Earlier quoted context omitted.
OK then it's a terminological confusion, because I would say that gives you a dependency on said "dynamic link libraries". Whether you need to write a C/C++ wrapper only determines if the dependency is in runtime or also compile time.
You have zero dependencies aside from the OS.
On Windows or Mac this may be true, but with Linux the GTK or Qt libraries are not part of the OS, but are used in desktop environments which may or may not be installed, and there are different version etc. so things are more messy and it's definitely a dependency which has to be fulfilled (at least at runtime).