multiple left axes in QwtPlot still possible? -solved

[qt_gotcha]

Hi
I found this: https://www.qtcentre.org/threads/690...Plot-multiaxes
which suggests there is a file qwt_axis_id.h
and you can define multiple left and right axes
QwtAxisId axisY1(QwtPlot::yLeft,0);
QwtAxisId axisY2(QwtPlot::yLeft,1);
This post refers also to https://www.developpez.net/forums/d1...lusieurs-axes/
for another example
which uses QGraph->setYAxis(QwtAxisId(QwtAxis::yLeft, 0));

however I cannot find any reference to QwtAxisId in version 6.1.6 ? I hope this feature still exists?
(my install is package within msys2)
Thanks
Victor

EDIT: the solution is in this branch: http://svn.code.sf.net/p/qwt/code/br...6.1-multiaxes/