Re: ERRATUM

Carlos Agon <[email protected]> writes:

> sorry I used in my last e-mail functions specifics to our software,  
> anyway the problem is the same
> 
> (setf var (gdk::region-new))
> (gdk::region-union-with-rect var (make-gdk-rect 0 0 100 100))

These functions must also be part of your code as they are not in stock
clg.

I am not certain of what you try to accomplish with this code, but the
preferred method to create a region from a rectangle¹ would be:

(make-instance gdk:region :rectangle #(0 0 100 100))

and to make a union between a region and a rectangle:

(gdk:region-union some-region #(0 0 100 100))

All region set operations can be given rectangles as the last argument
(and with the latest code in CVS also as the first argument)
 
> (gdk::region-get-clipbox var)
> 
> The value NIL is not of type SYSTEM-AREA-POINTER.
>     [Condition of type TYPE-ERROR]

Without a backtrace of the stack it is hard to tell what is wrong.

> I have the same problem calling the function
> 
> (gdk::region-get-rectangles var)

I found a small bug in this function that would cause it to return wrong
output and possible seg fault, but not the error you got.

Sorry I couldn't be of more help.


¹Vectors can be used instead of real rectangle objects as arguments to
some functions

-- 
Espen

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