Defines tri-state boolean values (a value that can be True, False, or Unspecified).

enum TriStateBoolean {
  tsbUnspecified = 0,
  tsbTrue = 1,
  tsbFalse = 2
};

public enum TriStateBoolean {
  tsbUnspecified = 0,
  tsbTrue = 1,
  tsbFalse = 2
}

Public Enum TriStateBoolean
  tsbUnspecified = 0
  tsbTrue = 1
  tsbFalse = 2
End Enum