xif_main_loop xif_main_loop(+ExitCond) xif_main_loop(+ExitCond, +Context) xif_main_loop(+Displayable, +ExitCond, +Context)
These handle both ProXT and ProXL events. ProXT and ProXL have their
own event handling mechanisms. If you combine ProXL and ProXT
callbacks, you must use one of
xif_main_loop/[0,1,2,3] instead of
These predicates are direct analogues of the ProXL predicates
handle_events/[0,1,2,3], and are used in exactly the same way.
See the ProXL documentation for more detailed information on the
arguments, and how they tie in with ProXL callbacks.
If you do not use ProXL callbacks, you do not need these predicates; you
can just call
xtMainLoop/0. You may mix ProXT and ProXL callbacks