No he doesn't have to take care. I compensite this problem of geometries. He only has to subclass. And the problem with windows users which theme their desktop is fixed with 0.5.5.
You can now fully disable the skins, even skinwindow lib is compiled into the app. I added a property in the config file.
WindowTitle wotks either, i didn't add the icon feature and the problem with mainWindow features can be fixed easily by setting for central widget of QSkinMainWindow the programmers mainwindow(will fix this, the classes aren't version 1.0 of course there are some bugs).

Why do you need windows development data? it works on linux, either (and there it was developed).

I don't think, a Qt Stylesheet like config would be good, because i only save the skin path, wether blur or not, style on/off, Window Background Color, Title Color and Title font. It's easier and faster with QSettings.

Can't find the engine of BasysKom, this could be interresting.