A C++ Wrapper and Extension of Windows FileSystemObject Objects


Windows comes with a FileSystemObject system. It provides easy-to-use folder/file manipulation interfaces. Unfortunately, only scripting language-based developers can take advantage of it. CFileSystemObject is a C++ implementation of Windows FileSystemObject. It wraps standard interfaces (method/properties) in C++ classes. C++ developers easily can use it to interact with Windows folders and files without dealing with Win32 APIs (and their complicated parameters). In addition, I extend the final C++ class further to support binary file operations. With this, most developers are able to finish 90% of their folder/file-related coding work by using these C++ classes.

FileSystemObject Classes at a Glance

Class Name Wrapper to Interface Description
CFsoFileSystemObject FileSystemObject Gets other object interface
CFsoDrive Drive Manipulates drives (for example, c:\)
CFsoFolder Folder Manipulates folders (for example, c:\windows)
CFsoFile File Manipulates files (for example, c:\windows\xxx.dll)
CFsoTextStream TextStream Reads/Writes/Appends text files (supports both ASCII and Unicode)
CFsoBinaryStream   Interface extension to support binary file operation; reads/writes/appends binary files

How to Use Them

You need to get an instance of FileSystemObject:

CFileSystemObject * fso = new CFileSystemObject();

Once you get the instance, you can use it to access other interfaces and play with methods/properties that are exposed.

  1. Drive
  2. CFsoDrive * driveC = fso->GetDrive(L"c:\\");
  3. Folder
  4. CFsoFolder * folderWinRoot = fso->GetFolder(L"c:\\windows");
  5. File
  6. CFsoFile * fileText = fso->GetFile(L"c:\\windows\\abc.txt");
    CFsoFile * fileBinary = fso->GetFile(L"c:\\windows\\abc.bin");
  7. Open a text stream (using the text file object gotten at Step 3)
  8. CFsoTextStream * textStream =
       fileText->OpenAsTextStream(1/*IO Mode*/,
                                  0/*Text Format*/);
  9. Open a binary stream (using the binary file object gotten at Step 3)
  10. CFsoBinaryStream * binaryStream =
       fileBinary->OpenAsBinaryStream(1/*IO Mode*/);
  11. Enumerate all sub-folders under a specified folder (using the folder object gotten at Step 2)
  12. CFsoList<CFsoFolder> * subFolders = folderWinRoot->GetSubFolders();
    for (int i = 0; i < subFolders->GetCount(); i++)
       CFsoFolder * folder = subFolders->Get(i);
    // Clear all folder objects in the list and release memory
    // occupied
  13. Enumerate all files under a specified folder (using the folder object gotten at Step 2)
  14. CFsoList<CFsoFile> * files =
    for (int i = 0; i < files->GetCount(); i++)
       CFsoFile * file = files->Get(i);
    // Clear all file objects in the list and release memory
    // occupied


To help you understand those classes, methods, enums and typedefs, I write concrete comments in the source code and generate HTML documentation by using Doxygen. You can easily find out the information you need to play with these classes. When you unzip the source code file, you can find one .CPP, one .H ,plus one folder named HTML. Please enter the HTML folder and double-click indext.html to open the source code documentation. Enjoy!

Please make sure the file path of scrrun.dll is correct according to your Windows system settings. On my PC, the default Windows root path is C:\Winnt. It may not be the same for your system. If your system root path is C:\Windows, please change line #25 in CFileSystemObject.h accordingly. Otherwise, a compiler error will occur.

About the Author

Skeeter Xu

Software Architect from Intel R&D Center, Shanghai China. Before that, I was working in Singapore for 8 years focusing on all kinds of Windows platform development - from firmware, device drive to application level.



  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Is your compliance strategy relying on disconnected processes and tools that leave your organization at risk? Do your security and operations teams run into conflicts--leading to a gap between audit and remediation? Now you can make even the most complex and dynamic IT infrastructure fully secure and compliant. Read this eBook and learn how to: Improve process and close the SecOps gap Quickly detect, audit and remediate breaches Create a more agile environment to comply to regulatory mandates Better …

  • This white paper focuses on how to protect and restore Microsoft Exchange data with Veeam. It briefly covers Microsoft Exchange 2013 and Veeam Backup & Replication v8 architecture, after which it focuses on how to handle proper backup, replication and recovery of Exchange in vSphere and Hyper-V environments.

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date