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ABC: Default to yes button on confirm delete
1998-12-27 -- Jim Kane
 
Newsgroups: topspeed.products.c4

> How do you make the "No" button pre-highlighted when the Confirm Delete
> window pops up?

Good question but not a terribly easy task.  I use the error class
takeother() functionality for 'special' cases.  Search ABERROR.TRN for
the message you want to change. In this case find:

       USHORT(Msg:ConfirmDelete)
       BYTE(Level:User)

Change the Level:User to any number greater than 5 (highest currently
defined level) I use 99.

Then go to aberror.clw and find this part:
! This is purely here to enable people to add their own fatality levels
! By default an unknown fatality is a program error
ErrorClass.TakeOther PROCEDURE
  CODE
    RETURN SELF.TakeProgram()

! This is really to allow the user to confirm an action
! The simple case is just a yes or no with a yes default
ErrorClass.TakeUser PROCEDURE
  CODE
    IF MESSAGE(Self.SubsString(),Self.Errors.Title,ICON:Question, |
       Button:Yes+Button:No,BUTTON:Yes,0) = Button:Yes
      RETURN Level:Benign
    ELSE
      RETURN Level:Cancel
    END

Now write your own TakeOther based on takeUser that normally processes
Msg:confirmDelete:
ErrorClass.TakeOther PROCEDURE
  CODE
    Case SELF.Errors.Id
    Of Msg:ConfirmDelete
      IF MESSAGE(Self.SubsString(),Self.Errors.Title,ICON:Question, |
        Button:Yes+Button:No,BUTTON:NO,0) = Button:Yes
        RETURN Level:Benign
      ELSE
        RETURN Level:Cancel
      END
    ELSE
      RETURN SELF.TakeProgram()
    END

Using this basic method you can greatly customize error handling to any
degree you want. The only drawback is you need to modify takeOther in
every new copy of aberror you get. Likewise with aberror.trn. But its
pretty fast.

---
Jim Kane



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