The most recent version of this documentation can be found at https://docs.dyalog.com/20.0/.
Menu Parents
| ActiveXControl | Calendar | CoolBand |
| CoolBar | DateTimePicker | Form |
| Grid | Menu | MenuBar |
| OLEServer | Root | StatusField |
| SubForm | SysTrayItem | TCPSocket |
| ToolBar | ToolControl |