double rho_geo_altitude() 
{
#if defined(_WIN32_WCE)//&& !defined( OS_PLATFORM_MOTCE )
	if(winversion == 1)
	{
		CGPSController* gps = CGPSController::startInstance();
		return gps->GetAltitude();
	}
	return 0.0;
#else
	return 0.0;
#endif
}