trq_prev_msg()

`trq_prev_msg()`#

trq_prev_msg() retrieves the previous message in the queue iteration.

C

Prototype

q_msg trq_prev_msg(
    q_msg msg
);

Parameters

Key	Type	Description
`msg`	`q_msg`	The current message in the queue iteration.

Return Value

Returns the previous message in the queue iteration, or NULL if there are no more messages.

Notes

Use trq_first_msg() or trq_last_msg() to obtain an initial message before iterating with trq_prev_msg().

JS

Prototype

// Not applicable in JS

Python

Prototype

# Not applicable in Python