Cool Dummy Volume Meter in "DOS Mode", a Fun Starter Project for anyone who wants to know a little more on VC++ IDE and Win32 Core APIs

The simple native DLL (made in VC++) uses Win32 Core API to capture the live audio signals from the default audio device (speaker or headphone). A little C# console EXE grabs the signal from the DLL and set the volume bars up/down in real time. It's fun to watch and easy to understand.