$ perl clipboard.pl
$tpath --> ARRAY(0x9e5e740)
$tp --> Gtk3::TreePath=SCALAR(0x9e5e730)
$col0content --> Google
$col1content --> http://www.google.cz/
$clipboard --> Gtk3::Clipboard=HASH(0xa517230)
*** unhandled exception in callback:
***   Gtk3::Clipboard::set_text: passed too few parameters (expected 3, got 2) at clipboard.pl line 91.
***  ignoring at /usr/share/perl5/vendor_perl/Gtk3.pm line 321.
$