As a first-time user of QCustomPlot (and Qt in general, for that matter), I am impressed.
I've been able to follow the documentation at e.g. https://www.qcustomplot.com/index.php/demos/barchartdemo
in order to produce plots from inside my Qt-based GUI.
Since I target these plots for scientific publication, however, filling with colors may not be the option for me,
as conference proceedings are usually black-and-white. If there any way, therefore, to set "patterns", e.g.