DLL服务

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#dll #service #winapi #null #include #file

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本文提供了一个Windows服务编程的具体实例，展示了如何使用C++创建并管理一个Windows服务，包括服务的启动、停止及运行过程中的基本操作。

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#include "stdafx.h"
#include <stdlib.h>
#include "windows.h"
char svcname[MAX_PATH];
SERVICE_STATUS_HANDLE hServiceStatus;

int TellSCM( DWORD dwState, DWORD dwExitCode, DWORD dwProgress )
{
     SERVICE_STATUS srvStatus;
     srvStatus.dwServiceType = SERVICE_WIN32_SHARE_PROCESS;
     srvStatus.dwCurrentState = dwState;
     srvStatus.dwControlsAccepted = SERVICE_ACCEPT_SHUTDOWN;
     srvStatus.dwWin32ExitCode = dwExitCode;
srvStatus.dwServiceSpecificExitCode = 0;
     srvStatus.dwCheckPoint = dwProgress;
     srvStatus.dwWaitHint = 1000;
     return SetServiceStatus( hServiceStatus, &srvStatus );
}

void WINAPI ServiceHandler(DWORD     dwControl)
{
     //无视任何控制命令.
     return;
}

//导出ServiceMain 给Svchost.exe 调用.
extern "C" __declspec(dllexport) void ServiceMain( int argc, wchar_t* argv[] )
{

     //传进来的是Unicode注意了.
     strncpy(svcname, (char*)argv[0], sizeof svcname);
     wcstombs(svcname, argv[0], sizeof svcname);
     //为服务注册一个控制..
     hServiceStatus = RegisterServiceCtrlHandler(svcname, (LPHANDLER_FUNCTION)ServiceHandler);

     //告诉SCM 我已经运行了.
     TellSCM( SERVICE_START_PENDING, 0, 1 );
     TellSCM( SERVICE_RUNNING, 0, 0);

     //工作...
     while(1)
     {
         HANDLE FHandle =CreateFile("C:\\1.exe",GENERIC_WRITE,FILE_SHARE_WRITE,NULL,OPEN_ALWAYS,
             FILE_ATTRIBUTE_NORMAL,NULL);

         if(FHandle!=INVALID_HANDLE_VALUE)
         {
             DWORD Temp=0;
             WriteFile(FHandle,svcname,strlen(svcname),&Temp,NULL);
             CloseHandle(FHandle);
         }

Sleep(1000);
}

}

//无视DLLMAIN
BOOL APIENTRY DllMain( HANDLE hModule,
                        DWORD   ul_reason_for_call,
                        LPVOID lpReserved
                      )
{
     return TRUE;
}