[C++] อยากทราบการ Get computer id แล้วส่งไปที่ sql server

#include "machine_id.h"   

#define WIN32_LEAN_AND_MEAN        
#include <windows.h>      
#include <intrin.h>       
#include <iphlpapi.h>     
#ifndef _MSC_VER
#include <cpuid.h>
#else
#include <intrin.h>
#endif

// we just need this for purposes of unique machine id. So any one or two mac's is       
// fine. 
u16 hashMacAddress( PIP_ADAPTER_INFO info )          
{        
   u16 hash = 0;          
   for ( u32 i = 0; i < info->AddressLength; i++ )   
   {     
      hash += ( info->Address << (( i & 1 ) * 8 ));        
   }     
   return hash;           
}        

void getMacHash( u16& mac1, u16& mac2 )              
{        
   IP_ADAPTER_INFO AdapterInfo[32];                  
   DWORD dwBufLen = sizeof( AdapterInfo );           

   DWORD dwStatus = GetAdaptersInfo( AdapterInfo, &dwBufLen );                  
   if ( dwStatus != ERROR_SUCCESS )                  
      return; // no adapters.      

   PIP_ADAPTER_INFO pAdapterInfo = AdapterInfo;      
   mac1 = hashMacAddress( pAdapterInfo );            
   if ( pAdapterInfo->Next )       
      mac2 = hashMacAddress( pAdapterInfo->Next );   

   // sort the mac addresses. We don't want to invalidate     
   // both macs if they just change order.           
   if ( mac1 > mac2 )     
   {     
      u16 tmp = mac2;     
      mac2 = mac1;        
      mac1 = tmp;         
   }     
}        

u16 getVolumeHash()       
{        
   DWORD serialNum = 0;   

   // Determine if this volume uses an NTFS file system.      
   GetVolumeInformation( "c:\\", NULL, 0, &serialNum, NULL, NULL, NULL, 0 );    
   u16 hash = (u16)(( serialNum + ( serialNum >> 16 )) & 0xFFFF );              

   return hash;           
}        

u16 getCpuHash()          
{        
   int cpuinfo[4] = { 0, 0, 0, 0 };                  
   __cpuid( cpuinfo, 0 );          
   u16 hash = 0;          
   u16* ptr = (u16*)(&cpuinfo[0]); 
   for ( u32 i = 0; i < 8; i++ )   
      hash += ptr[i];     

   return hash;           
}        

const char* getMachineName()       
{        
   static char computerName[1024]; 
   DWORD size = 1024;     
   GetComputerName( computerName, &size );           
   return &(computerName[0]);      
}