Solved

about system

Posted on 1998-10-26
1
207 Views
Last Modified: 2013-11-20
now i use visual c++ 5. I would like to know how i get information system
 such as ( how many drive in computer , name of computer,...).
i will use that information for my application.
please advise me
thank you
0
Comment
Question by:eakkung
1 Comment
 
LVL 3

Accepted Solution

by:
stefanr earned 100 total points
ID: 1323885
SYSTEM_INFO SystemInfo = { 0 };
::GetSystemInfo(&SystemInfo);

//-------x-------

MEMORYSTATUS MemoryStatus = { 0 };
MemoryStatus.dwLength = sizeof(MEMORYSTATUS);
::GlobalMemoryStatus(&MemoryStatus);

//-------x-------

CString strComputerName;
::GetComputerName(strComputerName.GetBuffer(MAX_COMPUTERNAME_LENGTH+1), MAX_COMPUTERNAME_LENGTH+1);
strComputerName.ReleaseBuffer();

//-------x--------

struct PHYDRIVEINFO
{
   CString m_sDrive;
   DISK_GEOMETRY m_DiskGeometry;
   CByteArray m_arrDriveLayout;

   PHYDRIVEINFO() { ::ZeroMemory(&m_DiskGeometry, sizeof(DISK_GEOMETRY)); }
   PHYDRIVEINFO(PHYDRIVEINFO& obj) { ::ZeroMemory(&m_DiskGeometry, sizeof(DISK_GEOMETRY)); }
   PHYDRIVEINFO& operator=(PHYDRIVEINFO& obj) { return *this; }
   PHYDRIVEINFO& operator=(LPCTSTR lpszDrive) { m_sDrive = lpszDrive; return *this; }
};

CArray<PHYDRIVEINFO, LPCTSTR> arrPhysicalDrives;

const int MAXPHYDRIVE = 16;

const CString sFileNamePrefix = _T("\\\\.\\");
CString sFileName;
CString sFilePath;
HANDLE hFile = INVALID_HANDLE_VALUE;
for (int i = 0; i < MAXPHYDRIVE; i++)
{
   sFileName.Format(_T("PHYSICALDRIVE%d"), i);
   sFilePath = sFileNamePrefix + sFileName;
   hFile = ::CreateFile(sFilePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
   if (hFile != INVALID_HANDLE_VALUE)
   {
      int nIndex = arrPhysicalDrives.Add(sFileName);
      PHYDRIVEINFO& rPhyDriveInfo = arrPhysicalDrives.ElementAt(nIndex);
      DWORD dwBytesReturned = 0;
      ::DeviceIoControl(hFile, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &rPhyDriveInfo.m_DiskGeometry, sizeof(DISK_GEOMETRY), &dwBytesReturned, NULL);

      int cPartns = 4;
      while (TRUE)
      {
         rPhyDriveInfo.arrDriveLayout.SetSize(sizeof(DRIVE_LAYOUT_INFORMATION) + cPartns*sizeof(PARTITION_INFORMATION));
         ::ZeroMemory(rPhyDriveInfo.arrDriveLayout.GetData(), rPhyDriveInfo.arrDriveLayout.GetSize());
         if (::DeviceIoControl(hFile, IOCTL_DISK_GET_DRIVE_LAYOUT, NULL, 0, rPhyDriveInfo.arrDriveLayout.GetData(), rPhyDriveInfo.arrDriveLayout.GetSize(), &dwBytesReturned, NULL))
            break;
         else if (::GetLastError() != ERROR_INSUFFICIENT_BUFFER)
         {
            rPhyDriveInfo.arrDriveLayout.RemoveAll();
            break;
         }
         cPartns += 4;
      }

      ::CloseHandle(hFile);
   }
}

//-------x--------

struct LOGDRIVEINFO
{
   BOOL m_bInfoValid;
   CString m_sDrive;
   CString m_sVolumeName;
   DWORD m_dwVolumeSerialNumber;
   DWORD m_dwMaxNameLength;
   DWORD m_dwFileSystemFlags;
   CString m_sFileSystemName;
   UINT m_nDriveType;
   unsigned long m_nSectorsPerCluster;
   unsigned long m_nBytesPerSector;
   unsigned long m_nFreeClusters;
   unsigned long m_nClusters;

   LOGDRIVEINFO()
   {
      m_bInfoValid = FALSE;
      m_dwVolumeSerialNumber = 0;
      m_dwMaxNameLength = 0;
      m_dwFileSystemFlags = 0;
      m_nDriveType = 0;
      m_nSectorsPerCluster = 0;
      m_nBytesPerSector = 0;
      m_nFreeClusters = 0;
      m_nClusters = 0;
   }
   LOGDRIVEINFO(LOGDRIVEINFO& obj)
   {
      m_bInfoValid = FALSE;
      m_dwVolumeSerialNumber = 0;
      m_dwMaxNameLength = 0;
      m_dwFileSystemFlags = 0;
      m_nDriveType = 0;
      m_nSectorsPerCluster = 0;
      m_nBytesPerSector = 0;
      m_nFreeClusters = 0;
      m_nClusters = 0;
      operator=(obj);
   }
   LOGDRIVEINFO& operator=(LOGDRIVEINFO& obj) { m_sDrive = obj.m_sDrive; return *this; }
   LOGDRIVEINFO& operator=(LPCTSTR lpszDrive) { m_sDrive = lpszDrive; return *this; }
};

CArray<LOGDRIVEINFO, LPCTSTR> arrLogicalDrives;

const int LOGDRIVEBUFSIZE = 1024;
LPTSTR lpszzLogicalDrives = new TCHAR[LOGDRIVEBUFSIZE];
::ZeroMemory(lpszzLogicalDrives, LOGDRIVEBUFSIZE * sizeof(TCHAR));
::GetLogicalDriveStrings(LOGDRIVEBUFSIZE, lpszzLogicalDrives);

for (LPTSTR lpsz = lpszzLogicalDrives; *lpsz != 0; lpsz += ::_tcslen(lpsz)+1)
{
   TCHAR szLogicalDrive[4] = { 0 };
   ::_tcsnccpy(szLogicalDrive, lpsz, ::_tcslen(lpsz)-1);
   int nIndex = arrLogicalDrives.Add(szLogicalDrive);
   arrLogicalDrives[nIndex].m_bInfoValid = ::GetVolumeInformation(lpsz,
                             arrLogicalDrives[nIndex].m_sVolumeName.GetBuffer(_MAX_PATH), _MAX_PATH,
                             &arrLogicalDrives[nIndex].m_dwVolumeSerialNumber,
                             &arrLogicalDrives[nIndex].m_dwMaxNameLength,
                             &arrLogicalDrives[nIndex].m_dwFileSystemFlags,
                             arrLogicalDrives[nIndex].m_sFileSystemName.GetBuffer(_MAX_PATH), _MAX_PATH);
      arrLogicalDrives[nIndex].m_sVolumeName.ReleaseBuffer();
      arrLogicalDrives[nIndex].m_sFileSystemName.ReleaseBuffer();
   arrLogicalDrives[nIndex].m_nDriveType = ::GetDriveType(lpsz);
   if (arrLogicalDrives[nIndex].m_nDriveType == DRIVE_FIXED || arrLogicalDrives[nIndex].m_nDriveType == DRIVE_CDROM || arrLogicalDrives[nIndex].m_nDriveType == DRIVE_RAMDISK)
   {
      ::GetDiskFreeSpace(lpsz, &arrLogicalDrives[nIndex].m_nSectorsPerCluster, &arrLogicalDrives[nIndex].m_nBytesPerSector,
                                  &arrLogicalDrives[nIndex].m_nFreeClusters, &arrLogicalDrives[nIndex].m_nClusters);
   }
}
delete[] lpszzLogicalDrives;
lpszzLogicalDrives = NULL;

This is taken from an actual application, modified slightly for this informational purpose.

0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This is to be the first in a series of articles demonstrating the development of a complete windows based application using the MFC classes.  I’ll try to keep each article focused on one (or a couple) of the tasks that one may meet.   Introductio…
Introduction: Dynamic window placements and drawing on a form, simple usage of windows registry as a storage place for information. Continuing from the first article about sudoku.  There we have designed the application and put a lot of user int…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.

821 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question