What is the proper way to verify if a user wants to quit an application? I have the following in my Destroy event, but I don't know what to do if they answer 'No'.

TIA

Answer=MessageBox("Are you sure you want to quit?",276,"Quit?")
Do Case
	Case Answer=6 && Yes
		Close Tables all
		Close DataBases All
		Clear Events
	Case Answer=7 && No
		(What do I do here?)
EndCase