得到电脑的信息-优快云博客

这里有几个函数，用来得到机器的信息：

1、得到注册表键值：这里判断norton的病毒库版本
void CInfoshowDlg::GetNortonVersion()
{
HKEY hkey;
LONG result = RegOpenKey(HKEY_LOCAL_MACHINE,"SOFTWARE//INTEL//LANDesk//VirusProtect6//CurrentVersion",&hkey);

if (result != 0)
{
  AfxMessageBox("无法打开注册表键值！");
  return ;
}
DWORD datalen,type;
BYTE data[80];
result = RegQueryValueEx(hkey,"PatternFileDate",NULL,&type,data,&datalen);
if (result != 0)
{
  AfxMessageBox("无法读取相应值!");
  RegCloseKey(hkey);
  return ;
}

char tmp;
int years,months,days;

tmp = data[0];
years = tmp%10;

tmp = data[1];
months = tmp + 1;

tmp = data[2];
days = tmp;

m_norton_version.Format("200%d.%d.%d",years,months,days);
RegCloseKey(hkey);
}
2、硬盘空间：
CString CInfoshowDlg::GetDisk(char *disk)
{
_ULARGE_INTEGER result_freespace,result_totalspace,result_g;
CString disk_space;
int error = 0;
int free_space,total_space;
int free_percent;

/* Get free space */
GetDiskFreeSpaceEx(disk,&result_freespace,&result_totalspace,&result_g);
if (error != 0)
{
CString t;
t.Format("GetDiskFreeSpace() error=%d",error);
AfxMessageBox(t);
}

free_space = result_freespace.QuadPart/1024/1024;
total_space = result_totalspace.QuadPart/1024/1024;
free_percent = (float)free_space/total_space*100;
disk_space.Format("%dM/ %dM (%d%%)",free_space,total_space,free_percent);

return disk_space;
}

3、取得机器名，ip地址：
void CInfoshowDlg::GetHostName()
{
WORD wVersionRequested;
WSADATA wsaData;
char name[255];
CString ip;
PHOSTENT hostinfo;
wVersionRequested = MAKEWORD(2,0);
if(WSAStartup(wVersionRequested,&wsaData) == 0)
{
if(gethostname(name,sizeof(name)) == 0)
{

  if((hostinfo = gethostbyname(name))!=NULL)
   {
   ip = inet_ntoa(*(struct in_addr*)*hostinfo->h_addr_list);
    }
   }

WSACleanup();
}
m_ipaddr = ip;
m_hostname.Format("%s",name);
}

4、网络状态：建立一个socket，ping自己。

int CInfoshowDlg::GetNetState()
{
sockaddr_in pingSocket;
int confd,error;

m_net_state.Format("OFF");
CreateThread(NULL,0,CreatePingPort,NULL,0,0);
if(strcmp(m_ipaddr,"127.0.0.1") == 0)
{
  UpdateData(FALSE);
  return -1;
}
    memset(&pingSocket, 0, sizeof(pingSocket));
    pingSocket.sin_family      = AF_INET;
pingSocket.sin_addr.s_addr = inet_addr(m_ipaddr);
    pingSocket.sin_port        = htons(ping_port);

confd = socket(AF_INET, SOCK_STREAM, 0);
error = connect(confd,(struct sockaddr *)&pingSocket,sizeof(sockaddr_in));
error = send(confd,"!",1,0);
if(error == 0)
{
  /*
   * The net is off,but we must send a char to thread that we created
   */
  pingSocket.sin_addr.s_addr = inet_addr("127.0.0.1");
  connect(confd,(struct sockaddr *)&pingSocket,sizeof(sockaddr_in));
  send(confd,"!",1,0);
  UpdateData(FALSE);
  return -1;
}
m_net_state.Format("ON");
UpdateData(FALSE);
return 0;
}