Windows服务的问题

trainbox 2010-02-15 01:23:31

写了一个windows服务程序，服务里有选择和桌面交互，创建了一个窗口显示在桌面上，用来控制服务。

但是窗口的菜单只能显示第一级的菜单，弹出式或者下拉菜单都无法显示（闪了一下，很快）

能解决不？

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trainbox 2010-03-16

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已找到问题所在，结贴

SQLDebug_Fan 2010-03-03

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采用下面的方法，可以实现一个两栖系统服务（既系统服务和桌面程序的两种模式）
工程代码：
program FleetReportSvr;

uses
SvcMgr,
Forms,
SysUtils,
Windows,
SvrMain in 'SvrMain.pas' {FleetReportService: TService},
AppMain in 'AppMain.pas' {FmFleetReport}；

{$R *.RES}

const
CSMutexName = 'Global\Services_Application_Mutex';
var
OneInstanceMutex: THandle;
SecMem: SECURITY_ATTRIBUTES;
aSD: SECURITY_DESCRIPTOR;
begin
InitializeSecurityDescriptor(@aSD, SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(@aSD, True, nil, False);
SecMem.nLength := SizeOf(SECURITY_ATTRIBUTES);
SecMem.lpSecurityDescriptor := @aSD;
SecMem.bInheritHandle := False;
OneInstanceMutex := CreateMutex(@SecMem, False, CSMutexName);
if (GetLastError = ERROR_ALREADY_EXISTS)then
begin
DlgError('Error, Program or service already running!');
Exit;
end;
if FindCmdLineSwitch('svc', True) or
FindCmdLineSwitch('install', True) or
FindCmdLineSwitch('uninstall', True) then
begin
SvcMgr.Application.Initialize;
SvcMgr.Application.CreateForm(TSvSvrMain, SvSvrMain);
SvcMgr.Application.Run;
end
else
begin
Forms.Application.Initialize;
Forms.Application.CreateForm(TFmFmMain, FmMain);
Forms.Application.Run;
end;
end.
然后在SvrMain注册服务：
unit SvrMain;

interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, SvcMgr, Dialogs, MsgCenter;

type
TSvSvrMain = class(TService)
procedure ServiceStart(Sender: TService; var Started: Boolean);
procedure ServiceStop(Sender: TService; var Stopped: Boolean);
procedure ServiceBeforeInstall(Sender: TService);
procedure ServiceAfterInstall(Sender: TService);
private
{ Private declarations }
public
function GetServiceController: TServiceController; override;
{ Public declarations }
end;

var
SvSvrMain: TSvSvrMain;

implementation

const
CSRegServiceURL = 'SYSTEM\CurrentControlSet\Services\';
CSRegDescription = 'Description';
CSRegImagePath = 'ImagePath';
CSServiceDescription = 'Services Sample.';

{$R *.DFM}

procedure ServiceController(CtrlCode: DWord); stdcall;
begin
SvSvrMain.Controller(CtrlCode);
end;

function TSvSvrMain.GetServiceController: TServiceController;
begin
Result := ServiceController;
end;

procedure TSvSvrMain.ServiceStart(Sender: TService;
var Started: Boolean);
begin
Started := dmPublic.Start;
end;

procedure TSvSvrMain.ServiceStop(Sender: TService;
var Stopped: Boolean);
begin
Stopped := dmPublic.Stop;
end;

procedure TSvSvrMain.ServiceBeforeInstall(Sender: TService);
begin
RegValueDelete(HKEY_LOCAL_MACHINE, CSRegServiceURL + Name, CSRegDescription);
end;

procedure TSvSvrMain.ServiceAfterInstall(Sender: TService);
begin
RegWriteString(HKEY_LOCAL_MACHINE, CSRegServiceURL + Name, CSRegDescription,
CSServiceDescription);
RegWriteString(HKEY_LOCAL_MACHINE, CSRegServiceURL + Name, CSRegImagePath,
ParamStr(0) + ' -svc');
end;

end.
这样，双击程序，则以普通程序方式运行，若用服务管理器来运行，则作为服务运行。
例如公共模块：
dmPublic，提供Start,Stop方法。

在主窗体中，调用dmPublic.Start，dmPublic.Stop方法。
同样在Service中，调用dmPublic.Start，dmPublic.Stop方法。