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Par2: ABC: Sequence of events 2002-02-08 -- Dennis Evans There is a learning curve with ABC but it is not really all that bad,
no more so than when you started with Clarion. A lot of folks claim the
legacy stuff is simpler to understand have probably been using it for some
time and many came from the DOS versions, they had a pretty good head start.
The main advantage to ABC is once you get done with the 70 percent cookie
cutter stuff, ABC is much simpler to alter, with inheritance or deriving
objects.
Actually one of the two or three real advantages to OOP is up front anyway
not in individual methods or procedures. Interfaces are very cool also but
take a little practice.
.
One little note to help with learning ABC memorize this sequence,
run
ask
kill
Ask method is
accept
takeevent
end
This is the important one,
TakeEvent
TakeWindowEvent
TakeAccepted
TakeSelected
TakeNewSelection
Alert key events
TakeFieldEvent
Component TakeEvent ! calls browse class file drop takeevent
Component ResetRequired ? ! resets window
end
keep the sequence that events are handled in mind, once you get that
sequence in your head life will get real easy.
Today is November 21, 2024, 4:00 am This article has been viewed 35205 times.
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