Interfaces Module

The Interfaces/ directory contains the public API definitions for the system. These files define the structures, constants, and function prototypes used by applications and system components.

Languages Supported

The interfaces are provided for multiple languages, reflecting the development environment of the era:

• C (CIncludes/): Headers for C programming.
• Pascal (PInterfaces/): Interfaces for Pascal (the primary language of the original Mac OS).
• Assembly (AIncludes/): Equate files (.a) for assembly language development.

Organization

CIncludes/ & PInterfaces/

Contains high-level definitions for Toolbox managers.

• Windows.h / Windows.p: Window Manager.
• Menus.h / Menus.p: Menu Manager.
• Files.h / Files.p: File Manager.
• Memory.h / Memory.p: Memory Manager.

AIncludes/

Contains low-level offsets and bit definitions.

• SysEqu.a: System global variables.
• Traps.a: Trap numbers.

Usage

These files are essential for compiling any code that interacts with the System 7.1 API. The build system includes these directories in the search path (e.g., -i {AIncludes}).