deferred class EV_PICK_AND_DROPABLE General cluster: interface description: "Facilities for pick and drop mechanism. Decendents can act both as pick and drop sources and as targets. When the user picks a `pebble' from a source and drops on a target,the `drop_actions' of the target receive the `pebble' as input. The user interface can be either pick and drop or drag and drop,selected by `set_pick_and_drop' and `set_drag_and_drop'." keywords: "pick and drop, drag and drop, source, PND, DND" Ancestors EV_ABSTRACT_PICK_AND_DROPABLE* EV_ANY* EV_PICK_AND_DROPABLE_ACTION_SEQUENCES* Action sequences conforming_pick_actions: EV_NOTIFY_ACTION_SEQUENCE drop_actions: EV_PND_ACTION_SEQUENCE pick_actions: EV_PND_START_ACTION_SEQUENCE pick_ended_actions: EV_PND_FINISHED_ACTION_SEQUENCE pointer_motion_actions: EV_POINTER_MOTION_ACTION_SEQUENCE Queries accept_cursor: EV_POINTER_STYLE data: ANY deny_cursor: EV_POINTER_STYLE id_object (an_id: INTEGER_32): IDENTIFIED is_destroyed: BOOLEAN mode_is_drag_and_drop: BOOLEAN mode_is_pick_and_drop: BOOLEAN mode_is_target_menu: BOOLEAN object_id: INTEGER_32 pebble: ANY pebble_function: FUNCTION [ANY, TUPLE, ANY] pebble_positioning_enabled: BOOLEAN pebble_x_position: INTEGER_32 pebble_y_position: INTEGER_32 target_name: STRING_GENERAL Commands copy (other: [like Current] EV_PICK_AND_DROPABLE) destroy disable_pebble_positioning enable_pebble_positioning remove_pebble set_accept_cursor (a_cursor: [like accept_cursor] EV_POINTER_STYLE) set_data (some_data: [like data] ANY) set_deny_cursor (a_cursor: [like deny_cursor] EV_POINTER_STYLE) set_drag_and_drop_mode set_pebble (a_pebble: [like pebble] ANY) set_pebble_function (a_function: FUNCTION [ANY, TUPLE, ANY]) set_pebble_position (a_x, a_y: INTEGER_32) set_pick_and_drop_mode set_target_menu_mode set_target_name (a_name: STRING_GENERAL) Constraints user interface modes mutually exclusive