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So I have a simple app that uses QML for my graphical interface and c++ code for some of the logic. I was looking for a method to compile the QML into c++ code and link it into my binary and found this page over at the Qt home site:

Basically it says use the resource system for all of my QML graphical interface files and add the QML compiler flag to my qmake config line in my .pro file and everything should be good to go.

As far as I know everything compiles fine, but when I use the the Qt windeployqt.exe tool to get all of the dependency files and test it on a clean system, I get a small white screen as if my QML files were not loaded properly.

I have one c++ reference to my main QML file using "qrc:/mainqml.qml" and that's it.

Any idea what I am doing wrong?

You're using the open source version of Qt. It didn't come with the Qt Quick compiler until Qt 5.11 where it is included - and after a rework, too. So it performs better than precompiled QML did in Qt 5.10 and before.

I get a small white screen as if my QML files were not loaded properly.

... thus you need to deploy these files with the application, otherwise it won't work.

add the QML compiler flag to my qmake config

That flag was a no-op on an open source Qt build until Qt 5.11.

Qt Quick Compiler only shipped with Qt Commercial License, but you can still compile your QML files into qrc file. Starting a Qt Quick application project from Qt Creator does exactly this.

Deploying QML application with windeployqt require additional flag --qmldir, e.g.

It will parse your qml files and deploy all qml imports you used.

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