default button on OS X

[Yves COPPE]

Hello,

I make a push btn and look at the inspector "Basic prop"

When I use a btn and ask "default btn" on OS X
this btn flashes a little to invite the user for clicking : GREAT

BUT
there is a square round the button and when I build my app this square 
is black ! NOT GREAT

I've tried  with the check btn of the palette "inspector" to make the 
quare disappear without success.
`
Has anyone a idea ?

Thanks.

Greetings.
Yves COPPE

yvescoppe at skynet.be