Getting values from a multi check box

Question

I have a multi record block with on text item and check box... I ned to get the value when i click the checkbox to fetch the data from teh sql query..
For eg;
I have a multi record block with the values as A,B,C,D,E and if i check the checkbox for teh dept A,C,D then I should ge the return value as ('A','C','D') to fetch the data from the query
Requesting your help..Thanks in Advance

Answer 1

Checkbox properties:
"Value when Checked" - 1
"Value when Unchecked" - 0
Create variable str varchar2(2000) in the package val
Create summerized item (sum of checkboxes)
When-Checkbox-Changed Trigger
if <checkbox> = 1
then
val.str := val.str||''''||<text_value||''',';
else
val.str := replace(val.str, ''''||<text_value||''',', NULL);
end if;
Pre-qwery trigger
if <sum of checkboxes> = 0
then
-- No selection => no qwery
raise form_trigger_failure;
elsif <sum of checkboxes> = 1
then
set_block_property(..., default_where, 'where ... = '||rtrim(val.str, ','));
else
set_block_property(..., default_where, 'where ... IN ('||rtrim(val.str, ',')||')');
end if;