Keep user in form (2000)

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The user must fill in one or both of two special fields (call them FieldA and FieldB) but may not leave them both blank. How can I keep the user from leaving this form until this condition is satisfied? I can trigger a cautioning message when they leave the form – but by that time, the form is closed. I need to trigger the message if they TRY to exit and before the form closes.

Thanks

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See the attached zipped database. A boolean variable is used to keep track of whether the form can be closed. (The demo actually does a bit more – it also forces the user to use a “Close” command button to close the form, not the x in the upper right corner of the form.) With the form open in design view, select View | Code to see the VBA code used.

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Yes! Thank you so much.

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Yes! Thank you so much.

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See the attached zipped database. A boolean variable is used to keep track of whether the form can be closed. (The demo actually does a bit more – it also forces the user to use a “Close” command button to close the form, not the x in the upper right corner of the form.) With the form open in design view, select View | Code to see the VBA code used.

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