Why it is important to study detailed code or functions of windows / visual programming, rather there are many professional tools like Visual Studio etc. available that do the same in mush less time as compared to write a detailed code.
Advantages of using professional tools like Visual Studio etc.
- Good debuggers
- Editing running code(when available)
- Advanced code refactoring capabilities
- Plugins for source control etc.
- Automatic error checking, auto-completion etc.