i can already
think of 3 or 4 places where we need to search for a tour. there will probably
be even more places where we need to do this. it is very easy to see that if we
can come up with a way to re-use the same form we will dramatically reduce
development time.
now our
now our
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our second example where we search
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notice in both cases we are able to re-use the "same" tour search
form. i should note that this simple technique is not used by most access
developers. in fact, to get access to do this we have to use a bit of a trick.
the trick involves opening a form in dialog mode (this will halt the calling
event code). to continue, we set the form's visible property to false. this
causes the form to drop out of dialog mode, and the calling code continues. the
values of the "non" visible form can then be used. after we get our values, we
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form re-use gives us:
a more consistent look and feel since we *are* using the same
form
reduced maintenance, and less forms to change when a changes are
required
application size is smaller and loads faster
application runs faster, since the form is being re-used, and thus
is probably already cached in memory
gee, the above list has every single desirable trait a developer could
aim for. i might add that the above list is by no means complete. this is darn
near a pot of gold at the end of the rainbow. gee, faster, better, cheaper?hum
how did they make the 6 million dollar man?
there are several approaches
to solving the above problem. one approach is to "pass" the name of the form
that the "search form" should load when a tour is found. however, we might not
want to load a form after the search (maybe we want to print a tour). hence, the
best solution is to not use a event on the form to launch another form.
yikes!, this means we digress from the event model a bit (hey, it is just
a tiny bit for a huge bonus).
what we do is "wrap" the form in a function
subroutine and call it. it is that simple. while this approach does adds a few
lines of code, we get instant re-use.
example looks
like:
for a tour, and then want to do
for a tour, and then want to do
maintenance on the tour becomes:
the above advice is nothing new, but one must always seek
to improve design and coding techniques. re use of screens is an obvious area
for reducing development time. the above simple change in design approach saved
large amounts of time. if your application does not have too rich of a
interface, then your mileage will vary
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