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(1)不用登陆进系统即可运行.
! i; K# m6 l! x: t. ` (2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的. 4 V* C F. L# T5 [
: s) L4 x6 q9 i D8 G
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. 1 d/ ^# c* s5 f2 m5 t- W/ [
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:
, t4 m6 ]0 }* h
+ b9 v6 n$ O: Z4 j (1)DisplayName:服务的显示名称 : |- w& w7 U3 m2 s a# m# O8 ^
(2)Name:服务名称.
5 [$ ~3 X0 z3 ?( j' y9 m% `" ^8 f+ L; { {
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.
* ? n( C j, D0 O1 S% w* I- w# n3 f, C) R* z( 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. " w; L6 t y4 W- I; ?2 c
( i+ ~* v8 _4 }: f
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.
$ z8 e( p% y: G
% b4 Q+ F3 g# N: B- n7 ^ 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:
( s# n7 C& B% a2 z1 E3 W* k) g2 S1 r9 b3 G( b& b7 f
- S. E" }. ^/ R! U
unit Unit_Main;
3 X6 t" m" _) }+ p# @; y9 Y r8 }2 u$ J, T+ q( p
interface # B4 }* c `" c
7 o# z) p7 K- g0 c# e" ] K
uses
( V" Z. T' X; h! g+ _6 kWindows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; # e* ?" A: }% f2 Q3 q' h& G
4 q: t! Y) Z6 M6 F# Y" I3 o V* H' \type 9 g% I4 h6 s# G" W
TDelphiService = class(TService) + K& O2 V# Z/ w" \( u, E
procedure ServiceContinue(Sender: TService; var Continued: Boolean);
8 |! b" N0 U5 m# e* z8 ^procedure ServiceExecute(Sender: TService); ; `, K* j( N1 S( }% b: j3 b; U+ V- y/ E
procedure ServicePause(Sender: TService; var Paused: Boolean);
# D+ M2 K3 y" t% G5 lprocedure ServiceShutdown(Sender: TService);
0 \% d4 p# u5 s0 L! \1 D& a9 @procedure ServiceStart(Sender: TService; var Started: Boolean); # e* K6 r( d; P1 y: t
procedure ServiceStop(Sender: TService; var Stopped: Boolean); 1 s8 y# d2 w5 R4 R- T# P- j
private
( Q% _8 v1 h, b; W1 p' U{ Private declarations }
0 _. ~# Z0 v, i3 \4 p, Vpublic - k& L# i1 I! ]( e+ ^+ G) y( U
function GetServiceController: TServiceController; override; ) X1 }9 x+ I/ [ S+ }
{ Public declarations } 4 `. N- R& L" w. j+ K/ \8 K
end;
3 M/ c* w) ] ~5 J8 g+ S) ~+ L& X
2 l" B5 K7 d% x5 J; Jvar
' k( N' T+ {# ^, U4 NDelphiService: TDelphiService; ; d# N* x1 N- B E3 ^/ O5 N3 s
FrmMain: TFrmMain; 9 N4 K) r; |4 J! d7 M9 U, i( t
implementation & R) O/ s& v" F' S0 H8 o- n& L! ]
* p% G: D( U' F! P+ M) c
{$R *.DFM} 5 G1 ]5 q+ i8 ~8 @
0 S# Y$ L2 Z$ c ~' [. o
procedure ServiceController(CtrlCode: DWord); stdcall;
6 s1 C) w- T0 U/ |+ jbegin
$ s+ P0 h1 c0 t5 Z' u& m+ nDelphiService.Controller(CtrlCode);
* n' |0 c! a, c0 ^end;
7 L# R; @. ?2 h/ Q* v% U m# K; ?
- F3 P! }) d! a( ^: sfunction TDelphiService.GetServiceController: TServiceController;
* N8 B; u7 d. H$ lbegin : V+ E n0 b" F6 f; U
Result := ServiceController; 1 ~) a; K9 t. y$ G- w9 Y2 v
end;
* @, _# A% T- G. P
6 ^ ]+ G, v9 l7 Z% Y8 X; D2 o) k) mprocedure TDelphiService.ServiceContinue(Sender: TService;
: P- i7 g: \+ W& y4 v6 jvar Continued: Boolean);
y( q% n! b* dbegin
7 k& B7 u% F9 y: `* F6 E7 w$ Z7 qwhile not Terminated do
, @6 O5 l8 t6 r8 F p" H* ]4 Ibegin
: y5 f4 [% n1 \Sleep(10);
0 C2 W [% h8 T1 O$ C1 h- D* |ServiceThread.ProcessRequests(False);
8 y/ \& F7 X! w( k" U9 Z( ~8 aend;
6 U/ R4 Q3 O2 v% c- h7 {/ H8 bend; . t4 X: Y9 r9 @. N, c
* V0 Z: V* p1 Q" G) B @& q7 cprocedure TDelphiService.ServiceExecute(Sender: TService);
7 Y2 T& d/ S P) jbegin / I& B$ S+ O) ^# H
while not Terminated do - p' {1 @# f6 J- ~ E& q) [
begin
+ U$ \8 O7 U4 ?0 T0 BSleep(10); 5 G4 \ }: p6 B2 B/ E% }' @* k, {; e
ServiceThread.ProcessRequests(False);
; J" L! h& _1 A/ Q8 Q* send; / F5 D) `: M# i- ]- U, t+ x
end;
6 }: Q! ]% P' W" O5 n1 K/ D- B3 `
8 g: ?% {& A2 ]) t- l( \ ~( @2 _procedure TDelphiService.ServicePause(Sender: TService; 9 J# Z* U' ~: w! Q3 Q# F
var Paused: Boolean); $ h$ }9 f) k& r# _
begin
2 |. R+ l; [( e2 G0 n4 w' PPaused := True;
# O* Z( z" y6 y% H9 a; \0 [1 c8 ~end; T) T# Y1 o0 m0 T, u# ?1 _; Q
9 }1 A* ~3 @) k+ O9 B8 S5 j$ | bprocedure TDelphiService.ServiceShutdown(Sender: TService); $ f* {7 `8 T7 N( ^: W* Z# n
begin , k- B4 V7 x; k0 a# H g' L/ t
gbCanClose := true; " m' ~. e+ z& P2 F4 L& `
FrmMain.Free; / h( w5 m$ y4 _3 z7 Y
Status := csStopped;
' F! u7 G1 }" ~ReportStatus();
& P5 [& l! `: t9 l( T( o/ T& U) Mend; 1 |! h8 \" W' ^+ _/ T: Y0 k
% N4 N% N" |2 B8 g, v# E$ `procedure TDelphiService.ServiceStart(Sender: TService;
! K4 p2 S* f1 g% h* V4 J% wvar Started: Boolean);
9 Z C7 Z3 R$ H8 r! tbegin
; }& j: R% E3 k4 NStarted := True;
* M9 n" V+ g) Z, n$ G% \+ ESvcmgr.Application.CreateForm(TFrmMain, FrmMain);
- Z* w2 X! G7 v2 k9 RgbCanClose := False;
/ O/ \- Z' L1 l3 R4 BFrmMain.Hide;
% k6 h: H% r. Tend;
; s( A3 {- w Y" K$ m
% L' y3 @$ Y7 G: Cprocedure TDelphiService.ServiceStop(Sender: TService;
, D2 K7 }. L4 @3 H" z& r+ dvar Stopped: Boolean);
2 l; |9 M( R; ^5 y: P- Abegin
' U1 r: r, z+ L/ {! }Stopped := True; 4 y2 F7 l+ i- X# R( U
gbCanClose := True; & `% s, e; g9 p& _% H
FrmMain.Free; 1 p% t% B+ b# C5 k, u: X$ h
end; " T& o% W2 ^/ l
$ f& v8 K7 b$ |* S
end.
2 l. L2 ^8 G0 e* y7 D! x+ l
" r* R: Y( k: e. u. V. V$ K0 f# w+ ~: Y3 f: q0 ?5 G: i" X% Y
主窗口单元如下: ; x5 f) ^& |. B/ P! n/ A
/ h$ }' V @/ `2 R L' g: tunit Unit_FrmMain;
' G* s/ i& x! x8 S4 x) O* G! u: w7 j% P
interface 3 X% |$ `! m' C, U8 W
. f2 w2 F# k8 N% O( i* Yuses , W, {6 k0 q, w9 l8 C
Windows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, 5 R* O" I% W: }3 o
Dialogs, ExtCtrls, StdCtrls;
4 p8 P' T# c2 z- J* R
5 o6 r* E' [! Vconst
8 O# J7 X" Y; M: E9 AWM_TrayIcon = WM_USER + 1234;
0 M/ {: p! U/ _# E# f# p6 T5 c0 Ctype
9 e0 e( ?* |. t' [2 GTFrmMain = class(TForm)
6 a: N& o, S& Y0 D+ X/ `Timer1: TTimer;
3 t6 B2 C7 r4 B, x; QButton1: TButton;
. B! P# Y6 x+ aprocedure FormCreate(Sender: TObject);
1 e$ g5 _) M( qprocedure FormCloseQuery(Sender: TObject; var CanClose: Boolean); 5 R9 R0 R/ ~9 |- T {
procedure FormDestroy(Sender: TObject);
: S# }8 g3 j% X" i+ c) l' Iprocedure Timer1Timer(Sender: TObject); % A7 M/ s/ V5 q& ~
procedure Button1Click(Sender: TObject);
! G% d) D6 N$ o9 M2 {$ o" bprivate
6 p# s" ~4 Z- O6 h( I; u{ Private declarations }
0 g. L4 c0 _6 o; V7 k6 ~IconData: TNotifyIconData;
0 ~5 E* e+ n) B* q5 f3 E, nprocedure AddIconToTray;
& c6 ~7 } Q% K6 e7 [procedure DelIconFromTray; / G5 s! V7 s& U4 \# W
procedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
8 m) P, V- g" s2 p. ?/ q; Zprocedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND;
: r% P* P/ z* p! v* A! P1 r7 epublic - \# d, U7 \. n4 G
{ Public declarations }
( ]9 C; ?" @0 N+ K5 o6 Rend;
4 Q0 M. P; ^0 a7 m2 N
5 [8 u! u# H+ W4 G2 d ?: ovar , M* _1 V+ q0 u9 L3 m3 D& O5 V
FrmMain: TFrmMain;
5 Y* ] I& N# B0 @/ h* UgbCanClose: Boolean; 0 E& x7 e9 ^$ d4 a( D I% p
implementation ) t3 G2 }" R% V( ]6 @9 ^
- F/ e+ g' P" g) u& }. f{$R *.dfm}
/ z. B* ^7 x* q9 p
4 z' X8 q' ^% b1 u" v2 v2 O9 uprocedure TFrmMain.FormCreate(Sender: TObject); 7 e/ {+ u6 `) E3 X9 q; W7 V: V
begin
' R& Y3 k: h" D, G* CFormStyle := fsStayOnTop; 9 [1 Q' ?( u: S) F9 i3 v0 |
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW);
7 h3 H: T# G5 x+ \0 W5 `gbCanClose := False;
4 L% E1 R, p1 x% K* |9 lTimer1.Interval := 1000;
$ u$ N; e7 E! p2 S( i0 M2 ETimer1.Enabled := True;
+ J& c$ M. d9 I" V$ ]7 ~( Send; 1 l6 S8 l4 l( A' x/ L/ j; Z
! O2 d# |: q. j& C3 Tprocedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
/ T/ k, K2 ~, g* ]begin ( S9 p4 f9 o5 p' x4 V8 Z+ n
CanClose := gbCanClose;
( V. w F) M* y; Y, Y( nif not CanClose then
) v1 s: a6 A! N3 tbegin " i7 I3 J8 w L, N( `2 K
Hide;
8 j4 Q! e7 D/ L# z3 zend; . x9 ?7 Q6 x9 d4 \% z
end;
( P! ^7 F; M1 K
4 h7 `9 c! o! M5 q! Xprocedure TFrmMain.FormDestroy(Sender: TObject); & X. j* A$ q8 j
begin . l+ {% z9 s0 o7 ?+ x
Timer1.Enabled := False; * ~! n' f/ p9 h
DelIconFromTray; 3 E! u3 s C0 V0 [0 G1 k: ~: h
end; ) A2 T: W, _8 H- n7 h) M% O; y
& S3 D% v3 `3 i
procedure TFrmMain.AddIconToTray; 9 O4 z8 }/ Q2 L9 g, P$ v' z2 ^
begin % ~9 r5 G3 o O1 x3 F& ^
ZeroMemory(@IconData, SizeOf(TNotifyIconData));
8 g- ~9 k6 q* Q8 n7 `8 c6 H) mIconData.cbSize := SizeOf(TNotifyIconData); 8 k" z0 j! x( P X# c$ b! @+ J$ `6 H
IconData.Wnd := Handle; : L$ }) u" S( A! h; Y
IconData.uID := 1;
2 d y: Z+ {' o$ x, z) u5 H- ]IconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP; 7 I/ w) X% D( w: c" u& k
IconData.uCallbackMessage := WM_TrayIcon;
0 q$ p% D( Z T8 MIconData.hIcon := Application.Icon.Handle; : p2 b7 j0 N& B0 S* a$ c
IconData.szTip := 'Delphi服务演示程序'; $ v- h& c- \$ Y8 Y! q/ Q
Shell_NotifyIcon(NIM_ADD, @IconData);
# v+ X2 \6 ?( @end; " S2 i g! l$ G. V
+ c6 o+ l8 G7 x
procedure TFrmMain.DelIconFromTray;
# l9 U$ u z# Q' j7 A/ Kbegin - P3 A" {7 n+ n; _" ?) E
Shell_NotifyIcon(NIM_DELETE, @IconData); % ^ _, a7 y7 C) m9 @
end; 0 \3 J' f6 C% w$ g" r, W+ ]* y+ L- f" E
& Q! e: O1 X5 D: L+ {
procedure TFrmMain.SysButtonMsg(var Msg: TMessage);
0 x! s7 f( ], u. a7 w. F& O. X( fbegin
8 h0 b& m5 b( E- D( U( |1 I3 eif (Msg.wParam = SC_CLOSE) or
- {0 M3 j3 h5 `& l' }8 P(Msg.wParam = SC_MINIMIZE) then Hide " l. ?0 f$ i( B- m# X7 T9 b
else inherited; // 执行默认动作 1 J# p( `* Z9 V
end; * {1 H8 N; `" ~$ X3 |2 O$ O
( c+ z! u3 |0 E( w6 F* \6 g9 aprocedure TFrmMain.TrayIconMessage(var Msg: TMessage); " {% C& B ~- Q4 ~# t
begin
+ w4 t' n4 Y2 I8 {if (Msg.LParam = WM_LBUTTONDBLCLK) then Show(); 7 {; f9 }0 L i4 A0 B Q- F
end;
6 S9 W5 k: S' ^7 N. m' P
( y8 R7 d( ^4 `" cprocedure TFrmMain.Timer1Timer(Sender: TObject);
' _8 _2 m f4 R1 mbegin
3 Z, k, \% y: k- U' Z: zAddIconToTray;
1 M+ ~( ]2 G' P9 \# o& w$ @end; 6 }+ V2 I8 r+ Z8 S0 T2 F
- Y9 N! W Z7 }2 e* s
procedure SendHokKey;stdcall;
- @: G) H6 m$ S1 t5 R. l7 \% Ovar
' m m+ @, W! D- RHDesk_WL: HDESK;
% ?; C( Q: I# Q. S- Ubegin : e( f' O. U3 r0 ~/ W, e4 ?7 h
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK);
: u! ^' F' J4 Tif (HDesk_WL <> 0) then
3 \# f. a) B+ J& K" ]. ^if (SetThreadDesktop (HDesk_WL) = True) then
4 r9 X; e( m& y. I, wPostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE));
. h" ?- }: ^5 V/ q2 j( j& C; X( mend; 3 F, @% F) f G/ H v: F
; h3 U5 t; P4 a5 f# s }5 v6 C6 y
procedure TFrmMain.Button1Click(Sender: TObject);
& l4 d: E* D" z7 G8 Z" X5 jvar 1 e" B' o N+ y! F7 u, y3 D
dwThreadID : DWORD;
( ~; ]) k3 _. _' Nbegin
9 O# Z" b) w1 t! h7 uCreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID);
' E0 }9 E& R6 A3 f% Oend; 0 k1 u1 A6 O# e, j) |
! a4 r/ V( r6 w, Y; g9 E& r
end. 2 O3 P7 Y( h& k
& U1 r) V0 E' p+ L$ l
2 _2 ?" V/ U' T6 r/ S: J! {; {. y补充: . _. Y( B- i6 k6 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.
0 L8 f- z: x7 I3 q. B3 e- j& |$ m G; d3 e
(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.
+ P3 \( Y+ u; a* v2 ^$ T( d" [9 U6 _+ G9 X+ u) s c9 i$ R# x
(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:
/ Y1 N5 }; ~7 F0 h0 t% R6 ?2 P9 x9 vunit ServiceDesktop; / Q6 M* \5 J1 z/ M1 V
; l L% k4 _. c3 Iinterface
+ s: H$ m* P8 h/ g
6 \$ z( R: K% O; l. I/ u% H) _function InitServiceDesktop: boolean;
. N* R9 M/ Q1 s8 gprocedure DoneServiceDeskTop;
. x! p' _! v% `; o. c4 Z0 |- \1 Q' U6 I/ u2 y8 @7 t3 V
implementation
7 h' D; @6 a. v, s" B2 W3 f
4 D: j Z6 z: A( b% H8 s' Quses Windows, SysUtils;
5 t. T; F: S6 T/ z$ [) X2 ~& r# M I0 B! J9 Q" i* N( }
const
0 l0 X6 v- y: f- k! F8 a! l2 oDefaultWindowStation = 'WinSta0';
4 L8 }- q% u" r- c' UDefaultDesktop = 'Default';
+ U" P- ]: C* G1 k7 d) k/ c/ V' W% yvar
+ Z) N$ `9 U o; h) g5 qhwinstaSave: HWINSTA;
0 _0 Z) e# H# O8 C9 S$ ohdeskSave: HDESK; 6 o( ?3 _$ P% |) X, ]1 ?+ l7 K7 p3 Q
hwinstaUser: HWINSTA; 7 U1 D2 v) [6 p8 v9 |1 a- {
hdeskUser: HDESK; , o- l7 c; ?( X! W7 B- T1 v6 O
function InitServiceDesktop: boolean; 9 k" r, l1 _% X0 Q, j% I2 K; q
var
) \% g% L/ q& g! IdwThreadId: DWORD; 9 o* y$ f% ] s$ a Q7 ` n
begin 2 v( V2 ^' f. h( T. \
dwThreadId := GetCurrentThreadID;
" O1 ]# F& M) X// Ensure connection to service window station and desktop, and , K5 E& F% v O% L* }: I# t
// save their handles. ! A2 k& t0 r, Y3 e1 N, V* m! \8 |
hwinstaSave := GetProcessWindowStation; 0 V: Y9 q9 R" Z* [" [& i. f3 M
hdeskSave := GetThreadDesktop(dwThreadId);
) M% h" h- B/ E& J. U/ N$ i2 V" Z1 q: m4 e& }: Y. U
5 ^# y; o" h$ c8 [4 @2 OhwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED); : S0 F& {( r1 O8 U# f% G0 n
if hwinstaUser = 0 then
* T9 F* r& G8 f v% f l6 r$ ubegin ; k/ N0 i9 c! R# C
OutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError))); : [( \# C$ B, d/ l) i! E
Result := false; 2 N4 ?2 Z$ e9 {- `0 P4 E' x4 S
exit; 8 [* s* p5 }" |5 W* M& l
end; ' {$ w, R. g- s0 i+ _
" t0 w% b3 q3 e2 M$ A3 b8 Qif not SetProcessWindowStation(hwinstaUser) then
?9 E( q+ z; T @- ^begin
% K6 h+ ]3 r( k: m1 A/ [+ T* q" dOutputDebugString('SetProcessWindowStation failed');
- [1 R- Z, W: v. @& {8 wResult := false;
& N! H3 p2 j" G P6 Nexit;
/ o- e% d- G* `) V, |( d+ m* ]' i' C& fend; ; ]" q% ]# V8 Q; p8 B
7 e$ B$ ?( \3 H1 C
hdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED); ) o1 M" c* @% H+ H
if hdeskUser = 0 then
' x% S; _) F$ S* a$ [begin
. }( \. l% Y" o* vOutputDebugString('OpenDesktop failed'); 8 n1 s8 g" h0 {: ^1 c! }
SetProcessWindowStation(hwinstaSave);
- a" H' Z, F$ jCloseWindowStation(hwinstaUser); ; p+ n4 w* _4 d7 g: L2 W* R, u$ f
Result := false; ; F7 Z9 E( E& u- o, O9 V
exit;
2 b% P/ v% h; h2 F1 A% O% Pend; ) i9 I' s, k* B) ?
Result := SetThreadDesktop(hdeskUser);
. o5 H- g1 s& v$ U0 U& U$ Tif not Result then + s* l& Q6 P/ X. I& z, p
OutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError)));
3 C8 W+ ?4 B5 z# l8 `; V8 send; ' ?7 X6 v# i, D1 |$ |4 O0 I& N0 R
: |( w9 ~ {, b j
procedure DoneServiceDeskTop;
z0 f& ?! A3 k: x3 ^5 Mbegin
$ J1 U& i$ ~4 `) T& b( [- y// Restore window station and desktop.
% X; [& w* B" u( F. o$ cSetThreadDesktop(hdeskSave); ! H: F6 `2 k" f+ @. b6 P& E4 H, l
SetProcessWindowStation(hwinstaSave); 9 Y+ d. l/ p: R, B# S
if hwinstaUser <> 0 then ' g+ D* s% G$ m. d
CloseWindowStation(hwinstaUser); 6 D+ |: r" v: [, [4 [
if hdeskUser <> 0 then . W6 v. p) n7 I @$ N) n; K- r
CloseDesktop(hdeskUser);
% J$ s; v. v$ {/ s; q9 w) A- Send;
* T% a" K% k* h$ W/ I
: z7 O1 `. F1 ?5 `initialization 5 b3 k. h1 U: P) @: J6 }4 d$ a
InitServiceDesktop;
; f# @0 ~5 |* W; jfinalization
2 e: a, Z6 S5 @3 _9 BDoneServiceDesktop;
. J( p3 j6 a; J) w% H( @7 jend.
. |/ n. P, [' n6 t6 d, r更详细的演示代码请参看:http://www.torry.net/samples/samples/os/isarticle.zip
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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: % Z9 r* G- s4 ^4 j# v# M
/ }8 h' z" T( j) B7 k- [/ w2 l" eunit WinSvcEx; ; U" q( I% `! N4 O% j5 g) {
, W3 R O2 y( ?
interface
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uses Windows, WinSvc; 6 E. r/ |" L: R9 @5 h1 _
* n8 i" a3 Y* q, w2 L6 `! q) i0 U
const " @) T# A8 z, @+ Q
// % P" O" R7 \7 L
// Service config info levels * k% j2 ~! K, U. `
//
; A, }" T" ?5 L! r6 W2 a+ NSERVICE_CONFIG_DESCRIPTION = 1; \- S- ]( i% m X
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
zan
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