[Lazarus] Suppressing OnChange

[bsquared]

On 11/08/2012 07:28 AM, Timothy Groves wrote:
> I have a program which allows you to edit records.  This is done using a
> dynamic array of records, with three strings in each record.  I have
> been using TEdits to allow the user to edit the records.  The record is
> updated during TEdit.OnChange.
>
> Unfortunately, whenever I push the data *from* a selected record *to*
> the form, TEdit.OnChange triggers, which tends to corrupt my data.  I
> tried disabling the TEdit, using TEdit.Enabled := false, but the event
> still triggers.
>
> Any suggestions?
>
>
>
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>

You can temporarily un-assign the event handler.
{ remove event handler from all edits }
with MyForm do
   for (i := 0 to Pred(Form.ComponentCount)) do
     if (Components[i] is TEdit) then
     begin
       theEdit := TEdit(Components[i])
       theEdit.OnChange := nil;
     end;

PushMyData();

{ re-assign the event handler to all edit }
with MyForm do
   for (i := 0 to Pred(ComponentCount)) do
     if (Components[i] is TEdit) then
     begin
       theEdit := TEdit(Components[i])
       theEdit.OnChange := @OnChange;
     end;

I apologize if this double posts. I had some problem with the first attempt.

-- 
Regards,
Brian