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Par2: Message when cancelling parent but child changed
2001-06-27 -- George Lehman
 
Ok, I have a solution. I searched several directories for code related to
cancel, and found the question is asked in thiswindow.takecloseevent in the
parent call. So I worked up this little template:

#!--------------------------------------------------------------------------
---
#EXTENSION(ChildUpdateCancelWarning,'Force Cancel-Warning if Child record
modified'),PROCEDURE
#LOCALDATA
LOC:ChildRecordModified  Byte
#ENDLOCALDATA
#AT (%WindowManagerMethodCodeSection,'Init','(),BYTE'),LAST
  LOC:ChildRecordModified = 0
#Endat
#AT(%WindowManagerMethodCodeSection,'Run','(USHORT Number,BYTE
Request),BYTE'),Priority(8000)
  IF (GlobalResponse = RequestCompleted) THEN
    LOC:ChildRecordModified = 1
  END
#Endat
#AT
(%WindowManagerMethodCodeSection,'TakeCloseEvent','(),BYTE'),Priority(2500)
  IF (LOC:ChildRecordModified) AND (Self.CancelAction <> Cancel:Cancel) THEN
    IF (Self.Errors.Throw(MSG:ConfirmCancel) = Level:Cancel) THEN
      SELECT(Self.FirstField)
      Return Level:Notify
    ELSE
      Self.CancelAction = Cancel:Cancel   ! Don't ask again
    END
  END
#Endat
#!--------------------------------------------------------------------------
---

I decided against trying to apply it on a global scale, and just made it
something I have to add to each form that suffers from the problem. Also, I
did not take into account the Cancel:Save branch because I never use that
option.

The middle section is based on code from abwindow.tpl. If anyone else can
use this, please feel free to do with it as you please.

> If you already have the flag set, I'd start in the Cancel button's embeds.
> I'd also
> look at closewindow.



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