except: __print__(dbg.INIT, "main.__init__: current_channel.first_show() initialization error")

      
            # bind gtk/glade event names to functions
            gui_startup(19/20.0)
            self.connect_signals(dict( {
            self.connect_signals(dict( list({
                "gtk_main_quit" : self.gtk_main_quit,                # close window
                # treeviews / notebook
                "on_stream_row_activated" : self.on_play_clicked,    # double click in a streams list
                "on_category_clicked": self.on_category_clicked,     # new selection in category list
                "on_notebook_channels_switch_page": self.channel_switch,   # channel notebook tab changed

                "true": lambda w,*args: True,
                "streamedit_open": streamedit.open,
                "streamedit_save": streamedit.save,
                "streamedit_new": streamedit.new,
                "streamedit_cancel": streamedit.cancel,
            }.items() | self.add_signals.items() ))
            }.items() ) + list( self.add_signals.items() ) ))
            
            # actually display main window
            gui_startup(99/100.0)
            self.win_streamtuner2.show()