What is the difference in qt_resource_struct? Regarding the qrc_*.cpp generated by rcc during building process.

The same source codes generate different qrc_*.cpp files. The only difference is qt_resource_struct, that the last few bytes are different across builds. See the attached .zip file for details and examples.

1. What is qt_resource_struct and what are those changing bytes? My guess: some sort of entry point or position.
2. What causes the change? Right now, I can see that cleaning old builds doesn't, but removing entire source folder (local repo) does. My guess: as long as .qml files remain, qt_resource_struct stays the same.
3. What do those bytes affect? My guess: nothing. Since I actually do not notice anything different.