fix 'enter' behavior, support fixed menu
fix 'enter' behavior, support fixed menu

Superordinate/pen,thomas-mcdonald/pen,bushuai/pen,teambition/pen,michalcarson/pen,fritx/pen,thomas-mcdonald/pen,GerHobbelt/pen,GerHobbelt/pen,viki-119/pen,nvoron23/pen,hiBetterMe/pen,michalcarson/pen,nvoron23/pen,bushuai/pen,nishadmenezes/pen,hiBetterMe/pen,fritx/pen,nishadmenezes/pen,Superordinate/pen,viki-119/pen