Strategy to detect changes on screen

I have a JPane which is in a JFrame and pane holds all my gui components like JComboBox , JTable , JStringField etc....what is the
best , easiest way to implement a "listener" which will sense if a user has changed any component value so that I can give a message "Please save changes or u will lose it" if user "Xes" out of the screen...
Thanks for your time

1) Have a 'boolean = false' to record the change
2) add appropriate listeners to all your components... JTable.addTableModelListener / JTextField.addKeyListener / JComboBox.addActionListener etc etc
3) any event on the above listeners... will set the 'boolean = true', with a bit faster performance... use this < if(boolean = false) boolean = true; >
4) when user "Xes" out of the screen... check the boolean value, if it's true, then ask the user if changes need to be saved.

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Best Regards,
Waqas Dar

how often do you expect that to happen??
you can use the screenResolutionX and screenResolutionY
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Hi Gurus,
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Thanks in advance.

Hi,
The modification of a screen element attribute (LOOP AT SCREEN...MODIFY SCREEN) must always be done in the PBO (for a dynpro, it will be in a PBO module, i.e. declared by MODULE ... OUTPUT)
About the loop at the internal table, it is done automatically by the system, also during the PBO, you'll find something like LOOP [AT itab] ... WITH CONTROL ... in the PBO part of the screen flow logic (note: you may have to complete with a supplementary READ TABLE if you don't use AT itab). So you don't need an additional loop.
Best regards
Sandra

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Message was edited by: Andy__D

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Hi and welcome to the Skype Community,
Please change your password to ensure that no other location is preventing/reverting the name change: https://support.skype.com/en/faq/FA95/how-do-i-change-my-password
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*Although I am an HP employee, I am speaking for myself and not for HP.
****Click the White Kudos star to say thanks****
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Strategy to detect changes on screen

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