@JonB said in QHelpEngine:

Or, does the code at https://github.com/srish/QtHelpManual/blob/master/main.cpp (a) work and (b) help you?

I tried this and it almost works. Almost because only the root link from the index view is working, then I have to use links from the content view to navigate. Links under the root item (children) are not working from the index view and clicking on them add error messages in output:

QFSFileEngine::open: No file name specified QTextBrowser: No document for qthelp://org.qt-project.examples.simpletextviewer/doc/./openfile.html

When using my own documentation .qhc file, nothing is displayed. So I definitely didn't catch the logic here. I guess I will stay with Doxygen for documentation.