8 A8 z0 ~2 P. c# [. p- O5 P
procedure TFrmMain.FormDestroy(Sender: TObject);
6 e, r& L' t- l+ `; ]" T; t) Sbegin
/ x1 d! B3 F" y, i5 DTimer1.Enabled := False; ' L1 K! L: X' Q' h' }
DelIconFromTray;
( k' X" X6 A0 w$ x# M- Aend;
, o% o1 S- X9 g& x
) H( o! {0 I0 Uprocedure TFrmMain.AddIconToTray; - l3 |+ m7 k T6 s3 \2 P
begin
3 l$ M. H4 ^+ Q5 f( d9 d! }" gZeroMemory(@IconData, SizeOf(TNotifyIconData));
$ E# @$ G- A9 G" X% L2 F( D3 sIconData.cbSize := SizeOf(TNotifyIconData); ) ]3 L% I! X" h1 K2 I
IconData.Wnd := Handle;
- G- N% }# {& H' L+ _IconData.uID := 1;
+ W4 w4 S2 l8 |# {+ i- i" E7 QIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP; 3 Y5 {# f3 r3 s1 s' r
IconData.uCallbackMessage := WM_TrayIcon; 8 J3 C) N$ |+ f
IconData.hIcon := Application.Icon.Handle;
4 c5 }9 G; }/ q# y7 VIconData.szTip := 'Delphi服务演示程序';
4 q' I, ~4 x- [" V$ `5 Y! m& f- bShell_NotifyIcon(NIM_ADD, @IconData); 7 K. i s6 D0 D' I
end;
' ]! v! b. `# m4 D5 e+ Y( h
2 E; O0 {- c, A( n0 Vprocedure TFrmMain.DelIconFromTray; . G0 x. E7 Q3 W, X! x
begin
# i7 \+ B+ @& r2 l( ]- }( e$ W* @8 tShell_NotifyIcon(NIM_DELETE, @IconData); 0 P% @+ y; O; e5 D4 A/ W
end;
( `5 Y4 L7 R. Q x
. \+ o& g; I; ~: Pprocedure TFrmMain.SysButtonMsg(var Msg: TMessage);
I: S- j# ?) j# C( ]6 Q; obegin
+ B2 e& q9 j6 z/ e# D) `& o( d! C2 X! ~if (Msg.wParam = SC_CLOSE) or
v8 m+ }1 Z1 r. }! C(Msg.wParam = SC_MINIMIZE) then Hide 0 F. y, q3 [, u4 D$ ]
else inherited; // 执行默认动作
8 J) j- J4 z& h D( P& dend;
% x# G7 i3 y4 [+ F% d, I
- w1 q- ?' s: r) v8 `procedure TFrmMain.TrayIconMessage(var Msg: TMessage); 9 |3 c+ f8 l) T6 H2 B# s# V
begin
3 G( P+ }1 a* \3 @% L7 i! `) A. Jif (Msg.LParam = WM_LBUTTONDBLCLK) then Show(); 8 \, z; n1 n1 t: n! B
end; " W6 j0 d7 e: N
& Z7 m8 Y7 B! a& S5 eprocedure TFrmMain.Timer1Timer(Sender: TObject); * J4 z( `1 I( O( h5 F. ^; A
begin 8 y5 J4 c# `9 u
AddIconToTray;
, a+ e4 b1 N2 h4 Aend;
9 t3 ~" b: d% ?4 h7 H6 ~# t8 z( F1 C) L" J+ a- {, `
procedure SendHokKey;stdcall;
( y6 R3 ]4 r% _" ?0 kvar
f: |1 P4 g3 hHDesk_WL: HDESK;
" Q7 o1 p8 [% D+ j2 ?- Y# t" g- rbegin Z4 x0 e# Q: h. J3 ~5 F( k
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK);
/ Y9 F" J: c& ]+ w& Pif (HDesk_WL <> 0) then
- u/ e; ^4 v# h& c1 qif (SetThreadDesktop (HDesk_WL) = True) then
; N+ Q4 a( i& I1 tPostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE));
. W5 ^) `+ L! T& Q9 }$ d# {7 ?end;
" ?/ i4 {1 v% _! L h0 y, @
% I9 z" i- Q( G, S# J" V4 w* u. uprocedure TFrmMain.Button1Click(Sender: TObject); 5 s u. i F R4 A4 x" h; v
var 3 k8 b0 W% }7 a# E2 L( [9 ^& \
dwThreadID : DWORD; 2 q8 q$ D/ M0 I/ d0 A, l
begin
/ T# L# v: l& q! iCreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID); . F5 C5 X' m w6 [. _
end; 9 o8 ]( j: A- b4 C$ E, P" N2 p
& C- Q- S% B$ X
end. : O7 d( U! ?2 }, E8 F/ o. k
' U, `6 Q! j3 u: C5 h
5 L8 ?; z+ @6 ]0 w. F @补充: . a! ]( x; d0 ~) w$ b5 c
(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" m0 V+ H; }( \+ R3 b& F! U5 l- g4 ]* U( g' C+ U/ T3 K
(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.
+ ^- d+ ?2 o, e; K# K; V6 B$ S k8 P6 `6 ~9 f
(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:
+ M: H9 M, u* Q1 k9 p: \4 l: ?unit ServiceDesktop;
2 B8 h3 `; T7 b
7 p# f' c% M# N- b5 S8 c( Ainterface
+ y. \8 R6 q, [( @6 _( R* r& t j
function InitServiceDesktop: boolean; ) n( Y8 `9 ?3 p6 a8 Y( @3 U
procedure DoneServiceDeskTop; 2 [) q$ v7 y; T1 r( }# A+ h2 C
0 R8 ]% u2 D [- k- ?2 c
implementation 8 ]! N, |% x! i' |7 h" z
2 `; l6 V: y5 `2 ~uses Windows, SysUtils;
9 K* j/ _2 f6 ]% w, T
$ ~& F% V# @+ R5 r# F, rconst * O7 a$ B3 m% ^6 v; k- x) y; }, E
DefaultWindowStation = 'WinSta0';
1 N2 e/ P( H& v" m. c# J8 IDefaultDesktop = 'Default';
5 s! w) S1 A- Cvar . A& `* A0 _( F
hwinstaSave: HWINSTA; 2 e9 @6 T4 X9 P6 w
hdeskSave: HDESK; ( E) {5 Q; S( z. T3 ^+ N6 B
hwinstaUser: HWINSTA; ! v, I' L7 l6 I; d8 N3 f1 V
hdeskUser: HDESK;
- [8 h) {+ G6 v, y/ cfunction InitServiceDesktop: boolean;
- v/ E% B- O6 ]/ o/ Kvar ( w# Y' f4 {- `9 t2 @/ }
dwThreadId: DWORD; * n5 }( G$ m1 v# Y8 E
begin
' z/ F+ ~( }/ Z9 W7 LdwThreadId := GetCurrentThreadID;
+ s8 U) X6 _3 g/ x- L) ?, e// Ensure connection to service window station and desktop, and . P2 ~3 p+ j: h
// save their handles. + ?' {6 S3 d4 `7 Q& ]0 R4 r
hwinstaSave := GetProcessWindowStation; / R8 {) B9 p6 N. `* D, G: C
hdeskSave := GetThreadDesktop(dwThreadId);
* {" d" L1 }4 `$ z5 l6 B5 l
! a. E, E* i5 x: d0 [- A3 i0 G; r& Q5 a! T# ^2 P! W0 m+ p
hwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED);
& W U' w$ ?1 ^8 E5 q: lif hwinstaUser = 0 then
* w9 [. l8 s$ Q- w, W$ p Vbegin : a& d/ U( q& G: s
OutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError))); " c7 L# F& j. _" |5 ^
Result := false; 5 d. e f) U: h3 a$ Y: t+ _- Z
exit;
. k: P! P0 O2 w" K: l2 Q/ ?: k/ gend;
+ ^ p* X9 d* r6 G
5 ^2 c4 L0 u% C' p9 D/ M& Jif not SetProcessWindowStation(hwinstaUser) then - L" Q3 B& @; F+ y
begin + W$ I0 e0 V! r9 G1 ~0 p; k% }/ w' P
OutputDebugString('SetProcessWindowStation failed');
1 E6 W- R7 K/ `$ _! { L) mResult := false; 4 U! X, W7 H( y' V1 N. x
exit;
& I9 w# n, J- Tend;
9 h) U& r5 e, t& x, }' j9 X- [9 R( v f/ w2 v8 M
hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED); 3 r1 ~' t# I) j
if hdeskUser = 0 then 4 k$ A# g. m' [2 n
begin
% Z7 `, _3 S* }+ B3 q& Z5 LOutputDebugString('OpenDesktop failed');
$ H3 e8 x' z9 n. A' z# G7 gSetProcessWindowStation(hwinstaSave); 5 U1 k4 K0 P* H4 X4 {/ h
CloseWindowStation(hwinstaUser);
3 _ i9 m* Y D$ ?Result := false; - d0 l1 S; Q) j0 U2 Y) h: W
exit;
2 G' p' X% e' N% b0 Oend; 1 A5 U# p# Y# j4 }& `/ ^4 j% {( E% \
Result := SetThreadDesktop(hdeskUser);
7 C& [; h. W' n* c! {if not Result then % n( g+ Q2 e {& R7 |
OutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError))); % t! i# a; \7 M3 ~* O3 L
end; : Z' e! P/ f1 C+ n% _
& l5 f$ }! f) _7 ?
procedure DoneServiceDeskTop;
) B# q) o( j, ^8 a! @( @7 @begin ; ^6 U/ \, a1 G/ {3 @
// Restore window station and desktop. ) _0 A1 A6 C: c9 ^
SetThreadDesktop(hdeskSave);
/ d+ O: a3 Y" R3 ?5 xSetProcessWindowStation(hwinstaSave); 9 n$ b; W: }7 r; Q$ q4 Q
if hwinstaUser <> 0 then & l7 A' f1 [) i6 x: |/ i- V- s
CloseWindowStation(hwinstaUser); # O1 Y, L. L6 ?1 c4 U" g3 {
if hdeskUser <> 0 then ) Z/ x7 j- {/ Q7 j1 Y2 o
CloseDesktop(hdeskUser); 1 w$ _5 a- x2 Z2 \
end; - F: [0 M; m) ?1 s4 S: v& O& F+ ?% u
) ~2 _' M- L9 ^
initialization 8 Z! x& n' L* N5 W% I7 g
InitServiceDesktop;
6 K9 H0 H# {* n) pfinalization
; g5 X% a6 v! @2 S6 G ~DoneServiceDesktop;
; T# K+ @ e7 aend.
- h3 P5 D/ r6 S$ d" G! L$ v# k: b更详细的演示代码请参看:http://www.torry.net/samples/samples/os/isarticle.zip 6 O! d; x/ U5 j q+ h/ `- d: ?/ [9 Z
' N0 C: n( h5 }2 k# S$ E( x(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:
. v& H* G9 v7 ~6 b8 L; H6 d
7 P1 ]. n% m+ W. U, b3 Vunit WinSvcEx;
0 Y; i1 l5 N$ b1 o8 L; O, P
3 ]( q6 v/ x1 d8 ^4 Einterface
- ^; O: m+ R0 A, ^
[! [3 x5 P- ^uses Windows, WinSvc;
3 _. y: V( a2 t, C& t. x: [
1 J4 h: x6 q+ h5 pconst ( p) \" G. J7 A
//
, F" y1 O6 g5 N' [0 x9 E// Service config info levels
. \- Q. ^0 k6 Q# c! W0 y+ T' Z//
' D {' N* }; O9 h _SERVICE_CONFIG_DESCRIPTION = 1; " Z6 v" |& C/ m8 n& _) ]
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
zan
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