C screen management packages

[grundke at watt.ccs.tuns.ca]

I'm looking for your advice on C screen management software.  We want to use 
it as part of a toolkit to support educational simulation software development.

Our essential requirements include windowing, definable fields within windows 
for data display in flexible formats, scrolling windows, dynamic creation and 
deletion of windows and fields, support for video attributes, editable fields, 
draggable windows and fields;  source code preferred.  

Our "desirables" include support on both PCs and Unix (curses), support for 
common graphics standards, mouse support. 

If you've used one (or preferably several) of Vermont Views, C-scape, SMP, 
Blaise Tools, Radix or the like, I'd appreciate hearing your assessment of the 
product and its support.  Are there other packages (commercial or shareware) we 
should consider? 

Please reply to grundke at tuns.ca.  I'll post a summary of responses!  Thanks. 

Dr. Ernst W. Grundke, School of Computer Science, Technical University of Nova 
Scotia, Halifax, N.S., Canada.