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How do I add a "confirm close dialog box" to a FoxPro application that should appear when user clicks close (X) button?

I would like a confirmation dialog box ("There are unsaved changes. Are you sure you want to exit?") to appear when a user clicks on the close (X) button on a form in a FoxPro application. If user selects No the existing form should continue to be displayed.

Thank you.
1 Solution
I think you need to handle the WM_CLOSE message. Open the dialog in this handler and only call the terminating function if yes was selected. Else do nothing.

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