>>>>I have a form. On the form is a Pageframe with two pages. Each page has a ADD/SAVE button and a DONE/CANCEL button.
>>>>
>>>>If the use presses the "X" button, I want to validate that there are no unsaved changes.
>>>>
>>>>I've put the following code in various methods

>>>>NODEFAULT
>>>>WITH thisform.pageframe1
>>>>   IF .pages(.activepage).cmdAdd_Save.caption = "Save"
>>>>	=MESSAGEBOX("You have unsaved changes"+CHR(10)+"Please press <Save> or <Cancel>")
>>>>	RETURN .F.
>>>>   ELSE
>>>>	DODEFAULT()
>>>>   ENDIF
>>>>ENDWITH

>>>>
>>>>When I put this in the Form Release method the code didn't fire when I clicked the X.
>>>>
>>>>When I put this in the Form Unload method, the pageframe had already been unloaded and an error was generated.
>>>>
>>>>When I put this in the Destroy method, the messagebox popped up, but the form closed anyway.
>>>>
>>>>Similar syntax works correctly in the page Deactivate event.
>>>>
>>>>I could really use some advice on the correct event to code and the proper syntax to make this work the way I would like.
>>>>
>>>>Thanks to all.........Rich
>>>
>>>Validation code should go to Form.QueryUnload event.
>>
>>Thank you very much. One extra question if I may......
>>
>>This now works......but have I "properly" coded NODEFAULT and DODEFAULT()???
>>
>>Thanks again
>
>NODEFAULT should be used conditionally, i.e. it's fired when you don't want form to be closed, e.g.
>

>*** form.queryunload event
>IF This.CloseForm()=.F.  && closeform is custom method containing validation code
>  NODEFAULT
>ENDIF
>

>There is no need (generally) to use DoDefault() here unless your form is subclassed and you really want to execute parent class QueryUnload code.

Thanks to you and Fred both. Appreciate it.