ERRATUM

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))

(gdk::region-get-clipbox var)

The value NIL is not of type SYSTEM-AREA-POINTER.
    [Condition of type TYPE-ERROR]

Restarts:
   0: [ABORT-REQUEST] Abort handling SLIME request.
   1: [ABORT] Exit debugger, returning to top level.

I have the same problem calling the function

(gdk::region-get-rectangles var)

The value NIL is not of type SYSTEM-AREA-POINTER.
    [Condition of type TYPE-ERROR]

Restarts:
   0: [ABORT-REQUEST] Abort handling SLIME request.
   1: [ABORT] Exit debugger, returning to top level.

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