Using Zeromq with Qt

doubitchou

hi,

I want to use Zeromq with Qt so I've used the newest nzmqt implementation. Unfortunately, this ends by :

In file included from ..\include/nzmqt/nzmqt.hpp:32:0,
                 from ..\src\nzmqt\nzmqt.cpp:28:
..\3rdparty\cppzmq/zmq.hpp:566:47: error: 'zmq_event_t' does not name a type
         virtual void on_event_connected(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; }
                                               ^
..\3rdparty\cppzmq/zmq.hpp:567:53: error: 'zmq_event_t' does not name a type
         virtual void on_event_connect_delayed(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_;

....and so on

I've removed the comment from the .pro file:

DEFINES += \
# Uncomment this line for nzmqt "Include and Source File" compilation option.
    NZMQT_LIB

SOURCES += \
# Uncomment this line for nzmqt "Include and Source File" compilation option.
    nzmqt/nzmqt.cpp \
    app/main.cpp

which doesn't change anything
I've also tried with the official C++ implementation with the same results.

What is the way to use Zeromq with Qt using mingw ?

m.sue

Hi,
Please check whether you added the appropriate "INCLUDEPATH += path/to/the/0mq/include/files" to your .pro-file.
-Michael.

doubitchou

@m.sue said in Using Zeromq with Qt:

Hi,
Please check whether you added the appropriate "INCLUDEPATH += path/to/the/0mq/include/files" to your .pro-file.
-Michael.

Hi Michael,
Indeed I have set the include path :

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = Test_zmq
TEMPLATE = app

INCLUDEPATH += ../../Git_hub/nzmqt/3rdparty/cppzmq

SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h \
            ../../Git_hub/nzmqt/3rdparty/cppzmq/zmq.hpp

FORMS    += mainwindow.ui

DISTFILES += \
    ../../Git_hub/libzmq/builds/mingw32/Makefile.mingw32

and then use the graphical application template with :

#include "zmq.hpp"

josephdp

Please check your 0MQ version installed in your machine.

doubitchou

@josephdp said in Using Zeromq with Qt:

Please check your 0MQ version installed in your machine.

I'm not sure to understand. I've cloned nzmqt from Github .

Besides, if you say that I should also add a path to the "C" version of it like

INCLUDEPATH += ../../Git_hub/nzmqt/3rdparty/cppzmq \
../../ZeroMQ 4.0.4/include

This is not working neither

m.sue

Maybe because of the "blank" in the path name "../../ZeroMQ 4.0.4/include". INCLUDEPATH will understand it as two paths: "../../ZeroMQ" and "4.0.4/include".
-Michael.

doubitchou

@m.sue said in Using Zeromq with Qt:

Maybe because of the "blank" in the path name "../../ZeroMQ 4.0.4/include". INCLUDEPATH will understand it as two paths: "../../ZeroMQ" and "4.0.4/include".
-Michael.

I thought it were about the path indeed, but after renamed it and modified the .pro:

INCLUDEPATH += ../../Git_hub/nzmqt/3rdparty/cppzmq \
               ../../ZeroMQ404/include

I have the same zmq type errors.

doubitchou

@doubitchou

I finally found it, there were 2 things:

the space in the path
the order of inclusions : you need to include zeromq before nzmqt

Thanks Michael