> Some of these apps are closed source, so suggesting a rewrite in Qt is out of question. Qt is LGPL. So long as you dynamically link to Qt, it doesn't matter

> Some of these apps are closed source, so suggesting a rewrite in Qt is out of question. Qt is LGPL. So long as you dynamically link to Qt, it doesn't matter what license your app is under. If you don't dynamically link, you lose the integration benefits anyway, so there's no downside, really (Qt is backwards compatible within each major release, so just build against the earliest version of Qt 5 your app works with). > GDI has the advantage of being the default, so that "native look" is consistent across most applications since the 3.1 days History means we have two defaults on Linux: Qt and GTK. Qt integrates well in a GTK desktop though, so you can just use Qt.