# opcode > [HTML Version](opcode_auicontrol.htm) _Updated November 2013; added opcodes 13, 14Para_ Parameter _opcode_ specifies one of the "methods" or operations from the following table. | **Symbol** | **Value ** | **Description** | |------|------|------| | CTLOP\_INFO | 0 | [Query Control](querycontrol.htm.md) | | CTLOP\_ADD | 1 | [Add Control](addcontrol.htm.md) | | CTLOP\_CHG | 2 | [Change Control](changecontrol.htm.md) | | CTLOP\_DEL | 3 | [Delete](delete_control.htm.md) | | CTLOP\_CLR | 4 | [Clear Control](clear_control.htm.md) | | CTLOP\_QRYCB | 5 | [Query Checkbox](querycheckbox.htm.md) or [Retrieve Date from Month Calendar Control](operationsmoncalctrl.htm.md) | | CTLOP\_SVA, CTLOP\_RSA | 6, 7 | [Save/Restore Controls](saverestorecontrols.htm.md) | | CTLOP\_SBCH, CTLOP\_EBCH | 8, 9 | [Batch Operations](batchoperations.htm.md) | | CTLOP\_GETID | 10 | [Get Control ID](get_control_id.htm.md) | | CTLOP\_PANE | 11 | [Set Current Tab Pane](setcurrenttabpane.htm.md) | | CTLOP\_REPL | 12 | Internal use only. | | CTLOP\_IMGLST | 13 | Attach an image list to a toolbar control | | CTLOP\_TABSET, CTLOP\_TABCLR | 14, 15 | [Set/Clear MBF\_TABSTOP Property](setclearmbf_tabstop.htm.md) | | CTLOP\_REPAINT | 16 | Force refresh/redraw of specified control and its children | | **Definition file: [ashell.def](ashell_def.htm.md)** | |