xcb-studies/notes.md

• A Display has Screens
• A Screen has Monitors & Windows
• The root Screen is accessed by traversing to the head of the list of screens using an interator.
• The root screen's root window is used as the parameter for 'get_screen_resources'.
• The screen_resources object is contains 'screen_resources_crtcs', which you again get via an iterator. These are cookies.

CXX Opts looks like a really useful version of GetOpts that will do what you want: https://github.com/jarro2783/cxxopts

Git

• git submodule add <url> is how you add a submodule to your project. It creates a new folder for the submodule and it creates an entry in the $(git-root)/.gitmodule file that explains where the submodule should go and how to reference it.