= zmq_msg_init(3) == NAME zmq_msg_init - initialise empty 0MQ message == SYNOPSIS *int zmq_msg_init (zmq_msg_t '*msg');* == DESCRIPTION The _zmq_msg_init()_ function shall initialise the message object referenced by 'msg' to represent an empty message. This function is most useful when called before receiving a message with _zmq_msg_recv()_. CAUTION: Never access 'zmq_msg_t' members directly, instead always use the _zmq_msg_ family of functions. CAUTION: The functions _zmq_msg_init()_, _zmq_msg_init_data()_, _zmq_msg_init_size()_ and _zmq_msg_init_buffer()_ are mutually exclusive. Never initialise the same 'zmq_msg_t' twice. == RETURN VALUE The _zmq_msg_init()_ function always returns zero. == ERRORS No errors are defined. == EXAMPLE .Receiving a message from a socket ---- zmq_msg_t msg; rc = zmq_msg_init (&msg); assert (rc == 0); int nbytes = zmq_msg_recv (socket, &msg, 0); assert (nbytes != -1); ---- == SEE ALSO xref:zmq_msg_init_size.adoc[zmq_msg_init_size] xref:zmq_msg_init_buffer.adoc[zmq_msg_init_buffer] xref:zmq_msg_init_data.adoc[zmq_msg_init_data] xref:zmq_msg_close.adoc[zmq_msg_close] xref:zmq_msg_data.adoc[zmq_msg_data] xref:zmq_msg_size.adoc[zmq_msg_size] xref:zmq.adoc[zmq] == AUTHORS This page was written by the 0MQ community. To make a change please read the 0MQ Contribution Policy at .