void gtkbutton::pressed	(gtkbutton *,
                       	 gpointer);
void gtkbutton::released	(gtkbutton *,
                        	 gpointer);
void gtkbutton::clicked	(gtkbutton *,
                       	 gpointer);
void gtkbutton::enter	(gtkbutton *,
                     	 gpointer);
void gtkbutton::leave	(gtkbutton *,
                     	 gpointer);