Home
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Utilities & Libraries
C Library Reference

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
- Quickstart Guide
- System Architecture
  The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.
- OS Components & Operations
- Graphics
- Programming
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX OS system and developers who want to create a QNX OS resource manager free from vulnerabilities.
- Utilities & Libraries
  - C Library Reference
    - What's in a Function Description?
    - Manifests
    - Character Sets
    - A
    - B
    - C
    - D
    - E
    - F
    - G
    - H
    - I
    - J
    - K
    - L
    - M
    - N
    - O
    - P
    - Q
    - R
    - S
    - T
    - U
    - V
    - W
    - X
    - Y
    - Z
    - Full Safety Information
    - Glossary
  - Devctl and Ioctl Commands
  - JSON Library Reference
  - PAM Reference
  - QNX Helpers Developer's Guide
    These libraries provide QNX helpers, including helpers that assist with logging, string conversion, and number and type sizes.
  - SPI Framework Technote
  - Utilities Reference
  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
- Migrating to QNX OS 8.0
QNX Software in the Cloud
QNX Toolkit for Visual Studio Code
This User's Guide describes the QNX^® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX^® Operating System (OS) applications and systems.
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

About This Reference

QNX SDP8.0C Library ReferenceAPIDeveloper

The C Library Reference describes the C functions, data types, and protocols that are included as part of the QNX OS.


For information about:	See:
Specific entries	A ¦ B ¦ C ¦ D ¦ E ¦ F ¦ G ¦ H ¦ I ¦ J ¦ K ¦ L ¦ M ¦ N ¦ O ¦ P ¦ Q ¦ R ¦ S ¦ T ¦ U ¦ V ¦ W ¦ X ¦ Y ¦ Z
An overview of what you'll find in each entry	What's in a Function Description?
Descriptions of the manifests that you can use for compile-time changes or inspection	Manifests
Describes the character sets and C standard environment macros that QNX OS supports.	Character Sets
Complete safety information	Full Safety Information
Terms used in QNX OS documentation	Glossary

Note:

Some entries in this document refer to undefined behavior. In some cases, such behavior is caused by programming errors (e.g., using conflicting flags) and could cause harm (e.g., memory corruption, the failure of threads to run); in other cases, it consists of implementation details that we don't guarantee and that could change (e.g., the order in which certain things happen). Don't rely on any behavior that you observe in these situations.
Some functions return specific values (e.g., -1) to indicate that an error occurred, but aren't documented as returning specific values for success. You can interpret any other value as success, but don't make any assumptions about specific values. For example, MsgReply() is documented as returning -1 if an error occurred; don't assume that it returns 0 to indicate success. See also Returns in the What's in a Function Description? chapter.

For information about programming in QNX OS, see Getting Started with the QNX OS and the QNX OS Programmer's Guide.

For information about licensing, see Licensing information in Typographical Conventions, Support, and Licensing.

Page updated: August 09, 2024