[Gtk2-perl-bugs] [Bug 567659] New: key snooper trap to exception handlers

[gnome-perl (bugzilla.gnome.org) <bug...@bu...>]

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  gnome-perl | Gtk2 | Ver: unspecified
           Summary: key snooper trap to exception handlers
           Product: gnome-perl
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: Gtk2
        AssignedTo: gtk...@li...
        ReportedBy: us...@zi...
         QAContact: gtk...@li...
     GNOME version: Unspecified
   GNOME milestone: Unspecified


The key snooper functions installed by Gtk2->key_snooper_install could
helpfully trap errors through the Glib->install_exception_handler funcs.  The
program below shows how an error in a snooper terminates the whole program.

(A snooper of course is basically an event handler like widget event handlers,
but encompassing all widgets, and on that basis will almost certainly want to
continue the main loop.)


use strict;
use warnings;
use Gtk2 '-init';

Glib->install_exception_handler (sub {
                                   print "exception trapped\n";
                                   return 1;
                                 });
Gtk2->key_snooper_install (sub {
                             print "key snooper runs\n";
                             die "now throw an error";
                           });
my $toplevel = Gtk2::Window->new ('toplevel');
$toplevel->add (Gtk2::Label->new('Press any key'));
$toplevel->show_all;
Gtk2->main;


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