No. Qt and GTK both avoid the Intrinsics ("Xt") and implment their own
style of object hiearchies, event handling, etc.
> or do they have their own
> equivalent for that level which then cal;ls the lower level X routines
Yes, they both call Xlib directly to do their drawing. The nice thing
is that, unlike Motif, they *also* can be use other graphic systems,
e.g., Qt for Windows and Mac.