Select default button for custom dialog

Idea created by Extensitech on Nov 27, 2015

    Currently, the right-most button is always the default. Instead, it would be nice to be able to identify, say, the second button as the default (which would be selected by hitting enter).


    (Of course, this is subordinate to the need to fix the "esc" problem on windows... let us capture it or ignore it, but "esc" doesn't mean "do whatever the default button does".)


    Chris Cain