If you are looking for a simple C++ QWebEngineView + QWebChannel example, the Qt example https://doc.qt.io/qt-6/qtwebengine-webenginewidgets-recipebrowser-example.html

Does exactly list.

It uses a QWebChannel to expose a QPlainTextEdit to the webpage in the QWbEngineView.

It definitely clarified some of the issues for me and showed best practices for the methodology