extern void subsurface_open_conf(void);
extern void subsurface_set_conf(char *name, pref_type_t type, const void *value);
extern const void *subsurface_get_conf(char *name, pref_type_t type);
extern void subsurface_open_conf(void);
extern void subsurface_set_conf(char *name, pref_type_t type, const void *value);
extern const void *subsurface_get_conf(char *name, pref_type_t type);
typedef void (*data_func_t)(GtkTreeViewColumn *col,
GtkCellRenderer *renderer,
GtkTreeModel *model,
typedef void (*data_func_t)(GtkTreeViewColumn *col,
GtkCellRenderer *renderer,
GtkTreeModel *model,