[Discuss-gnuradio] SWIG and QT (QT4_WRAP_CPP issues)

[Stefan Wunsch]

Hi!

I try to add a QT GUI to my OOT module (gr-radar). I have some issues
with including the QT stuff in cmake and swig.

The problem is this error:

## /gr-radar/swig/../lib/range_velocity_diagram.h:45: Error: Syntax
error in input(3).
## make[2]: *** [swig/radar_swigPYTHON_wrap.cxx] Error 1
## make[1]: *** [swig/CMakeFiles/pygen_swig_9a820.dir/all] Error 2

The line 45 refers to
## public slots:
Whole class definition is appended.[0]

If I build my module without 'public slots:' line but WITH the Q_OBJECT
line everything runs fine and I get a new QT window. So I suppose that
the additional class range_velocity_diagram is included correctly in
cmake and swig. Also I think the Q_OBJECT macro is accepted by cmake and
swig.

I have looked at gr-qtgui and added QT4_WRAP_CPP to get the Q_OBJECT
macro running. My changes in CMakeLists.txt (lib directory):

set(QTGUI_MOC_HEADERS range_velocity_diagram.h)
QT4_WRAP_CPP(QTGUI_MOC_OUTFILES ${QTGUI_MOC_HEADERS})
add_library(gnuradio-radar SHARED ${radar_sources} ${QTGUI_MOC_OUTFILES})

Do I need to add more to get swig running with the QT slots and signals?
I am correct with the assumption that cmake and swig accepts the
Q_OBJECT macro?

Best regards
Stefan

[0] Class definition range_velocity_diagram
class range_velocity_diagram : public QWidget
{
Q_OBJECT;

public:
        range_velocity_diagram();
        ~range_velocity_diagram();
        
private:
        QwtPlot* d_plot;
        QwtPlotCurve* d_curve;
        
public slots:

};