What you're encountering is a fundamental and nontrivial problem. In
REALbasic, a general solution is to represent a query using an object.
This object can then notify other objects when a query is completed.
This requires you to think about the problem you're trying to solve
from an event-driven standpoint. Using a timer is usually a hack,
although I have encountered an occasional situation in which a timer
turned out to be the cleanest solution.
Charles Yeomans
On Jan 14, 2006, at 4:52 PM, johnf wrote:
Hi,
In my programs I want to wait for a function to complete before
continuing on
with the rest of the program. Most of this waiting has to do with data
access. So when I make a query I want the program to wait for the
results of
the query. Once I know the results I move to the next part of the
program.
But nothing interupts the program flow.
make a data query.
if good data then -> this fires immediately does not wait until the
query
completes
Adding a timer does not interrupt the flow. Timers only work when the
program
become idle or is out of the current function (not completely sure
that is
correct).
make a data query.
timer1.enabled = true
if good data then -> this fires immediately does not wait until for
the timer
to complete
Timer will now fire.......
make a data query.
timer1.mode = 2
timer1 action
'just wait until the data is good
if good data then
dosomething
else
dosomething_Else_to_correct_the_issue
end if
timer1.enabled = false
I think the last one is the correct way???? But it only sort of works.
So the question is how do I wait some action/query/function to
complete before
going on to the next part of the program. BTW with the last example a
second
timer will be required because the
"dosomething_Else_to_correct_the_issue"
will also have to wait until it is finished - right?
John
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