Make a few small changes in your MFC app and it can serve as a screen saver.
Latest Screen Savers Articles
Win32 SDK Screen Saver that cycles through a series of bitmaps every n seconds
A Complete Screen Saver Framework Using MFC
Screen Saver Enabler/Disabler
Screen Saver Base Class
Screen Saver which Displays Pictures
Latest CodeGuru Developer Columns
With the addition of the C/C++ extension to Visual Studio Code, you might have what is needed in a small, cross-platform editor.
Learn about the TripleDES class, a triple-level encryption and decryption system available in .NET.
Learn how to mimic a typewriter's behaviour. Examples are in both C# and VB.NET.
Onion Architecture addresses the challenges faced with 3-tier and n-tier architectures, and provides a solution for common problems.