Date: Tue, 7 Oct 2003 15:46:43 +0200
From: Claudio Sacerdoti Coen <sacerdot at cs.unibo.it>
To: lablgtk at kaba.or.jp
Cc: Luca Padovani <lpadovan at cs.unibo.it>,
        Stefano Zacchiroli <zacchiro@cs.unibo.it>
Subject: Serious problem with switch_page
Message-ID: <20031007134643.GA4505 at cs.unibo.it>
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 Dear lablgtk2-gurus,

 I have spotted a serious error in gtkPack.props.
 The first argument of the switch_page signal is declared to have 
 type GObject. But this is not true: a notebook page in gtk2 is implemented
 as a simple structure and not as a gobject ;-(

 As a consequence, the first time the switch_page is called, a marshal2
 error occurs. (Indeed the error is in the gobject data_conv, since
 it tries to call the glib2 functions to determine the type of the object). 

 I think that the patch would be:

  1. either bind the notebook_page struct in the traditional way
     (best choice)
  2. or put a dummy argument data conversion (Pointer? int? gint?) in place
     of GObject. This should work since (bad feature) you suppress the
     first argument of the switch_page callback in gPack.ml

 Without one of the two patches, the notebook class is not very useful
 at all.


 						Cheers,
						C.S.C.

-- 
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Real name: Claudio Sacerdoti Coen
PhD Student in Computer Science at University of Bologna
E-mail: sacerdot@cs.unibo.it
http://www.cs.unibo.it/~sacerdot
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