(1)不用登陆进系统即可运行. / ^( J5 m/ |+ N6 W. X% D+ N
(2)具有SYSTEM特权.所以你在进程管理器里面是无法结束它的. 8 f' L- e6 `' c7 d3 U }) c/ v9 g" P* F
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. / h; P- x R1 ^
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: , l9 k. E$ d8 e' X0 L" F
8 }* [8 n, t% b (1)DisplayName:服务的显示名称 * s0 ?5 k5 c9 {5 R (2)Name:服务名称. i; m$ ]" Q- X: z, } ' X, y0 A( @" v9 R 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. 9 H) F5 `) T3 m O- `2 S , s5 u) [$ @- A ^6 Y. V9 d0 g 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. 7 E$ r$ q. w! n& S! b# `! Y! H 5 z' x- J5 A: B6 u1 Q" d* 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. ! t8 z) ~2 L5 e; f: u: _' A' _
) |$ o2 ]% a5 Y5 ~8 s 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: 7 R: ?$ x& ]! E
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unit Unit_Main; 5 r7 D( |! E+ g g
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interface & W/ m& `! W) r' Y4 G* d8 Y $ O) v; b+ u) I. L* V* guses $ }- v0 p8 ]! J8 F. M) I5 _* W( B+ A7 r
Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, Unit_FrmMain; 6 o4 d7 M" B% I0 a G 3 P- z/ l/ B& E$ X! i; }type ' e$ x E( D. u9 U
TDelphiService = class(TService) ; `1 U+ ]' H: @7 z+ Y8 \5 k
procedure ServiceContinue(Sender: TService; var Continued: Boolean); ' h% j% J5 C( l8 p/ _4 N
procedure ServiceExecute(Sender: TService); , y: _6 \0 P+ r1 Aprocedure ServicePause(Sender: TService; var Paused: Boolean); 9 V/ D; x8 M# k' l
procedure ServiceShutdown(Sender: TService); " H/ r1 f5 K' Y$ Q
procedure ServiceStart(Sender: TService; var Started: Boolean); 4 |" M) n: Z' s0 t7 c8 y
procedure ServiceStop(Sender: TService; var Stopped: Boolean); ) S3 f" x% V' Y2 B) Q+ K0 X4 G9 Eprivate 9 }5 f; l5 o/ S \ Q U& J{ Private declarations } " T" f3 L+ x. G! t2 mpublic ' \# P0 ~/ \ C7 l) @" j
function GetServiceController: TServiceController; override; & G: x) }# }- k# B* {, V
{ Public declarations } 2 H8 ~& S' K7 _* v% ^0 Y+ X2 lend; ) W1 b' i: k/ L ?0 Y; c) D
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var , L7 T1 K5 m6 |4 H- K
DelphiService: TDelphiService; ' i, l& g. R; k/ \7 U4 K% P
FrmMain: TFrmMain; * p# J9 L7 J) n2 _2 i( H
implementation & q( L% ?, G) E# B8 V p 7 X" y4 D( l3 J{$R *.DFM} 3 R; G: \0 A6 q" ^
9 n- g& ]$ H* E
procedure ServiceController(CtrlCode: DWord); stdcall; + E4 f9 [/ \/ vbegin # V+ _. E$ C0 U2 N
DelphiService.Controller(CtrlCode); 1 {- Q+ u" r$ [4 O- l1 D
end; 5 R+ c- i( W, S7 Q
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function TDelphiService.GetServiceController: TServiceController; - Q }% u, j3 X4 {begin * _8 |3 w* w/ W/ K0 t3 _Result := ServiceController; * V* r8 `5 W! r$ @7 u5 d; M
end; & l" k) K7 |+ D- Q) T+ R# @5 [8 {' S7 E
procedure TDelphiService.ServiceContinue(Sender: TService; : h3 u& t( h' X8 O0 F1 rvar Continued: Boolean); ( [, Q/ [) A3 }; b3 ~/ qbegin * ~& {; b- n9 W) [* H$ }3 c( Z
while not Terminated do 8 f( @, k2 E+ j; Y
begin 1 s L0 {! C1 ]' m) C: ~
Sleep(10); " n: ~# ~8 \! l+ ? E" N
ServiceThread.ProcessRequests(False); ' @5 |6 q. U7 E Y$ \: ^+ S- y* n4 w
end; 8 p8 l6 L& b7 N- k D8 U
end; 8 g9 e3 ?; P9 s% ?; M$ v
9 W# W3 u2 X. }; w0 w- W! {
procedure TDelphiService.ServiceExecute(Sender: TService); , P# g5 Y& b' s: E5 Z- g
begin # Z: v4 L- t5 S/ C* D+ H$ Q& _/ r. x8 S) ~
while not Terminated do " N+ f) i5 E8 X
begin ! E" c9 [- ]8 B5 [5 V5 L2 cSleep(10); 2 X" {4 s: n' z2 SServiceThread.ProcessRequests(False); * I4 s& [) y! m, \6 U+ Wend; + }2 c7 j2 \0 ^% W- M; m
end; 4 z1 c! p! m+ D$ O# D" }6 ?; I7 V0 P# {0 } _/ l$ e; j
procedure TDelphiService.ServicePause(Sender: TService; & ^ ~7 G* x: R' @" u
var Paused: Boolean); + J/ t% Z. ?- D
begin : v9 S; F/ }1 {: l2 f P; kPaused := True; % S. Y3 d" w2 N- ~- M1 S5 K% eend; 5 U1 J# x; f V) |, } 6 d6 `6 f+ c4 @9 `1 gprocedure TDelphiService.ServiceShutdown(Sender: TService); - C2 n0 i5 |+ Q
begin - L. Y5 o! H3 P, b8 m, L; N/ M
gbCanClose := true; - q/ L, k2 m" r1 yFrmMain.Free; ; J/ O, m. L+ F0 l) U+ p; BStatus := csStopped; b/ ~- o' ~# s! N/ A6 p+ w1 x$ uReportStatus(); 4 \" i2 P4 P: o7 _: G3 }end; $ T* D0 r4 Q9 \6 [- V1 a) Z5 z. @: X
# L$ D, l8 `: g2 k1 G: n+ iprocedure TDelphiService.ServiceStart(Sender: TService; 2 v# T* H( v( y1 U
var Started: Boolean); # d; d. P! [+ J) W) K
begin ' P& Y- h' j4 a
Started := True; . k2 m+ Y6 Y: T# ]8 V Z p" o: @Svcmgr.Application.CreateForm(TFrmMain, FrmMain); 0 Z/ `9 y. I. Z) r5 e4 J" z' |
gbCanClose := False; & C# p* D/ K5 J+ B
FrmMain.Hide; . X" \2 r: z0 |2 ?" p' O3 c4 ^7 \end; 6 \4 Y. l3 ]2 y( S
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procedure TDelphiService.ServiceStop(Sender: TService; " d" @6 B. R, P( [var Stopped: Boolean); % e) _7 ]" @* N: D; X1 @begin ( N( V: n7 D9 Z& D
Stopped := True; * u) w+ y& }" Q
gbCanClose := True; + ?" q- s6 T" C `. q5 I- K( V
FrmMain.Free; 8 l+ \8 l5 V7 H M8 G. M6 O
end; % m2 d |& I! h! W7 e ( y8 ?- C8 F% V/ e; k8 S1 F Hend. 7 e5 B) P: o* {0 d b( I, a- J( R' y7 a1 W4 B& F
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主窗口单元如下: 2 v2 T7 ~: J+ n d# N2 e& g
$ a/ f5 v7 a \4 p# xunit Unit_FrmMain; 9 H' }8 l3 j6 W, E: i( f* L 7 b8 d& n& n! b. i) P8 j/ k9 O3 d, ointerface - O3 s' J7 D! C
' O0 I' J# C4 w$ c. O kuses & u3 j! x$ z6 _- G% s! FWindows, Messages, SysUtils, Variants, Classes, ShellApi, Graphics, Controls, Forms, " ?5 \( Z8 k7 F/ cDialogs, ExtCtrls, StdCtrls; / U* M3 s1 B y% J; t: W3 t4 C
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const * U2 J) N& X3 TWM_TrayIcon = WM_USER + 1234; 6 K( l/ V! F' _. F1 L
type * }# i3 X2 c" U6 O/ C, F* D" K) e
TFrmMain = class(TForm) 3 X. b* h0 T' t5 dTimer1: TTimer; 3 d* L; n: T4 ] HButton1: TButton; 0 h' `4 n8 Y& F4 Q
procedure FormCreate(Sender: TObject); / o0 f% q, K- U9 H8 ^
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean); * @1 U w" r+ d$ D- X. q
procedure FormDestroy(Sender: TObject); + U6 a. d5 X/ }( g( n0 T$ xprocedure Timer1Timer(Sender: TObject); ( l4 ~5 Q% l% V8 ^5 Eprocedure Button1Click(Sender: TObject); 2 U% |9 d2 w# b" _$ r- tprivate $ w; O! G: m& X* N/ O* b, a{ Private declarations } 5 \4 b* i3 P& d+ u5 t
IconData: TNotifyIconData; $ j& V- X6 Z+ ]' _- ~( k
procedure AddIconToTray; ! Q. { i- L/ z% g- }1 l% @+ Y, [
procedure DelIconFromTray; % O* A3 a0 D' [, x6 Gprocedure TrayIconMessage(var Msg: TMessage); message WM_TrayIcon; ! w+ a) d" P; x6 N! R! X. ] m
procedure SysButtonMsg(var Msg: TMessage); message WM_SYSCOMMAND; ' w" |$ U) I1 Y8 c2 w: O
public # I) f. l0 r C! g
{ Public declarations } ! f/ q7 o7 C1 [- S" n: J: q6 @end; : z4 f3 p2 F: K( s9 Y& ?. G; O" Y / k( D" c& g7 R; I: x' Z7 Fvar / _$ g9 r& J) r
FrmMain: TFrmMain; 4 p, h9 @( f2 F; k2 Y, S5 V1 Q
gbCanClose: Boolean; . R. d' W5 F/ o5 a8 P3 \
implementation ' W ^& R7 B* o/ U. q; M' o4 Y2 Z( O6 [4 _2 F& o
{$R *.dfm} 1 ]' k' g8 ^0 Q! m+ F/ J8 `4 W+ s. ]7 j& @! U
procedure TFrmMain.FormCreate(Sender: TObject); % {. B, c; l. }8 _4 o
begin # L/ O/ T. }; A# NFormStyle := fsStayOnTop; , f' E, u+ W0 x& q9 F& Q0 z
SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW); & h7 S5 w) y7 x! f- W8 {2 vgbCanClose := False; , f/ F: U7 x" {0 `; y) @9 a4 QTimer1.Interval := 1000; ) A8 Q9 g$ T$ q% j& P/ y
Timer1.Enabled := True; 3 ^9 u9 @$ V2 O; o1 j+ yend; H$ B' x3 \" V$ B8 s- E , ` E/ x$ V8 W1 `procedure TFrmMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean); 4 F( x3 p7 W3 _begin * C! K- t! k/ nCanClose := gbCanClose; ) F) g) [1 E4 d& K( L
if not CanClose then ( A K! k6 R! {% K4 ]! r+ z# }
begin " t6 `* K5 c, \+ `3 P6 r6 M
Hide; , Y5 k- b/ V9 [1 Z; Gend; 1 Y$ `; p8 ]1 h2 Kend; 5 t$ m# y/ B0 @ E2 q. K* ?: x3 t3 c6 ~5 N4 }) K
procedure TFrmMain.FormDestroy(Sender: TObject); + m1 |: b7 u7 l/ H: z& q
begin + }6 ^; U) k3 Z+ [* q9 {& h
Timer1.Enabled := False; 7 T- ^0 P, Y- ^: t, S
DelIconFromTray; 8 s5 k" h" Q1 P% Z$ j( K& iend; ' G- D6 {% j9 z1 `9 N4 {# c" |- k& Y% b# h5 t. Y( V9 M# O
procedure TFrmMain.AddIconToTray; ! J! Y7 P. g9 t+ W& U# dbegin - ~ x4 Z) Y/ Z( H( |
ZeroMemory(@IconData, SizeOf(TNotifyIconData)); . v5 f/ U: w" Q0 k% O+ s0 E8 s
IconData.cbSize := SizeOf(TNotifyIconData); / B( v) W9 B$ R+ i
IconData.Wnd := Handle; ( g- T) C+ D! [- s
IconData.uID := 1; - F" M9 }& Y% Z- D2 s$ RIconData.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP; - P& a/ Y9 y& n, VIconData.uCallbackMessage := WM_TrayIcon; V. P5 ~, K2 h' r. Q* uIconData.hIcon := Application.Icon.Handle; ! i9 G8 N. B8 Z2 P4 q
IconData.szTip := 'Delphi服务演示程序'; 8 Y! E- f+ g# _! s
Shell_NotifyIcon(NIM_ADD, @IconData); g/ y9 \' o) U# b" s$ e+ R: }1 [- j5 \
end; 3 p) d- u$ A/ l' N0 y3 `8 q5 H) N: L$ D* k/ V/ e" I" _
procedure TFrmMain.DelIconFromTray; * W; r1 T" T0 e$ K% V2 K7 n! H
begin % [3 B& u. s$ s! s+ {) k9 G1 o3 d
Shell_NotifyIcon(NIM_DELETE, @IconData); 1 b, y5 z0 e5 F9 l6 X" w {end; 0 Q( e9 g2 D5 V: ?' L7 H 0 y7 F" q: z& e! W1 b3 g) Rprocedure TFrmMain.SysButtonMsg(var Msg: TMessage); * ]3 r; |3 w+ a, B* cbegin ; f& Y" o$ G$ W
if (Msg.wParam = SC_CLOSE) or 6 v. p8 e+ M) X+ y. k/ B* L
(Msg.wParam = SC_MINIMIZE) then Hide 8 b6 {3 l8 k; o. eelse inherited; // 执行默认动作 + U, E; @4 P: X1 [* q5 [' _1 w0 Xend; , S& {4 Q3 f) g/ h: T* G& S& Z