-gboolean map_cb_configure(GtkWidget * widget, GdkEventConfigure * event);
-gboolean map_cb_expose(GtkWidget * widget, GdkEventExpose * event);
-gboolean map_cb_button_press(GtkWidget * widget, GdkEventButton * event);
-gboolean map_cb_button_release(GtkWidget * widget, GdkEventButton * event);
-gboolean map_cb_scroll_event(GtkWidget * widget, GdkEventScroll * event);
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