in this url http://www.commonkads.uva.nl/frameset-commonkads.html on tools tab there is an example program in prolog i download it and consult main_xpce but no window appear to show program this is a xpce prolog program and must have a window
i have similar problem with demo xpce in swi that they are act like that ,when consult no windows appear! for example kangaroo.pl in C:\Program Files (x86)\swipl\xpce\prolog\demo when consult this file no appearance results but when use xpce.man menu it work properly plz help me