XView abstracts a number of other X11 functions that Motif (Xt) does not. In order to get equivalent functionality in Motif, these must be re-coded with direct Xlib calls.
The XView packages with no Motif equivalents are:
Icon
Server Image
Colormap Segment (CMS)
Cursor
Fullscreen
Server
Font
Additionally, no Solaris Motif equivalent exists for the OPEN LOOK user interface functionality that splits windows into different views. To implement this function, you must subclass one of the Motif Manager widgets.
Some XView functions can be coded with the Motif/Xt API; however, these APIs are significantly different, and require complete redesign and recoding. These functions are: