If you download the API Development Kit you can find every necessary file to build a General API based add-on.

The subfolder named Examples collects a rich set of example projects.

Examples

The subfolder named Support collects all the necessary libraries and header files. It includes also tools to create a new AddOn.

• Header Files
• Libraries
  
• Modules
  
• Frameworks (only on macOS: this contains the binary frameworks of the modules)
• Extensions
  
• Tools

The subfolder named Documentation contains the full documentation of the API and related software. It can be read either in HTML or CHM/docset format (depends on the platform).