doing a lot of these things the same way as BMenuField are already doing.
Perhaps a private helper class could be refactored from these two controls
to avoid duplicating a lot of this code, although there are a few subtle
differences here and there.
These changes make a BTextControl behave properly in the layout management
frame work, in case CreateLabelLayoutItem() and CreateTextViewLayoutItem()
are _not_ used to layout the BTextControl.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27584 a95241bf-73f2-0310-859d-f6bbb57e9c96