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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 QNX Neutrino 7.1.
Utilities & Libraries
Devctl and Ioctl Commands
DCMD_MISC_*
DCMD_MISC_MQSETCLOSEMSG
Inject a canned message when a queue descriptor is closed

QNX Momentics IDE User's Guide
This User's Guide describes version 7.1 of the Integrated Development Environment (IDE) that's part of the QNX Momentics 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 QNX Neutrino 7.1.
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      - DCMD_MISC_MQGETATTR
        Get the attributes of a message queue
      - DCMD_MISC_MQSETATTR
        Set the attributes of a message queue
      - DCMD_MISC_MQSETCLOSEMSG
        Inject a canned message when a queue descriptor is closed
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    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.
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Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation and explains how to obtain technical support.

DCMD_MISC_MQSETCLOSEMSG

Inject a canned message when a queue descriptor is closed

Synopsis:

#include <sys/dcmd_misc.h>

#define DCMD_MISC_MQSETCLOSEMSG __DIOT(_DCMD_MISC, 4, struct { char __data[64];})

Arguments to devctl():


Argument	Value
`filedes`	A file descriptor that you obtained by opening the device.
`dcmd`	DCMD_MISC_MQSETCLOSEMSG
`dev_data_ptr`	A pointer to a struct { char __data[64];}.
`n_bytes`	`sizeof(struct { char __data[64];})`
`dev_info_ptr`	NULL

Description:

This command specifies a canned message that's injected when a message descriptor is closed.

Note:

The alternate (mq) implementation of message queues doesn't support this command.

Input:

The string that you want to inject.

Output:

None.