NB: More recent documentation for Dyalog APL is available at https://docs.dyalog.com/20.0/.
Description
This method is used to obtain the name of the object that currently has the input focus.
The GetFocus method is niladic.
The result is a simple character vector. An empty result indicates that no Dyalog APL GUI object has the input focus.
See also: GetFocusObj.