"Walter B. Rader" <wrader@OCF.Berkeley.EDU> writes:

> I'm getting a vague error message when trying to compile my project in
> OCaml.  The summary of the error message is in the subject of the message,
> again summarized here:
> 
> "The abbreviation widgetBase expands to type ...
>  but is used with type..."
> 
> (Full text appears below.)  The error apparenty appears on line 140, which
> is the start of the definition of the class.  Therefore, I have no idea
> where I'm using the class incorrectly.
> 
> Any suggestions?

Yes, you should look the difference between the two 

< add_widget : widgetBase -> int -> int -> bool -> int -> unit;
  ...
  widgetWasMoved : widgetInfo -> unit >

there should be some. And you will find more precisely where is the
mistake. You should also look to the reference to self in the class
definition... 

-- 
Rémi Vanicat
vanicat@labri.u-bordeaux.fr
http://dept-info.labri.u-bordeaux.fr/~vanicat
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