Calling another form when current form is in query mode

Question

I have a form that is in query mode. When I select a menu option that calls another form through new_form, I get the error 'FRM-41009: Function key not allowed. Press Ctrl+F1 for list of valid keys.'
I would like trap this error, cancel the query and invoke the new form. I have tried to do this by code similar to this:
if :system.mode = 'enter-query' then
exit_form ;
end if ;
new_form('someform') ;
(since exit_form in query mode is supposed to cancel the query).
But in this case, the trigger ends with the execution of the 'exit_form' statement.
Any help would be greatly appreciated.
Thanks and regards,
Rajesh Jayaprakash
[email protected]

Answer 1

I think the following will work:
When you call the EXIT_FORM builtin, Forms cancels out of Query Mode but also stops the current PL/SQ execution - which is annoying.
I believe, though, that the WHEN-WINDOW-ACTIVATED trigger will fire on your Form. Therefore, you can:
1) Set a Global Variable or PL/SQL packaged variable just before you call the EXIT_FORM builtin then
2) Test the value of the Global Variable in the WHEN-WINDOW-ACTIVATED trigger and perform the CALL_FORM there.
3) Even better, put the CALL_FORM and associated parameters into a Program Unit on the Form - then you can call it from either the original trigger or the WWA trigger as necessary.
If this does not work, you could resort to:
1) Set a Global Variable just before you call the EXIT_FORM builtin
2) Initiate a TIMER
3) Call the EXIT_FORM builtin
4) In a WHEN-TIMER-EXPIRED trigger, check the value of the Global variable. If it's set, Call the Form you want to call
5) Again, put the actual CALL_FORM in a Program Unit so it can easily be called with the correct parameters from wherever you need to call it.
It's annoying that you need to go to these lengths to perform what seems to be such an easy task!
If anyone knows any better ways of achieving this, please add another reply!