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Topic: Datasource OnDataChange (Read 834 times)
P.curtis
Jr. Member
Posts: 80
Datasource OnDataChange
«
on:
May 30, 2020, 06:54:37 pm »
Hi All,
Is it possible to make the OnDataChange event only get called on move event (NEXT, FIRST, ....)?
Thanks in advance.
Phil.
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lucamar
Hero Member
Posts: 4219
Re: Datasource OnDataChange
«
Reply #1 on:
May 30, 2020, 09:00:42 pm »
Not without a deep change in fcl-db, but you can always ignore any event in your handler. If you only want to react to "scroll" events then do nothing unless:
not Assigned(Field)
As the documentation states:
Quote
If the dataset has scrolled, then the Field parameter is Nil
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Turbo Pascal 3 CP/M - Amstrad PCW 8256 (512 KB !!!)
Lazarus/FPC 2.0.8/3.0.4 & 2.0.12/3.2.0 - 32/64 bits on:
(K|L|X)Ubuntu 12..18, Windows XP, 7, 10 and various DOSes.
P.curtis
Jr. Member
Posts: 80
Re: Datasource OnDataChange
«
Reply #2 on:
May 30, 2020, 09:28:02 pm »
Good call, I'll look into it. Thanks.
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