The \fIzmq_msg_get()\fR function shall return zero if successful\&. Otherwise it shall return \-1 and set \fIerrno\fR to one of the values defined below\&.
48
The \fIzmq_msg_get()\fR function shall return the value for the property if successful\&. Otherwise it shall return \-1 and set \fIerrno\fR to one of the values defined below\&.