GKGameCenterViewControllerMBS.StateAchievements = 1

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible values for the viewState property.

Indicates that the view controller presents achievements content.
Available on Mac OS X 10.8.2 and newer.

GKGameCenterViewControllerMBS.StateChallenges = 2

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible values for the viewState property.

Indicates that the view controller presents challenges content.
Available on Mac OS X 10.8.2 and newer.

GKGameCenterViewControllerMBS.StateDefault = -1

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible values for the viewState property.

Indicates that the view controller should present the default screen.
Available on Mac OS X 10.8.2 and newer.

GKGameCenterViewControllerMBS.StateLeaderboards = 0

Type	Topic	Plugin	Version
const	GameKit	MBS MacFrameworks Plugin	13.0

Possible values for the viewState property.

Indicates that the view controller presents leaderboard content. The leaderboardCategory and leaderboardTimeScope properties affect the appearance of this view state.
Available on Mac OS X 10.8.2 and newer.