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(1)不用登陆进系统即可运行. $ I7 h3 ^: o! e$ [8 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.
. c) ]7 b h+ B1 e9 A
* ?( i+ K2 B; W1 E0 k J( _- Q 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.
: v5 x1 V2 n2 b+ 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: 5 e* H r- n. C4 B6 T4 ?
7 F4 z# Y- o! E" K. ]5 Y9 y, |8 S
(1)DisplayName:服务的显示名称
: x8 b g+ a9 u' M D9 k (2)Name:服务名称.
3 _, ]4 C1 d* R+ E
; }7 I9 o; z9 B" @ r" 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.
: i, N( F' |7 u
" ~8 i3 m4 q9 z" X 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. ; X8 E$ c% F1 e: s7 q
' m+ r" j- Z, g, Q 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. # X7 |5 p" v- Z
, j" r! K) {3 l
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: 3 E! M- k& P: a) C. H, a/ t
% h" R4 t3 K% x/ p
, l N5 q, g7 C) O/ ~, Xunit Unit_Main;
$ V- s( ~4 }) N y3 Q7 i1 d; P
5 K2 c( X' |% A' [! cinterface $ _, t$ I; Y+ j' r# h$ q
: ]/ K( y" r- Z
uses
% r. `/ [/ e; b$ r3 ]Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; # Z3 L! d- H1 Z) J# R/ p4 n; `
) [: z6 t* x4 `type + o0 G; X" f7 A2 G& d9 \
TDelphiService = class(TService) 1 v& S c C/ |$ y% S
procedure ServiceContinue(Sender: TService; var Continued: Boolean); * p9 D. K! k' \5 p
procedure ServiceExecute(Sender: TService);
: \0 { @/ V) l; hprocedure ServicePause(Sender: TService; var Paused: Boolean); + \3 S+ Y/ Y( [! W* ^% Q4 R
procedure ServiceShutdown(Sender: TService); . B# i9 b: A' T* b) x$ P4 X, G0 a6 o
procedure ServiceStart(Sender: TService; var Started: Boolean);
: f& H" U. A' ?% K$ W% A7 ]7 eprocedure ServiceStop(Sender: TService; var Stopped: Boolean); 4 G3 e; Z7 p9 e `0 \/ _
private
6 Z* h! P* I" r/ V$ ^{ Private declarations }
! h8 n5 q* @, a% |0 [public 6 z5 T- A9 T* ^1 O1 T
function GetServiceController: TServiceController; override; - t! r( q. k/ Y8 l+ J) z) X
{ Public declarations } , s- R9 ?0 k9 [* a. Y
end; & E4 {( d" l7 w% Z: v% y2 d- J& |
: d6 r8 R) [" B' j7 C8 C+ o; F; pvar
% n/ `7 ^; {* I8 u8 B+ @8 tDelphiService: TDelphiService; , _8 @7 q2 N. _
FrmMain: TFrmMain; & N& S# ]. a2 \" A$ j5 I8 j
implementation
/ R0 a/ Y1 N+ {9 m. f/ T0 I/ T. T/ D3 s2 P
{$R *.DFM} + I* S) G& [. n
3 v! b7 L& b+ X/ k, S# d# K5 Mprocedure ServiceController(CtrlCode: DWord); stdcall; & \# ?1 W$ ]% B8 Q+ F5 R
begin
7 R, _7 e" o! q8 D4 s" \ lDelphiService.Controller(CtrlCode);
, c N) Q$ l$ {; |4 Bend;
) k' u6 _4 ?/ s5 @! q& d! \, b; O; H- x
function TDelphiService.GetServiceController: TServiceController; . h- \8 r& G3 h& F, g* ~$ ^/ z# j
begin ! Q6 h% _# ~; j8 a4 J3 I
Result := ServiceController;
# v& l! V; X g: X0 kend;
/ y" h- t. m# W9 Z; X" u5 I
1 J( p0 K7 o8 K! l, L/ Eprocedure TDelphiService.ServiceContinue(Sender: TService;
0 @( A p% @4 r# svar Continued: Boolean);
, Z2 [" L6 ]$ Y* z( n4 |# Vbegin + ?0 b" {# Z& {* [$ \" J1 X. e! q
while not Terminated do
' z! z V4 K- n8 L: S1 A* `begin
, V1 b+ i. Q$ L5 p. @Sleep(10); 5 s6 I( o, ]* k8 A7 k6 {. L4 z- X1 N
ServiceThread.ProcessRequests(False);
0 e$ r4 _3 O1 H0 _( Oend; - ]5 U' N) r& z' g& W* t: d
end;
) y1 Y$ n' y1 H8 x9 n7 @& Y
. `* o) j9 } a* I; i, k& D! E- [1 Mprocedure TDelphiService.ServiceExecute(Sender: TService); 4 Y9 \' }* n1 C/ @" O. O4 i5 v
begin 1 h( J/ z7 l) F$ u: N0 u1 o
while not Terminated do 1 c9 {$ R2 k ]# e
begin h& h& M# R8 H: G
Sleep(10);
1 j T' N/ R* o! i J7 @ServiceThread.ProcessRequests(False); 9 g8 v) Q0 c" C; W
end;
1 i4 X6 s- l+ p0 A$ C c: bend;
: m4 K( S2 b1 [4 A& h
5 _* M0 l/ a1 @procedure TDelphiService.ServicePause(Sender: TService; 1 h$ W# V2 s% Y, K$ a
var Paused: Boolean);
+ {/ e) a0 _$ P o5 Y" q4 ^begin
( s; P; R9 L V: Y6 D6 QPaused := True;
2 @0 E9 R, D( u" N! s, dend; - P. d# B( R$ d
3 L% T& |6 E4 V1 f3 {procedure TDelphiService.ServiceShutdown(Sender: TService); % t% M5 c" k: |( e/ E+ O( y& p
begin
, f3 Y6 a- z) K& |' }9 V' t. XgbCanClose := true; % M/ z- {( p; {7 d% w! E
FrmMain.Free; * H+ z6 M( t7 J; W6 c3 _- D
Status := csStopped;
# J( A- X) y7 @: xReportStatus();
/ e, u1 a W! e) v% q& j4 Gend;
, E* f( P5 m4 v) U+ ?* J
+ R. @6 G2 w) e. z0 U1 p. tprocedure TDelphiService.ServiceStart(Sender: TService; & y1 C* q0 Y+ v, A
var Started: Boolean); # I* p0 c% F8 F. I( s1 A
begin
, o6 l) \* v6 G5 c7 RStarted := True;
! w8 B' E* s0 ^, d+ `$ V+ s! @Svcmgr.Application.CreateForm(TFrmMain, FrmMain);
3 _2 w, g `7 qgbCanClose := False; + V5 i! n1 I P o1 c# W B2 c, L
FrmMain.Hide;
( J' z: D+ d$ |* W- C# B8 {end;
3 y& G2 Y `. _3 A* E0 `3 w
8 b7 m6 p* _1 L2 g8 c1 Dprocedure TDelphiService.ServiceStop(Sender: TService; 2 b* {1 v* _, ]9 M( M, y4 c
var Stopped: Boolean);
/ ]5 `. B; f ebegin $ ]7 R1 I# X1 N6 c9 l; }
Stopped := True;
- D+ ?+ G _- x( BgbCanClose := True;
7 ]) ^& E- P+ g6 ^4 o$ cFrmMain.Free;
+ n8 t7 f4 Q! q7 tend; : k8 o( C5 B5 ~) C* \
0 d6 O) e# J7 F% D/ C' w
end.
$ q3 z4 Q1 v! E/ F2 ?5 w2 `8 h$ W# s
: b8 |7 q z) ~! e
/ f' H* O" I4 U8 X$ q) W. K# |% K主窗口单元如下:
! X Y7 G; t: [+ e* |% z$ z% J# G0 e- T$ ?
unit Unit_FrmMain;
6 Z( d9 O$ ~! a0 e, k; y3 M/ T3 F
interface
/ y* }& _+ \2 ^" g. [5 b8 P" w% s. A3 C7 Q/ c- Y0 h& T: G
uses
2 D: V9 P9 W% Z# o& @+ G: EWindows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, 4 M0 l, V' \( H! l+ [- h
Dialogs, ExtCtrls, StdCtrls;
+ V$ r8 v6 t# H# `, z
' D( J' G4 d" }" ^const
. u. w5 a: h) BWM_TrayIcon = WM_USER + 1234;
* T0 l* ^0 d7 s1 l8 W2 {' R A) ttype 1 g7 V/ j0 P b. e, n0 q
TFrmMain = class(TForm)
$ s- U4 j% o3 d3 }Timer1: TTimer; & K) p" U& s; f
Button1: TButton; 4 s$ {1 E$ M; u/ P) ?
procedure FormCreate(Sender: TObject); % f) w: J$ i; T
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
* K7 z! v$ `. O3 c9 {1 uprocedure FormDestroy(Sender: TObject); ! \: L& G* H. k/ n: A
procedure Timer1Timer(Sender: TObject); / T+ O% }$ v- N% ?# L
procedure Button1Click(Sender: TObject);
# g% S2 m+ z; n( O+ g. s- [private
8 ^9 a3 x/ ~* A2 `5 Z j{ Private declarations } $ T+ z8 ]+ ` v9 Z
IconData: TNotifyIconData; * \2 k$ s- T. |3 M
procedure AddIconToTray;
; s* o# v- G+ j5 _! P' Cprocedure DelIconFromTray;
; l: U) N' g/ g! D, P- x8 Y5 mprocedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon;
. {! a# F3 q& t4 Tprocedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND; 1 z6 p) o2 [$ ]
public * N9 P: E: q! r4 U) m, b% x
{ Public declarations } ( E- B( Y7 U! C( V
end; ! K1 [$ S1 a5 g3 p2 Y& x( ^' m
* M0 S$ W% V1 _+ i$ l5 w) _var 5 u1 U2 z' b7 s8 `6 e2 A6 E
FrmMain: TFrmMain;
7 D: [9 c+ {8 j( j. r, [: sgbCanClose: Boolean; " l& z* L) |" Q
implementation
9 E, E5 H7 V" j+ K
& J( D2 ?- k r5 `1 r# @+ o: X{$R *.dfm}
, |( J8 z4 r3 n5 c9 N* I; w1 {1 o; W z$ f, E9 e) n2 j0 J
procedure TFrmMain.FormCreate(Sender: TObject); : h5 P* [- N1 e( G. U0 k' v
begin 8 S* y( g/ D) H+ H
FormStyle := fsStayOnTop; C- }8 x B5 ~6 z
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW);
?5 C$ K) o4 K# lgbCanClose := False; . y3 O; E2 T& i O9 Z: [% a* S) J5 g
Timer1.Interval := 1000; 3 Q5 j* |/ V+ u+ i/ c$ D& d/ d0 E
Timer1.Enabled := True; 4 J2 B5 }& v; j0 G7 Y
end; $ y. j Y; \% s. {% [1 ~/ l5 x8 y
1 T6 j! i+ E$ j* a8 j
procedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean); # s, W7 Z ^- w, Y
begin . s4 m8 p, S. B6 D
CanClose := gbCanClose; ; j$ S6 m% s/ z4 }, o. ?; t
if not CanClose then 5 v/ X# ~, { q- ?& a
begin , B# y+ a* ^) w0 j# Z( c
Hide;
: [; d8 h" V3 s) Vend; f, I: K8 w* W6 z! H
end; ) Z' i" A) @" M$ J! {/ X
" }% o$ T5 D, S. b, Eprocedure TFrmMain.FormDestroy(Sender: TObject);
1 M( r9 H5 ^4 k# p7 Hbegin - D+ O4 P/ x+ g* \: ?' j5 K/ H1 l
Timer1.Enabled := False;
9 Q! P4 k) q) v& Z/ a1 xDelIconFromTray;
1 n" q' P5 x6 i! l! m/ f8 bend;
" S; {" Q" Z3 C* f. _6 h/ X; Y' y" N: G% u' N) r) V& `
procedure TFrmMain.AddIconToTray;
3 B N: w+ y, \/ E) pbegin
( ^) @- w/ x8 `+ k! NZeroMemory(@IconData, SizeOf(TNotifyIconData));
' o, Z. T5 v. |" \: MIconData.cbSize := SizeOf(TNotifyIconData);
' ]4 \9 K7 V# C, CIconData.Wnd := Handle; ( Y7 Z" R8 f. G
IconData.uID := 1;
' K/ U3 Y& }1 S+ FIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP; 9 d+ G/ q/ y, L" n1 n! b( v3 W/ P( b
IconData.uCallbackMessage := WM_TrayIcon; 5 {8 N% K" P2 S: U- u+ r# ]) F: Q4 v
IconData.hIcon := Application.Icon.Handle;
) I/ _/ ], W! \, U4 K% W* L& R. vIconData.szTip := 'Delphi服务演示程序';
+ [0 p4 P: |# _0 s9 NShell_NotifyIcon(NIM_ADD, @IconData);
: S) \- T$ f7 d2 T5 e: V# N2 m7 pend; 9 C; Z5 Z" x( P8 {0 {3 K" N
5 @4 v- j! V% ?
procedure TFrmMain.DelIconFromTray;
& V- `; H% Z8 W3 k4 qbegin 7 b D# |5 _4 A! j
Shell_NotifyIcon(NIM_DELETE, @IconData);
2 K7 s( h+ _( Q4 W4 Vend;
! f* k: V" k7 V( Z
0 U' S* V, X- @% ?3 C: v! ~! U" w) oprocedure TFrmMain.SysButtonMsg(var Msg: TMessage);
: \6 t5 C6 V! h2 r, B$ s) S& M7 `4 Wbegin
8 @, K) t" B- Q+ f0 m! ^if (Msg.wParam = SC_CLOSE) or , u+ {. h4 {0 H- c s3 [: n
(Msg.wParam = SC_MINIMIZE) then Hide 1 c! O. f G2 n& [* x5 j
else inherited; // 执行默认动作 * n) p* S! |& C, S2 \
end; 8 O* [) @8 V5 v n2 A7 }
9 m5 A+ ]/ [# ]0 _
procedure TFrmMain.TrayIconMessage(var Msg: TMessage);
) R1 _. i: A9 y' O) pbegin
) U) v2 y+ H& D- H7 F( F" s: y# w1 |if (Msg.LParam = WM_LBUTTONDBLCLK) then Show(); : `8 u% O q% w0 w" s4 G
end;
: X6 _. E) R) N' _/ Z6 M, ]. j* v( U1 w, \0 ?! L9 \- m
procedure TFrmMain.Timer1Timer(Sender: TObject);
" u% I3 a$ } Y2 p5 lbegin
# m( Z- A, H9 @AddIconToTray;
" B( u4 q7 ]$ h- a- oend;
# e* R: l7 Y. }; k$ Z; d2 Z0 O+ j1 Y3 e1 T: N
procedure SendHokKey;stdcall;
; E2 W$ q' p8 p9 \+ \& z9 xvar , u# \ m9 Q9 Q* f0 A- \
HDesk_WL: HDESK;
' g: Z* r# D& h$ Obegin & x/ r1 ^3 n$ m# T- I/ H0 {
HDesk_WL := OpenDesktop ('Winlogon', 0, False, DESKTOP_JOURNALPLAYBACK);
& n3 A. J5 R s q$ b Rif (HDesk_WL <> 0) then ) M& V7 g" P6 J7 P, x# ]$ S3 U
if (SetThreadDesktop (HDesk_WL) = True) then 1 b+ X+ e7 Z& @1 g: N
PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG (MOD_ALT or MOD_CONTROL, VK_DELETE)); # W+ I9 @( F/ V. j+ c
end; 3 l$ {( n! H& x' p9 Z' L6 {
{; | |) L7 A$ Rprocedure TFrmMain.Button1Click(Sender: TObject);
, ] @% {6 N5 r# vvar `8 C! Q) F7 i- R
dwThreadID : DWORD;
6 D" q# p5 s, V8 ~ Z5 j5 `( r* kbegin
* U5 |9 S9 q- ?/ f) L. g, bCreateThread(nil, 0, @SendHokKey, nil, 0, dwThreadID);
, U* _/ w$ x: m9 O; ^- vend; t' e' H9 G3 J7 b/ i) F) { A8 Y
: u+ C7 a6 X+ |! |- s4 r- R8 J3 {
end. ' V: r6 Y$ e) }+ @$ ]
9 w1 d8 [" e8 e8 @* F5 M* d+ s% j
- o/ v+ D" ~- T3 W* U) b补充: 0 F6 e" M" L% g% q
(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 t6 N8 S3 ~5 U3 }
9 }9 b9 d2 g- T* b, @(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.
' r! d9 g' L: s) S4 y6 \6 K$ @
/ d5 H" H9 Y0 |! t( Q+ b8 U(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: 8 `! x1 {" w& p/ P$ M; I# R
unit ServiceDesktop;
3 F/ ]. B8 u, t0 z
# d- w1 b+ F) q9 M6 q) qinterface
! f3 f, u& r: x- ?1 ^$ J* W+ j% {4 L4 V( F% n+ ]3 `- J
function InitServiceDesktop: boolean; 2 x- S' k9 K9 R* H, ]1 e
procedure DoneServiceDeskTop; % x- n& _1 Y1 v- q3 t
# f6 T9 b) e( H0 w+ k4 qimplementation
+ V% r, H. o2 Z7 J& p7 c' U5 g' R. @, F( b2 h7 ]7 K1 g2 S
uses Windows, SysUtils;
+ N. T3 I3 G3 z/ ~9 J# _3 {6 U
6 c9 H+ }) R7 K- O+ L, nconst ' X8 Z6 G! j5 g! c5 h0 _
DefaultWindowStation = 'WinSta0'; & _/ d6 X8 I, O* N2 N. _
DefaultDesktop = 'Default'; 5 L _2 i) H3 O; W8 G) Y- W
var
8 w; p6 }/ \. X. ihwinstaSave: HWINSTA;
$ G9 w8 g$ w2 S# n; UhdeskSave: HDESK; 0 D5 s, U& k! e) X) K0 w5 t
hwinstaUser: HWINSTA; 0 @5 }( ^ P5 ?! G6 L0 M6 e
hdeskUser: HDESK; ; @/ A% V$ I$ [" a& f- m
function InitServiceDesktop: boolean; ! X1 r- K5 `) X8 z. k- m
var ! D2 b. y% q0 \1 r3 g# A+ k/ I
dwThreadId: DWORD; 2 |# X: w& R, w0 {6 r3 ]$ R
begin * C# Y/ W( }3 A) _( ]& B: N% I
dwThreadId := GetCurrentThreadID; 3 k1 A5 y% V7 E8 M
// Ensure connection to service window station and desktop, and , b$ n1 A8 ~* E6 g+ X
// save their handles. " F" }. _- l3 c: _8 w" N" _1 s# i( r
hwinstaSave := GetProcessWindowStation;
) I ~! D) B) M; |/ [+ s; T; n. b, lhdeskSave := GetThreadDesktop(dwThreadId); 0 b3 o* M. F+ R5 `5 D p' j
, }# Q$ i" s5 l1 h$ P; E
/ J: @! ^8 V |/ X4 dhwinstaUser := OpenWindowStation(DefaultWindowStation, FALSE, MAXIMUM_ALLOWED);
4 ~7 a/ F8 K9 u* ?( {& h" {& pif hwinstaUser = 0 then
I+ u6 _; |8 {8 f+ [& mbegin ; L+ H* d1 m, L( _0 ]- U( d; e
OutputDebugString(PChar('OpenWindowStation failed' + SysErrorMessage(GetLastError))); 4 f5 @* b+ f' G; B( I) [+ m" r1 u
Result := false; # ?: \: }9 U+ V u
exit; / H! D: p2 }5 o& `+ x
end; 2 r- a$ d, U/ O* R: ~& X( R
% H6 t0 s5 i U' z! }if not SetProcessWindowStation(hwinstaUser) then
( K% G& w' c& L Sbegin
2 }4 Y5 @* O+ sOutputDebugString('SetProcessWindowStation failed'); 8 `" o9 L T, w# j8 \# R
Result := false; 3 Q/ S: }0 s) H8 d/ ]+ G- T/ s* y) ]
exit;
7 y+ J: h( e9 send; 9 a: ~' T% `7 f: |9 v: [
& }) m& z1 k% q. P! s- |2 MhdeskUser := OpenDesktop(DefaultDesktop, 0, FALSE, MAXIMUM_ALLOWED);
- _) `3 u [% P! O2 C0 y" Pif hdeskUser = 0 then ' B9 D6 B6 m1 j5 o. I$ R+ D
begin $ d# z3 W2 ?. \/ m& l/ |: K
OutputDebugString('OpenDesktop failed'); 9 i) L- y; V+ F+ P! w4 y
SetProcessWindowStation(hwinstaSave); 2 M+ |0 V/ N$ L# ^
CloseWindowStation(hwinstaUser); 4 h; l6 N, E2 H& ~' Q1 t1 u
Result := false; ! u U ^! @6 H' Q7 R* I4 S
exit; # D& i, Y K6 W7 S/ W* S5 }
end;
0 @+ J: I( w& O, f$ S8 v6 U. \Result := SetThreadDesktop(hdeskUser);
9 P+ o2 h# f; a4 Eif not Result then
) K& ~' k' [- b8 F* ~$ fOutputDebugString(PChar('SetThreadDesktop' + SysErrorMessage(GetLastError)));
6 H# R; ~$ p0 l$ z4 P3 a: @# ^2 jend; 3 d, F" z* b; y
- C0 r0 B7 } J) E. _procedure DoneServiceDeskTop;
9 K" F) F: |+ R- l Lbegin t6 U; x' z6 g# t
// Restore window station and desktop.
. T. N1 `& m% Q- T8 ~6 f. r3 NSetThreadDesktop(hdeskSave); : _- j( D, P- t9 Y2 `; p! z, R
SetProcessWindowStation(hwinstaSave); * r O0 v a0 F8 v
if hwinstaUser <> 0 then
5 \+ N( L1 d+ F: B$ g: JCloseWindowStation(hwinstaUser);
( A% ~, n9 G7 b- p$ uif hdeskUser <> 0 then
9 D! {9 R; e. r1 o5 h9 u$ ACloseDesktop(hdeskUser); % Z" L# Y; j6 u! i: K
end;
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6 w7 D9 `0 t9 @ _6 X5 jinitialization
; e( f. s# l- d0 U: |4 bInitServiceDesktop; . D. y' x2 X7 j' F+ b" t& W: J
finalization
) |$ f1 m- x4 mDoneServiceDesktop; 9 f m+ K+ Z2 q
end.
$ r/ e9 K3 M6 p B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 |4 ~, b) N8 F1 T6 w' g: c(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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) W! K6 A9 I2 dunit WinSvcEx;
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interface
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uses Windows, WinSvc;
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const
. m3 P: @" \6 H: f7 U; m& [//
3 ?+ h# u* s, W5 l$ l// Service config info levels
' [: u+ t6 F6 ~# x$ k2 }//
/ o$ t& v& v0 }SERVICE_CONFIG_DESCRIPTION = 1; # ?. H( s+ h( Z0 s* Q4 l# s( j
SERVICE_CONFIG_FAILURE_ACTIONS = 2; |
zan
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