DEVELEPOR 2000 - Forms 5.0 Clearing a different block

Question

I have two blocks A & B in a form. Block A is a control block
and Block B is a base table block. When the value in a TextItem
in Block A is changed, I want to clear the Block B. I cannot use
the Clear_Block function in the WHEN-VALIDATE-ITEM trigger for
the TextItem because forms doesn't allow navigation to a
different block in this trigger. Can anyone suggest a different
method ??
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Answer 1

Raghu Menon (guest) wrote:
: I have two blocks A & B in a form. Block A is a control block
: and Block B is a base table block. When the value in a
TextItem
: in Block A is changed, I want to clear the Block B. I cannot
use
: the Clear_Block function in the WHEN-VALIDATE-ITEM trigger for
: the TextItem because forms doesn't allow navigation to a
: different block in this trigger. Can anyone suggest a
different
: method ??
How about this (in psuedo code)
1) upon entering a field in block A do; store orginal field
value in a variable, store block.field_id in variable
2) when user moves to another field in block check...
if field value != saved value in variable and block B has
stuff in it then
alert('value in block A changed, do you want block B
cleared???)
if yes then
go_block('B');
clear_block(no_validate);
go_item(block.field_id) stored from 1 above
else
go to desired field;
end if;
end if;
of course this is just a rough outline, also worry about nulls
in IF compare, etc, etc, etc.
This lets WHEN-VALIDATE-ITEM do its thing. This code could be
stuck under other another type of trigger ie key tab or whatever.
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