XtHooksOfDisplay - external agent access points
Widget XtHooksOfDisplay(Display* display);
display Specifies the desired display.
The class of this object is a private, implementation dependent,
subclass of Object. The hook object has no parent. The resources of
this object are the callback lists for hooks and the read-only
resources for getting a list of parentless shells.
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface