How to enforce the message "Do you want to save changes?"

Question

Hello,
How to enforce the message "Do you want to save changes?" when the user attempts to close a form after checking a non-database item (check-box).
All the other database items in the block are not updateable and only viewable.
After checking the non database item check-box, if the user tries to commit, then the system is saving the changes and call the appropriate procedure on save.
But if the user tries to close the window without committing, the form is not showing the message "Do you want to save changes?" since the check-box is a non database item.
How to enforce the message "Do you want to save changes?" in this scenario when the user tries to close the window?
Thanks in advance.
Cheers
Sri

Answer 1

This is a fairly common question in the forum. You will need to override the default exit form process and check to see if the checkbox is checked. You can do this in the Key-Exit trigger. For Example:
DECLARE
  al_id     ALERT;
  al_button  NUMBER;
BEGIN
  IF ( CHECKBOX_CHECKED('YOUR_BLOCK.CHECKBOX_ITEM') ) THEN
     /* Display an Alert here that asks, "Do you want to save changes?" */
     ...code here to set the properties of your alert...
     al_button := Show_Alert(al_id);
     IF ( al_button = ALERT_BUTTON1 ) THEN
        --YES
        /* Perform COMMIT Processing here...*/
     ELSIF ( al_button = ALERT_BUTTON2 ) THEN
        --No
        Exit_Form(NO_VALIDATE);
     ELSE
        --Cancel
        RAISE Form_Trigger_Failure;
     END IF;
  ELSE
     Exit_Form;
  END IF;
END;If you need more help with the Alert, please check out the SHOW_ALERT topic in the Forms Help.
BTW, what happens if all the user does is check the checkbox? No other changes have occured. What changes are you trying to process?
Hope this helps,
Craig B-)
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