NB: More recent documentation for Dyalog APL is available at https://docs.dyalog.com/20.0/.

GotFocus Event

ActiveXControl	Animation	Button
ButtonEdit	Calendar	ColorButton
Combo	ComboEx	DateTimePicker
Edit	Form	Grid
Group	List	ListView
MDIClient	ProgressBar	PropertyPage
RichEdit	Scroll	Spinner
SubForm	TrackBar	TreeView