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我的地盘我做主
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(1)不用登陆进系统即可运行. ( X9 R3 J7 B, h2 O+ j% z
(2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的.
. c0 z2 H; a3 `# v. W
7 W$ o. Z! d4 I1 o/ S 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.
& d) z+ {! X: q7 Y/ j 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: 4 g' l( ^, I! a% f: |8 a
6 Z; S; g2 D o) j6 o
(1)DisplayName:服务的显示名称 2 C' i' x3 f9 ]$ h" X, e2 x
(2)Name:服务名称. ; [2 Z& G) g3 i& l2 j
8 t! J1 y& K- r5 w9 I% G 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. & r$ q5 P: |0 o3 `. l! P
, m+ W2 s9 L& k( [: {- V5 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. 8 \9 H9 q5 V9 w @1 I4 f' O# a
: `/ C0 b4 S I+ ]
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& i' A2 `- q/ `# x% q! Y& @2 t6 X3 Q& I' @0 ~
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: & G. ^' M$ v, V6 @& }" ?
+ M/ g; v2 R) k6 ^
) O, c3 I! t D; Funit Unit_Main; # n8 G1 W8 V' v7 T6 O# D, m
- c* H. V1 N; o1 [interface
& u4 n/ E2 D& e- U9 w! Y+ S8 f
uses ( p$ b% t" l& D2 E& I
Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; 7 b n2 |' K0 }3 i
/ |7 ]' v; \1 V) A- ?type
U" X2 w5 s& C. O( ATDelphiService = class(TService)
% e* m; m9 E2 Y3 l9 G% J) S wprocedure ServiceContinue(Sender: TService; var Continued: Boolean);
9 T. X0 M/ [+ G; z6 Lprocedure ServiceExecute(Sender: TService);
5 n- R8 e, V5 j4 Z& Qprocedure ServicePause(Sender: TService; var Paused: Boolean);
7 \* q9 y" t2 R x$ Sprocedure ServiceShutdown(Sender: TService);
6 J( Z* l/ h; F0 qprocedure ServiceStart(Sender: TService; var Started: Boolean);
/ ~, W6 j, s8 [9 @1 I' nprocedure ServiceStop(Sender: TService; var Stopped: Boolean);
& f! ~2 ~9 K; @' Bprivate 3 q9 j1 v1 x) ]1 C2 B0 B
{ Private declarations } 5 q- j6 o9 U8 u5 Q5 h3 k
public & d( @( K( `# z" y9 I- K$ g" A
function GetServiceController: TServiceController; override; ) o5 W* e+ y; i+ ]+ ]1 ^: C
{ Public declarations } 8 G7 b5 c( [; V
end; 1 f9 K3 M* ]0 ~6 ]5 Z! x, o
3 X" P& k$ h" P1 U M! Yvar
0 C% _/ M: Y; L' M) z+ j' S5 ~+ ADelphiService: TDelphiService;
; R% Y$ C( l+ V# {0 u5 C! l& |4 NFrmMain: TFrmMain; 0 B9 h# k- ]! H# p! }. ~* T
implementation
|$ F1 x2 ?( X1 I' z. D' v8 a6 r3 u5 o5 \4 x
{$R *.DFM} - S1 w2 c& U5 I" ^
, v0 b. n+ F* O, o# \& oprocedure ServiceController(CtrlCode: DWord); stdcall;
2 l/ n O9 p- D. R9 w0 f, |% Lbegin
8 ^ ?$ P. Z: VDelphiService.Controller(CtrlCode);
m# O$ V8 C# t7 _- d+ send; , f- `- `4 _% `' |+ K" K8 e
0 F, K% U% \$ v% `( T+ q$ y# B
function TDelphiService.GetServiceController: TServiceController; * c; d& a. A+ n* z, J
begin / v/ b4 Z" q+ b+ ?6 g D1 M
Result := ServiceController; E) X3 d4 O1 k/ i2 b
end;
! e, b8 C/ m/ a% E* i7 `1 {) Z, G' t! L% ~1 L2 v
procedure TDelphiService.ServiceContinue(Sender: TService;
6 P5 M# V3 x1 M' c6 Hvar Continued: Boolean); & o$ a5 ` }3 A/ s v
begin , X" i3 o; K+ T4 `# o# d' H5 f
while not Terminated do - n: B( M( K$ I0 R2 H: C$ U9 {2 B
begin
& `$ d7 B; x' l( }1 I' n, Y& D" c5 _Sleep(10); 1 Y" y( e% E' A- E& L: _( c4 g, ]' U
ServiceThread.ProcessRequests(False);
/ u- E& j6 |) @- {end;
) G5 M0 Z. _2 C+ w1 x7 |6 |end; 4 p) j4 R* E. b. Z
8 b! {; a+ S5 G1 k1 mprocedure TDelphiService.ServiceExecute(Sender: TService); $ ]' W6 {3 \8 I8 y5 [
begin . Q+ g( `4 O/ {0 ]! k
while not Terminated do - W% T/ R" G" i& _/ w/ ~0 g8 e
begin 2 d. v0 Q4 X) ]1 F: W; R4 Z+ O
Sleep(10);
: [4 [# Q7 F8 W: R0 o9 IServiceThread.ProcessRequests(False);
( Z- x- @0 e! q* d3 hend;
- A6 u. R6 x/ S1 I) `end; : m1 v, ?& |4 l$ J: v
3 Y/ k4 J6 d( l( q$ I/ J0 K# Aprocedure TDelphiService.ServicePause(Sender: TService;
2 t1 S) j3 C; A. |7 L, Evar Paused: Boolean); 1 p9 t; M3 H# x5 t' C
begin
, t' C# W" }( e g& z7 K8 K& hPaused := True;
8 w- s/ W) k% ~* W6 K9 ?4 Send;
% L; `+ b/ E# u5 ?8 i4 g4 I% g: L+ N1 Q( V
procedure TDelphiService.ServiceShutdown(Sender: TService);
4 M4 l! _; A" }7 `begin 7 e* g$ g R; G3 r( P) i" K
gbCanClose := true; 0 F: q$ U+ ^7 C, J% f9 w
FrmMain.Free; - ~2 q ? P9 m4 w9 c8 R* g$ S4 ~
Status := csStopped; ) z' p% S3 \. Q; M% |% J
ReportStatus();
: U3 V$ M' n8 T% fend;
5 A- I" [. c) G" D& Q# Z
- ]) v- Z* c+ sprocedure TDelphiService.ServiceStart(Sender: TService; $ C: F1 H6 ]1 G |' O% x
var Started: Boolean); ; r' Y' x2 j' z1 `
begin 2 I6 F/ r, Z# R \- s6 R5 ]% Z
Started := True; 1 z) b1 q: L q* q4 M* O) `. h( N
Svcmgr.Application.CreateForm(TFrmMain, FrmMain);
% |: {5 D4 x/ `) E$ g1 c2 A- bgbCanClose := False;
7 k# M# b Q- mFrmMain.Hide; 7 o5 q8 Q9 B5 R5 N7 U
end; $ U* p; i5 b0 E( m- J! l
7 p" i. T6 m/ t' |6 d, @! iprocedure TDelphiService.ServiceStop(Sender: TService;
z6 O8 h( b" |* Uvar Stopped: Boolean);
" b8 V& J/ S9 P0 xbegin ( Q: k0 |3 h# w Q1 _! ^
Stopped := True; 4 v$ P( y' }* V- a9 P; g5 u
gbCanClose := True;
/ L& _, {7 ?0 h2 WFrmMain.Free;
- a( C o, ~" l6 v3 Z, ^# T2 Gend; . ~. ^2 T& \# b
0 ]) X1 \, T$ l9 l: J, Q4 Gend. r, j' W9 E8 B6 X5 ~% g7 ?
- T2 D7 n2 t" ~" F4 i6 B' W$ R& Q4 O) j0 X0 \
主窗口单元如下:
" u( d9 _2 J' u c' |5 S- `
1 F# j2 g# S" Vunit Unit_FrmMain;
6 H# G2 g# u7 M) e. J2 }/ O! a4 w4 o/ d" }- {- ^
interface / o4 O1 Y6 t$ [, }' k) W0 m. m
: z9 y# |7 U- V) p; ^
uses
9 i+ `( a( A3 X# z% @( N- YWindows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms,
! N! ]# p9 E2 A: s- xDialogs, ExtCtrls, StdCtrls;
% I; ?6 J! W9 f$ `) H. l4 d8 O" y( O( x
const
8 Y3 f/ q1 w, v0 \WM_TrayIcon = WM_USER + 1234; # R' E( O. T* `* B8 t
type - Q1 z2 X2 r4 B! [& t! F+ n* v8 \
TFrmMain = class(TForm)
7 `" b+ A& G$ h: JTimer1: TTimer;
7 l' J9 U2 t& B F9 d! A2 ]Button1: TButton;
4 N0 s9 Z; u& ^' z4 xprocedure FormCreate(Sender: TObject); 4 b# T3 i. W* V' } h( v
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
& Y5 _6 m8 Z- w hprocedure FormDestroy(Sender: TObject); ; ~! Y+ D) j% v# r' m
procedure Timer1Timer(Sender: TObject); / ^1 x- |8 n) Y2 Q
procedure Button1Click(Sender: TObject);
- Q: `! }$ W, J- g6 m- Fprivate
7 D3 o( S5 k: M. ^- Y4 V{ Private declarations } 4 V) x) o% y) W8 s9 |
IconData: TNotifyIconData;
6 ^. q/ t. O1 O$ K+ j* f; p. Tprocedure AddIconToTray;
: r# l% a) b# V, O8 D8 Aprocedure DelIconFromTray; 3 C$ A4 }. Q8 P$ A
procedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
7 A G" V! q5 I+ P8 U$ e; _' ?% Qprocedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND;
8 R& ?. k( j5 opublic
1 Q1 C9 P4 Z* N$ S. b. d. E, n* u5 O{ Public declarations }
9 n" k* D( p7 |& I) g; M* Nend; / d: O/ P2 D: A/ W2 o
4 A# j# [, J1 b/ Uvar
& p) g0 m& ]- X+ x# Q& cFrmMain: TFrmMain; ' v# |0 C" `' o" J
gbCanClose: Boolean; 4 E, e3 s( {- p% R
implementation 7 f9 ^! B- x0 s9 `: g# c. P6 g
6 Z' q. s0 ]/ V5 `0 V0 q% B
{$R *.dfm}
6 a% \) S' y" ]' M$ m
* b" |3 x. O- f- P* M* s; n2 Mprocedure TFrmMain.FormCreate(Sender: TObject);
e. ~1 r6 p3 ?; C, [begin
2 p. q0 d8 F6 B# dFormStyle := fsStayOnTop;
8 L9 |; {2 ]2 [0 i7 j. C+ pSetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); ' P( \ Y$ f& C" ^! [
gbCanClose := False; 3 L; O2 T# M5 ]# O3 c7 n1 o5 H
Timer1.Interval := 1000; * @: j7 y* F$ y" n; A/ \/ Y8 i& _
Timer1.Enabled := True; / R l$ d6 O! G0 z$ s$ P }
end;
2 o5 t7 X! ^" p7 A+ B
& w m$ }! v: ]: D: v* | Fprocedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean); % O9 m1 m# Z$ A
begin # ^( _7 P* C5 k0 Y5 _& K
CanClose := gbCanClose; 3 w3 }: o' D8 z6 m- S
if not CanClose then # ] m+ s; q* L7 E4 t
begin / ]3 m. m' O E: \' d$ t
Hide; $ O- c% H4 G+ L3 ~1 \
end; 1 x8 L6 n6 t! f+ f3 S
end;
% t$ N( V2 W, D
1 q. ]9 u4 t f K e: `8 Dprocedure TFrmMain.FormDestroy(Sender: TObject); w" k9 a4 b+ ^( G' P7 _
begin
! ?) p* H) t3 Q! [Timer1.Enabled := False; ' r& Y v0 ~: G; p& [
DelIconFromTray; - H! a6 b6 t( J; R# U4 i$ e, g# Z
end;
d6 \; O* _' n- s+ a6 J4 P( i3 c1 {" e7 y" K
procedure TFrmMain.AddIconToTray;
# J3 t" f$ c2 jbegin
, d$ ^+ A }& h: r. PZeroMemory(@IconData, SizeOf(TNotifyIconData)); , q1 q3 K- f' E5 T- ]7 J. G: j5 z' N1 J
IconData.cbSize := SizeOf(TNotifyIconData); $ D7 P1 A' T* m$ ~
IconData.Wnd := Handle; 4 H9 a6 S4 d6 m9 _4 M- O2 I/ \
IconData.uID := 1;
& Y7 d& u, j! C T( S( tIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
: ?3 ], v( j7 ?1 \* R5 HIconData.uCallbackMessage := WM_TrayIcon; 8 e, Q7 F/ k$ _5 n. W) \* d
IconData.hIcon := Application.Icon.Handle; 7 C* f2 k4 |& [: G ?0 n2 C
IconData.szTip := 'Delphi服务演示程序';
( g$ H# M/ z# [, x$ V/ b( ^' TShell_NotifyIcon(NIM_ADD, @IconData); ' T/ G2 E" ^, L% M$ N- T% q: y
end;
. R% d3 |& G* U' G5 P- D9 n" I$ p0 C1 }2 l% e! g
procedure TFrmMain.DelIconFromTray; 8 b+ ~/ m5 D8 V, g8 z
begin
5 \, u/ W0 f: l9 K5 q# b3 A- g6 oShell_NotifyIcon(NIM_DELETE, @IconData); 6 n3 G# T6 j, g6 B" M$ b7 F
end;
' A$ }3 n2 t6 N \' C( G; d" T
procedure TFrmMain.SysButtonMsg(var Msg: TMessage); & @# y# u6 ~( @8 w, d$ I
begin
9 g, P6 W! h" G4 W5 xif (Msg.wParam = SC_CLOSE) or
7 K3 [3 u: ^# W7 w$ i(Msg.wParam = SC_MINIMIZE) then Hide
, B: e) m% j4 x0 _+ h" nelse inherited; // 执行默认动作
) \# E1 A& h& W4 K# qend; - B9 F- B* h" M9 [
) B. H; D2 L* P) P9 N& L( C& Y0 `3 ^procedure TFrmMain.TrayIconMessage(var Msg: TMessage); # N, T5 l# ^' [+ L; W! m% |
begin & b" h3 Y' U6 S9 [% m" e8 `0 o
if (Msg.LParam = WM_LBUTTONDBLCLK) then Show(); ' S" S5 n8 Y4 G7 f
end;
/ ?% e7 E3 D" ^+ C2 z1 [- A3 J! ?% a7 f
procedure TFrmMain.Timer1Timer(Sender: TObject); ; `: j s$ U% ^: j7 U8 Q
begin
5 Q* A& r9 r. F' ]& `9 @4 U$ `AddIconToTray;
( X& E; R) M* a9 ~; O' s) s4 Bend; - S) j. M+ y( Z9 I
9 @! m, i; g) o1 M. jprocedure SendHokKey;stdcall;
' e# M3 r9 I$ P% r( c0 Tvar & j" K! ~. j- y8 _8 B1 L0 U
HDesk_WL: HDESK; ' W7 k: q" A* G: w, m' W# ?# x2 @
begin ! w4 ?! [( c! b4 ]
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK);
. r3 S2 R6 M5 O0 I9 x xif (HDesk_WL <> 0) then
6 R" W6 g4 m6 z* {0 Z6 b- oif (SetThreadDesktop (HDesk_WL) = True) then O X3 u: l# T
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE));
) Z( s8 m* b* N0 O/ bend; 1 [- f/ g* R. ~6 T5 g8 S1 k8 O
9 j% x ?8 m, ?* c& C6 S. sprocedure TFrmMain.Button1Click(Sender: TObject); # |5 h+ v* ^ r1 `
var 6 x) ^- V& q. {$ o7 v
dwThreadID : DWORD; 8 _6 l$ p& y+ u: z, g& H# L
begin : t! i8 b' I& m" M3 H8 b" \; O' {
CreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID);
/ V& l# B. K/ {9 X! G! aend; 0 m6 F2 J3 e; g# N4 W
" g- k0 H7 |4 Tend. ! i# a. m' A+ E( M7 ^ l' L: `6 R
* T- D. `( m! \" N
9 o; u0 G9 c9 z( C8 `% W9 k) C补充: 6 _7 W3 k) D3 j& |1 @
(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.
, ?" ~$ j; @. I8 l2 a0 D) r! A. n6 G! k6 ^
(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. 3 S6 o, t% `0 i9 j k% N1 J2 ]1 C: {
8 Q h" y" y/ z# H5 ]- @; U2 f7 `
(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: % c% `6 _5 ^2 s8 }
unit ServiceDesktop; * M# q/ p+ o& M9 \+ F- f3 Y4 F# |
- O, R; @, M" @% Z/ E
interface
0 Y3 w( l, x; K! l6 h. ^& y/ M, |
- C" Y& T- p$ M' t7 {function InitServiceDesktop: boolean; 3 [" T) V# ^" H' G" s- m
procedure DoneServiceDeskTop;
3 E. }. m, o. O* E9 A, y- r1 `7 U% |: I% k* p7 I
implementation + \% ]2 z/ u9 T, {
S- V. g8 Q& K# d
uses Windows, SysUtils;
' b$ R1 m. M3 h( p. q p: B* c: o& Z% K. N4 v2 {
const . h/ _2 M2 ?+ L- x
DefaultWindowStation = 'WinSta0'; " k8 N1 P% ]: F
DefaultDesktop = 'Default';
' m ?/ f2 _% f# B& b$ e6 _var
- M' k3 J9 M) _4 z1 ]hwinstaSave: HWINSTA; ) t0 q5 {* D. s) O6 y. H
hdeskSave: HDESK; " P; M Y% _- N% U8 r& m7 r% m2 I
hwinstaUser: HWINSTA; 5 u8 H2 B7 {0 v8 p) J9 b
hdeskUser: HDESK;
# T, i& r( N ^% J) \% w7 ~2 N1 j# Pfunction InitServiceDesktop: boolean;
) f+ f: y7 y$ [7 v$ l1 Svar
7 _) `. ?/ E; P+ h& ydwThreadId: DWORD;
" o! c7 W4 ?6 H, F& J8 tbegin
5 @. G# [5 f6 N8 W, o$ AdwThreadId := GetCurrentThreadID;
% {/ b- h" K" }7 z/ X1 U// Ensure connection to service window station and desktop, and
5 e" _ S- B% L: q( |$ [4 N// save their handles.
3 B2 E, r& a, s' W: y3 f: ChwinstaSave := GetProcessWindowStation; $ M0 b2 \* X X- T1 B
hdeskSave := GetThreadDesktop(dwThreadId); 4 i7 o9 o4 a" |0 W
9 C$ {0 ^7 D8 [
4 O3 M Y! u8 {1 X/ QhwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED);
% q. ^9 W) n/ `" D; fif hwinstaUser = 0 then
5 @3 t; ?+ A, d, z8 m6 Pbegin 2 H5 b( h. L! ~3 j+ m) @" V' Y
OutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError)));
1 _5 t, q7 \6 S6 x1 dResult := false; 3 c& \" T$ j- H2 `% h0 T$ d
exit; 5 g& u9 I8 y; }" g
end; * {( f5 P; A- i4 z2 C
( ~+ J5 a3 P/ ?1 `! j3 E
if not SetProcessWindowStation(hwinstaUser) then
7 v* k! a/ Z6 v' x# P) `begin
. K1 H j, M5 v" x% yOutputDebugString('SetProcessWindowStation failed');
0 g7 P$ T% \* n% b5 A4 wResult := false; ; O& h F% `$ N- q5 R# J" V
exit;
6 `0 ^8 p* F* Qend;
6 Y5 s, E+ Z# Y2 [" L2 Y# Y3 N' v$ F5 u! Z
hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED);
* O2 M- A( h- J+ Kif hdeskUser = 0 then * B4 V9 b. V' Z$ e1 t% r: Q3 p
begin
- w, I H6 H/ l4 a! jOutputDebugString('OpenDesktop failed'); 6 d# r7 m: G; ]( N2 {* D
SetProcessWindowStation(hwinstaSave); ! A. ?8 J' Z# w M! O B" l
CloseWindowStation(hwinstaUser); 3 d4 @5 q+ y. U( p4 E) l0 A# H
Result := false; ' w; d4 q0 K: _ N8 X6 P
exit; ( k5 S" C8 m/ }" [% H( B
end;
0 ~% r/ }, D! I" ?/ aResult := SetThreadDesktop(hdeskUser); ' e0 e5 L6 p7 F6 x+ e
if not Result then
( Y( C& j& }5 i5 QOutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError)));
: W+ B' ~! X+ |: W5 X) R3 C4 Nend; , l- n6 n" E; E9 z O( w
. j( d. Z/ e; q- @( h+ K/ j5 H
procedure DoneServiceDeskTop;
$ v$ Y8 I9 n+ \) O, n( Cbegin ( Q( J/ L, e" k5 c8 J/ h
// Restore window station and desktop. 2 D0 ~% U* p. h! E! I4 e
SetThreadDesktop(hdeskSave); ! s+ u# W* y a" I
SetProcessWindowStation(hwinstaSave);
# i6 ^" R0 E3 v' a( ~8 S3 [5 Gif hwinstaUser <> 0 then
9 S! T8 z7 y5 ~4 s2 }CloseWindowStation(hwinstaUser); # u, h7 q6 R; t o3 H
if hdeskUser <> 0 then
+ ^* H$ q$ O) ACloseDesktop(hdeskUser); : S8 u% U) ^2 C8 c& O4 S6 ^# o
end; , R; F3 `, g, ]0 v
5 W y2 |& ~7 P. k/ cinitialization
1 c+ F& r7 a# v) E3 IInitServiceDesktop;
# S( P+ @+ i+ Q1 @: b. ?finalization
) S/ [" d5 }6 y2 KDoneServiceDesktop; , i3 O9 g. }1 C0 s) Z
end. o+ U7 M7 c& {9 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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# |8 w/ N# N2 y% O(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: 5 B) u, }: v* I1 A
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unit WinSvcEx;
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interface ( I; ~8 Z: D8 O( I$ V+ z$ [
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uses Windows, WinSvc; $ ~% ?( w! X8 L& s }1 {7 \3 @
9 M% k6 W# L' v4 y7 U+ Z' iconst
$ I5 F* l' }# r+ `5 c//
! x$ P7 i& g/ ^" X' N, Z0 y: ~// Service config info levels ( k% s& m% S- y5 D/ F/ Z
//
7 h6 {: ^0 I5 `0 B% ~/ }7 {8 J, ^SERVICE_CONFIG_DESCRIPTION = 1; 5 L) X8 H* x* }: J! N
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
zan
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