_ModifyFlags
static uint32 _ModifyFlags(uint32 flags, BView* target,
BView(BRect(), name, resizingMode, _ModifyFlags(flags, target, border)),
BView(name, _ModifyFlags(flags, target, border)),
SetFlags(_ModifyFlags(Flags(), fTarget, border));
SetFlags(_ModifyFlags(Flags(), fTarget, border));
SetFlags(_ModifyFlags(Flags(), fTarget, fBorder));