Is it possible to start a program (exe) before user logeed on the machine (windows) ?

#include <windows.h>
#include <tchar.h>
#include <iostream>
#include <fstream>
using namespace std;
#define ACCESS_FLAG KEY_WOW64_64KEY
TCHAR* serviceName = TEXT("Hello");
SERVICE_STATUS serviceStatus;
SERVICE_STATUS_HANDLE serviceStatusHandle = 0;
HANDLE stopServiceEvent = 0;
TCHAR InstallPath[MAX_PATH] = {0};
ofstream logfile;

void WINAPI ServiceControlHandler( DWORD controlCode )
{
	switch ( controlCode )
	{
		case SERVICE_CONTROL_INTERROGATE:
			break;

		case SERVICE_CONTROL_SHUTDOWN:
		case SERVICE_CONTROL_STOP:
			serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
			SetServiceStatus( serviceStatusHandle, &serviceStatus );

			SetEvent( stopServiceEvent );
			return;

		case SERVICE_CONTROL_PAUSE:
			break;

		case SERVICE_CONTROL_CONTINUE:
			break;

		default:
			if ( controlCode >= 128 && controlCode <= 255 )
				// user defined control code
				break;
			else
				// unrecognised control code
				break;
	}

	SetServiceStatus( serviceStatusHandle, &serviceStatus );
}

void WINAPI ServiceMain( DWORD /*argc*/, TCHAR* /*argv*/[] )
{
	// initialise service status
	serviceStatus.dwServiceType = SERVICE_WIN32;
	serviceStatus.dwCurrentState = SERVICE_STOPPED;
	serviceStatus.dwControlsAccepted = 0;
	serviceStatus.dwWin32ExitCode = NO_ERROR;
	serviceStatus.dwServiceSpecificExitCode = NO_ERROR;
	serviceStatus.dwCheckPoint = 0;
	serviceStatus.dwWaitHint = 0;

	serviceStatusHandle = RegisterServiceCtrlHandler( serviceName, ServiceControlHandler );

	if ( serviceStatusHandle )
	{
		// service is starting
		serviceStatus.dwCurrentState = SERVICE_START_PENDING;
		SetServiceStatus( serviceStatusHandle, &serviceStatus );

		// do initialisation here
		stopServiceEvent = CreateEvent( 0, FALSE, FALSE, 0 );

		// running
		serviceStatus.dwControlsAccepted |= (SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
		serviceStatus.dwCurrentState = SERVICE_RUNNING;
		SetServiceStatus( serviceStatusHandle, &serviceStatus );
		bool rc = false;
		HANDLE hUserToken = NULL;
		do
		{
			if (!ImpersonateLoggedOnUser(hUserToken))
			{
				DWORD rc = GetLastError();
				CloseHandle(hUserToken);
				logfile << "Error: ImpersonateLoggedOnUser() fail with error code "<< rc << endl;
				break;
			}

			STARTUPINFO             si;
			PROCESS_INFORMATION pi;

			memset(&si, 0, sizeof(si));
			memset(&pi, 0, sizeof(pi));

			si.cb = sizeof(si);

			rc = CreateProcessAsUser(hUserToken,                // user token
									0,                           // app name
									InstallPath,                   // command line
									0,                           // process attributes
									0,                           // thread attributes
									FALSE,                       // don't inherit handles
									DETACHED_PROCESS,            // flags
									0,                           // environment block
									0,                           // current dir
									&si,                         // startup info
									&pi);                        // process info gets put here


			if (!rc)
			{
				DWORD rc = GetLastError();
				RevertToSelf();
				CloseHandle(hUserToken);
				logfile << "Error: CreateProcessAsUser() fail" << endl;
				break;			
			}

			RevertToSelf();
			CloseHandle(hUserToken);
			Sleep(2000);
			rc = false;
			hUserToken = NULL;
		}
		while ( WaitForSingleObject( stopServiceEvent, 5000 ) == WAIT_TIMEOUT );

		// service was stopped
		serviceStatus.dwCurrentState = SERVICE_STOP_PENDING;
		SetServiceStatus( serviceStatusHandle, &serviceStatus );

		// do cleanup here
		CloseHandle( stopServiceEvent );
		stopServiceEvent = 0;

		// service is now stopped
		serviceStatus.dwControlsAccepted &= ~(SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN);
		serviceStatus.dwCurrentState = SERVICE_STOPPED;
		SetServiceStatus( serviceStatusHandle, &serviceStatus );
	}
}

void RunService()
{
	SERVICE_TABLE_ENTRY serviceTable[] =
	{
		{ serviceName, ServiceMain },
		{ 0, 0 }
	};

	StartServiceCtrlDispatcher( serviceTable );
}

void InstallService()
{
	//First copy that exe file in program files...
	logfile <<"Installing Service" << endl;
	SC_HANDLE serviceControlManager = OpenSCManager( 0, 0, SC_MANAGER_CREATE_SERVICE );

	if ( serviceControlManager )
	{
		TCHAR path[ _MAX_PATH + 1 ], InstallPath[ _MAX_PATH + 1 ] = {0};
		//lstrcpy(InstallPath, L"C:\\Program Files\\WinService\\WinServiceTest.exe");
		
		if ( GetModuleFileName( 0, path, sizeof(path)/sizeof(path[0]) ) > 0 )
		{
			//if( 0 == CopyFile(path, InstallPath, FALSE))
			//{
			//	//Fail
			//	MessageBox(NULL, L"Error", L"Please run as Admin", MB_OK);
			//	return ;
			//}

			SC_HANDLE service = CreateService( serviceControlManager,
							serviceName, serviceName,
							SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS,
							SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, path,
							0, 0, 0, 0, 0 );
			if ( service )
				CloseServiceHandle( service );
		}

		CloseServiceHandle( serviceControlManager );
	}
}

void UninstallService()
{
	SC_HANDLE serviceControlManager = OpenSCManager( 0, 0, SC_MANAGER_CONNECT );

	if ( serviceControlManager )
	{
		SC_HANDLE service = OpenService( serviceControlManager,
			serviceName, SERVICE_QUERY_STATUS | DELETE );
		if ( service )
		{
			SERVICE_STATUS serviceStatus;
			if ( QueryServiceStatus( service, &serviceStatus ) )
			{
				if ( serviceStatus.dwCurrentState == SERVICE_STOPPED )
					DeleteService( service );
			}

			CloseServiceHandle( service );
		}

		CloseServiceHandle( serviceControlManager );
	}
}

//int _tmain( int argc, TCHAR* argv[] )
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
{
	logfile.open ("C:\\log.txt");
	ExpandEnvironmentStrings(L"%APPDATA%", InstallPath, MAX_PATH);
	lstrcat(InstallPath, L"\\Test\\");
	//CreateDirectory(InstallPath, NULL);
	lstrcat(InstallPath, L"message.exe");
	logfile << "Install PAth: " << InstallPath;
	HKEY hKey = NULL;
	DWORD dwRegOpenErr = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
				TEXT("SYSTEM\\CurrentControlSet\\services\\Hello"),
				(DWORD)NULL,
				ACCESS_FLAG | KEY_READ,
				&hKey);
	
	if(ERROR_SUCCESS == dwRegOpenErr)
	{
		RunService();
	}
	else
	{
		//MessageBox(NULL, L"Insatalling", L"installing", MB_OK);
		DWORD ff = GetLastError();
		InstallService();
		RunService();
	}
	//if(0 == strcmp("install", lpCmdLine))
	//	InstallService();

	////if(0 == strcmp("uninstall", lpCmdLine))
	////	UninstallService();

	//if(0 == strcmp("", lpCmdLine))
	//RunService();
	logfile.close();
	return 0;
}