Using GTK+ on DirectFB 3 GTK Library Using GTK+ on DirectFB DirectFB-specific aspects of using GTK+ The DirectFB port of GTK+ is an implementation of GDK (and therefore GTK+) on top of the DirectFB libraries. Like the obsolete linux-fb port of GTK+, it runs on the Linux framebuffer, but the DirectFB libraries provide additional features like hardware graphics acceleration, input device handling and abstraction and an integrated windowing system. Beyond the usual GTK+ build requirements, the DirectFB backend (obviously) needs the DirectFB libraries (at least 0.9.21) and Cairo compiled with DirectFB support.