Historical reasons due to Qt's original license and the whole C vs C++ on the Linux world (both are anyway Bell Labs languages designed for UNIX).
So C camp went with GNOME, and C++ camp with KDE.
Naturally then GNOME got bindings for C++ (actually quite good), however it is a big difference being the main language or one that always needs someone to write bindings.
So C camp went with GNOME, and C++ camp with KDE.
Naturally then GNOME got bindings for C++ (actually quite good), however it is a big difference being the main language or one that always needs someone to write bindings.