[Overview][Types][Procedures and functions][Index] | Reference for unit 'ctypes' (#rtl)

# Reference for unit 'ctypes'

Common C type definitions

`uses`
`System,` |  | The system unit
`unixtype;` |  | Basic unix types

## Overview

The ctypes unit contains the definitions of commonly found C types. It can be used when interfaces to C libraries need to be defined. The types here are correct on all platforms, 32 or 64 bit.

The main advantage of using this file is to make sure that all C header import units use the same definitions for basic C types.

The h2pas program can include the ctypes unit automatically in the units it generates. The -C command-line switch can be used for this.

Documentation generated on: Feb 26 2014