I understand you want to close uifigure after pressing escape key.
For that you can set the KeyPressFcn property of the uifigure as a function eg. keycall
and then check if the pressed key is escape, if it is then you can use close() command.
a = uifigure;
set(a,'KeyPressFcn',@keycall)
function keycall(a, e)
if isequal(e.Key, 'escape')
close(a);
end
end
