Subclasses, tied hashes, {get,set}_property, undefined values

[Giuliano <g cioffi tiscali it>]

Dear all,

  I ran into a strange behaviour with Glib::Object::Subclass .
  If I call set_property using a value stored in a tied hash, the
corresponding get_property returns undef. This doesn't happen if 
scalar context is forced when calling set_property.

  Please, see the attached test case.

  If $hashref is a tied hash reference (of course the 'Title'key is
defined):
$w->set_property('title', $hashref->{Title});

  then this returns undef:
$w->set_property('title', $hashref->{Title});

  Whereas the following block returns a defined value:
$w->set_property('title', scalar($hashref->{Title}));
$w->set_property('title', $hashref->{Title});

  Does anyone know why this happens?

thanks for your help,
ciao,
-- 
Giuliano

#!/usr/bin/perl
$i=$j=$r=$b=-16.0;while((print"\n"),$b++<15){foreach$a(0..78){print
+(split //,' .:-;!/>)|&IH%*#')[$k&15];for($i=$k=$r=0;$j=$r*$r-$i*$i
-2+$a/25,$i=2*$r*$i+$b/10,$j*$j+$i*$i<11&&$k++<111;$r=$j){}}}

Attachment: tieprop.pl
Description: Text Data