系统服务创建含有界面的进程

系统服务在开机运行时，由于用户还没登陆，虽然可以用CreateProcess来创建进程但是界面进程的用户名是SYSTEM了，而且界面有可能显示不出来、托盘图标创建不成功。可以在界面里创建一具有名字的内核句柄，例如CreateEvent，服务程序一直OpenEvent它，若没打开成功就调用CreateProcessAsUser来创建这个界面进程，CreateProcessAsUser创建的进程一定是用户级别的

DWORD __stdcall INTER_GetExplorerToken( 

									   OUT PHANDLE	phExplorerToken )

{

	DWORD		dwStatus = ERROR_FILE_NOT_FOUND ;

	BOOL		bRet = FALSE ;

	HANDLE		hProcess = NULL ;

	HANDLE		hProcessSnap = NULL ;

	char		szExplorerPath[MAX_PATH] = { 0 } ;

	char		FileName[MAX_PATH] = { 0 } ;

	PROCESSENTRY32 pe32 = { 0 } ;

	__try

	{

		GetWindowsDirectory( szExplorerPath , MAX_PATH ) ;

		strcat( szExplorerPath , "//Explorer.EXE" ) ;  

		hProcessSnap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS , 0 ) ; 

		if( hProcessSnap == INVALID_HANDLE_VALUE )  

		{

			dwStatus = GetLastError() ;

			__leave ;

		}

		pe32.dwSize = sizeof( PROCESSENTRY32 ) ;

		if( !Process32First( hProcessSnap, &pe32 ))		

		{	

			dwStatus = GetLastError() ;

			__leave ;

		}

		do {	

			hProcess = OpenProcess(

				PROCESS_ALL_ACCESS ,

				FALSE ,

				pe32.th32ProcessID ) ;

			if( NULL != hProcess ) 		 

			{

				DWORD (__stdcall *GMFNE)(HANDLE hProcess,

					HMODULE hModule,

					LPTSTR lpFilename,

					DWORD nSize);

				HMODULE hPsapi=LoadLibrary("PSAPI");

				if ( ! hPsapi )

				{

					dwStatus = GetLastError() ;

					break ; 

				}

				GMFNE=(DWORD (__stdcall *) (HANDLE, HMODULE,LPTSTR,DWORD))GetProcAddress(hPsapi,"GetModuleFileNameExA");

				if ( GMFNE(hProcess , NULL , FileName , MAX_PATH) )

				{

					if( !strcmpi( FileName , szExplorerPath ))

					{								

						HANDLE	hToken ;

						if( OpenProcessToken( hProcess , TOKEN_ALL_ACCESS  , &hToken ))

						{								

							* phExplorerToken = hToken ;

							dwStatus = 0 ;

							//	CloseHandle( hToken ) ;

						}

						break ;

					}

				}

				/*

				if( GetModuleFileNameEx( 

					hProcess , NULL , FileName ,  MAX_PATH ))

				{          				

					if( !strcmpi( FileName , szExplorerPath ))

					{								

						HANDLE	hToken ;

						if( OpenProcessToken( hProcess , TOKEN_ALL_ACCESS  , &hToken ))

						{								

							* phExplorerToken = hToken ;

							dwStatus = 0 ;

							//	CloseHandle( hToken ) ;

						}

						break ;

					}

				} 

				*/

				CloseHandle ( hProcess ) ;	

				hProcess = NULL ;

			}

		} while( Process32Next( hProcessSnap, &pe32 )) ;

	}

	__finally

	{

		if( NULL != hProcess )

		{

			CloseHandle( hProcess ) ;

		}

		if( NULL != hProcessSnap )

		{

			CloseHandle ( hProcessSnap ) ;

		}

	}

	return dwStatus ;

}

DWORD __stdcall CreateInterfaceProcess()

{

	DWORD dwStatus = 0 ;

	CHAR		szModulePath[MAX_PATH] = { 0 } ;

	GetModuleFileName( NULL, szModulePath, MAX_PATH ) ;

	string strtemp(szModulePath) ;

	int iPos = strtemp.find_last_of("//");

	if ( iPos != string::npos )

	{

		HANDLE hPtoken = NULL ;

		INTER_GetExplorerToken( &hPtoken ) ;

		if ( hPtoken != NULL )

		{

			strtemp.replace( iPos ,strtemp.length()-iPos ,"//Interface.exe",strlen("//Interface.exe")) ;

			PROCESS_INFORMATION pi;

			STARTUPINFO si = { sizeof(STARTUPINFO),NULL,"",NULL,0,0,0,0,0,0,0,STARTF_USESHOWWINDOW,0,0,NULL,0,0,0};  

			si.wShowWindow = SW_HIDE;

			si.lpDesktop = NULL;

			ZeroMemory( &pi, sizeof(pi) );

			CreateProcessAsUser( hPtoken ,strtemp.c_str(),"minimize" ,

				NULL,NULL,FALSE , NORMAL_PRIORITY_CLASS ,NULL,NULL,&si,&pi ) ;

			Sleep(1000);

			CloseHandle( pi.hProcess );

			CloseHandle( pi.hThread );

		}

	}

	return dwStatus ;

}