pixbuf to pixmap issues

["Zane C.B." <v velox vvelox net>]

Any suggestions on what is wrong with this? I keep getting the error
'Gdk-CRITICAL **: gdk_screen_list_visuals: assertion `GDK_IS_SCREEN
(screen)''. The line is erroring is 'my ($pixmap,
$mask)=$pixbuf->render_pixmap_and_mask(0);'.




my $screen=Gtk2::Gdk::Screen->new;
my $window=$screen->get_root_window;
my $pixbuf=Gtk2::Gdk::Pixbuf->new_from_file($file);
my ($pixmap, $mask)=$pixbuf->render_pixmap_and_mask(0);
$window->set_back_pixmap ($pixmap);

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