In GTK+ we have a gpointer (called user_data) associeted with signal
handlers that are specificated in the signal association. So, its a
per-association value. How to have something like this in GTKMM (libsig++).
The following code don´t work:
Gtk::MenuItem * tmp_item;
refXml->get_widget("mn_add_dvd", tmp_item);
(tmp_item)->signal_activate().connect( sigc::bind( sigc::slot (*this,
app::cb_menu_click, "test")));
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