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# NSTouchBar.Constructor Constructor

Constructs NSTouchBar, taking in optional delegate to construct Touch-Bar items.

Constructor(
itemCreator as MakeItemForIdentifierDelegate)

#### Parameters

itemCreator
  This parameter can be set to nil. If passing in delegate here then the delegate will act as live source for adding items to the Touch-.Bar

#### Remarks

Note that you only construct a Touch-Bar in callback delegate from the RegisterForApplication or RegisterForWindow shared methods.
Exception to this is when you are creating Touch Bar to add to the expanded state of a NSPopoverTouchBarItem.

#### See Also

NSTouchBar Class