gtk_icon_view_get_margin
gtk_icon_view_set_item_padding
gtk_icon_view_get_item_padding
+gtk_icon_view_set_activate_on_single_click
+gtk_icon_view_get_activate_on_single_click
gtk_icon_view_get_cell_rect
gtk_icon_view_select_path
gtk_icon_view_unselect_path