得到电脑的信息

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;
}

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