Gtk2-Ex-Xor offers a couple of add-on features for widgets in Gtk2-Perl with XOR drawing.
Gtk2::Ex::CrossHair— horizontal and vertical lines as a visual guide; read more in the online man page (13k, html).
Gtk2::Ex::Lasso— user selection of a rectangular area; read more in the online man page (14k, html).
Gtk2-Ex-Xor-22.tar.gz(87k, and sig)
libgtk2-ex-xor-perl_22-1_all.deb(45k, and sig)
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