I'm totally new to AppKit. I'm so confused about managing layout of AppKit views.
I have a view which frame is 450*300
and I added an outline view in the view but it has one pixel inset automatically added.
This makes a one pixel border and it makes me annoying.
I can't fix it at all. There's no options about insets, constraints and resizing frame. What I wanna do is just making outline view's size the same as the super view's size so that there's no tiny border.