The Windows File Management 8

 

 

 

Compressed File (Attributes) Program Example

 

The following program example demonstrates some of the compressed file functions.

Create a new empty Win32 console application project. Give a suitable project name and change the project location if needed.

Then, add the source file and give it a suitable name.

Next, add the following source code.

 

 

 

#include <windows.h>

#include <stdio.h>

 

int wmain(int argc, WCHAR *argv[])

{

      BOOL bRetVal;

      // Make sure the file is exist

      LPCTSTR lpFileName = L\\\\?\\C:\\WINDOWS\\ie7\\iexplore.chm;

      // LPCTSTR lpFileName = L\\\\?\\C:\\amad\\AddUserEncryptFile\\Debug\\testfilencrypt.doc;

      WIN32_FILE_ATTRIBUTE_DATA data;

      GET_FILEEX_INFO_LEVELS fInfoLevelId = GetFileExInfoStandard;

      SYSTEMTIME times, stLocal;

      DWORD dwFileSize = 0;

      // File  less than 4GB does not need this

      LPDWORD lpFileSizeHigh = NULL;

     

      bRetVal = GetFileAttributesEx(lpFileName, fInfoLevelId, &data);

 

      if(bRetVal == 0)

            wprintf(LGetFileAttributesEx() pretty damn failed, error %u\n, GetLastError());

      else

      {

            wprintf(LGetFileAttributesEx() is working!\n);

 

            // dwFileSize is the low-order DWORD of the actual number

            // of bytes of disk storage used to store the specified file

            dwFileSize = GetCompressedFileSize(lpFileName, lpFileSizeHigh);

 

            wprintf(LFile size is %u bytes\n, dwFileSize);

 

            FileTimeToSystemTime(&data.ftLastAccessTime, &times);

            SystemTimeToTzSpecificLocalTime(NULL, &times, &stLocal);

            wprintf(LLast accessed: %02d/%02d/%04d %02d:%02d:%02d\n, stLocal.wDay , stLocal.wMonth,

                  stLocal.wYear, stLocal.wHour, stLocal.wMinute, stLocal.wSecond);

           

            // The value is bitwise AND lol

            wprintf(Ldata.dwFileAttributes \'sum\' value is %u\n, data.dwFileAttributes);

 

            // Let play around with some of the attributes

            if(data.dwFileAttributes & FILE_ATTRIBUTE_COMPRESSED)

                  wprintf(LThe file is compressed!\n);

            else

                  wprintf(LThe file is not compressed!\n);

 

            if(data.dwFileAttributes & FILE_ATTRIBUTE_ARCHIVE)

                  wprintf(LThe file is an archive!\n);

            else

                  wprintf(LThe file is not an archive!\n);

           

            if(data.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)

                  wprintf(LThe file is hidden!\n);

            else

                  wprintf(LThe file is not hidden!\n);

           

            if(data.dwFileAttributes & FILE_ATTRIBUTE_READONLY)

                  wprintf(LThe file is read only!\n);

            else

                  wprintf(LThe file is not read only!\n);

           

            if(data.dwFileAttributes & FILE_ATTRIBUTE_ENCRYPTED)

                  wprintf(LThe file is an encrypted!\n);

            else

                  wprintf(LThe file is not encrypted!\n);

      }     

 

      // You may want to try other attributes:

      // data.ftCreationTime;

      // data.ftLastWriteTime;

      // data.nFileSizeHigh;

      // data.nFileSizeLow;

 

      // Close handle  

 

      return 0;

}

 

Build and run the project. The following screenshot is a sample output.

 

 

 

From the file property's page, we can see that the size on disk. Click the Advanced button for other information.

 

 

Well, the file is a compressed file (blue in colour). Both file size and compressed attribute should confirm our program output.

 

 

 

 

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