Solved

about system

Posted on 1998-10-26
1
198 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

Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
unable to delete all specified values regedit 38 401
Doc'in system (example?) BA 7 109
sum67 challenge 35 97
Problem to event 3 95
Introduction: Hints for the grid button.  Nested classes, templated collections.  Squash that darned bug! Continuing from the sixth article about sudoku.   Open the project in visual studio. First we will finish with the SUD_SETVALUE messa…
Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
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.
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

776 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