obtain corresponding keysym
- KeySym XtGetActionKeysym(XEvent* event, Modifiers*
Specifies the event pointer passed to the action procedure by the
Returns the modifiers that caused the match, if non-NULL.
is called after an action procedure has been invoked by the Intrinsics
and before that action procedure returns, and if the event pointer has
the same value as the event pointer passed to that action routine, and
if the event is a
returns the KeySym that matched the final event specification in the
translation table and, if modifiers_return is non-NULL, the
modifier state actually used to generate this KeySym; otherwise, if
the event is a
and returns the results; else it returns
and does not examine modifiers_return.