I have just recently tested the demo and purchased the Pro version and love to functionality of QCAD for my various product design projects. In my former career I worked with AutoCAD for quite a few years and came to use quite an extensive colored layer system.
Hopefully, this is a simple fix, but I have set colors (for screen distinction) and pen weights (for printing distinction) to a few layers to test their relative appearance on paper. They printed in color, of course- but I realized then (after having it set up in AutoCAD for so many years I didn't think about it anymore) that I had to set the printing color to black. But I can't seem to find that toggle anywhere.
My HP printer settings interface seems to grant me a Print in Grayscale with black-ink option, but still prints the colored lines in shades of gray instead of solid black of a certain pen weight.
Is there a way, within QCAD, to set the layers to print in solid black, while retaining their screen color attributes?