and the A P L interpreter executes it as an expression and returns the result in the s a m e variable. Y o u r callback routine can be doing other things while A P L is mulling over your expression. T h e sample C code that does this is not distributed, but I think I B M will m a k e it available soon. A n even simpler w a y of using Motif is possible if the application is going to run from the A P L 2 environment. Y o u write the C code that utilizes Motif as a stand-alone process and get to it with DNA or w i t h AP100 (or t h e supplied H O S T function). T h e d i s a d v a n t a g e h e r e is t h a t t he C code will grab th e focus until its window is closed. This m a y be t h e effect y o u want, say, to force t h e user to a n s w e r a q u
/lp/association-for-computing-machinery/a-review-of-agss-a-graphical-statistical-system-2nZNf757r4