pinvoke.net: Edit: shell32.SHQueryUserNotificationState

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Summary: The SHQueryUserNotificationState API

!!!!C# Signature:
 [DllImport("shell32.dll")]
 static extern int SHQueryUserNotificationState(
     out QUERY_USER_NOTIFICATION_STATE pquns);
!!!!VB Signature:
 Declare Function SHQueryUserNotificationState Lib "shell32.dll" (TODO) As int
!!!!User-Defined Types:
 enum QUERY_USER_NOTIFICATION_STATE
 {
     QUNS_NOT_PRESENT = 1,
     QUNS_BUSY = 2,
     QUNS_RUNNING_D3D_FULL_SCREEN = 3,
     QUNS_PRESENTATION_MODE = 4,
     QUNS_ACCEPTS_NOTIFICATIONS = 5,
     QUNS_QUIET_TIME = 6 
 };

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

!!!!Notes:
None.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
 void Main()
 {
	Console.WriteLine("user notification state: {0}", QueryUserNotificationState.State());	
 }

// Define other methods and classes here
 class QueryUserNotificationState
 {
        public enum UserNotificationState
        {
            /// <summary>
            /// A screen saver is displayed, the machine is locked,
            /// or a nonactive Fast User Switching session is in progress.
            /// </summary>
            NotPresent = 1,

/// <summary>
            /// A full-screen application is running or Presentation Settings are applied.
            /// Presentation Settings allow a user to put their machine into a state fit
            /// for an uninterrupted presentation, such as a set of PowerPoint slides, with a single click.
            /// </summary>
            Busy = 2,

/// <summary>
            /// A full-screen (exclusive mode) Direct3D application is running.
            /// </summary>
            RunningDirect3dFullScreen = 3,

/// <summary>
            /// The user has activated Windows presentation settings to block notifications and pop-up messages.
            /// </summary>
            PresentationMode = 4,

/// <summary>
            /// None of the other states are found, notifications can be freely sent.
            /// </summary>
            AcceptsNotifications = 5,

/// <summary>
            /// Introduced in Windows 7. The current user is in "quiet time", which is the first hour after
            /// a new user logs into his or her account for the first time. During this time, most notifications
            /// should not be sent or shown. This lets a user become accustomed to a new computer system
            /// without those distractions.
            /// Quiet time also occurs for each user after an operating system upgrade or clean installation.
            /// </summary>
            QuietTime = 6
        };
	
	[DllImport("shell32.dll")]
	static extern int SHQueryUserNotificationState(out UserNotificationState userNotificationState);
	
	public static UserNotificationState State()
	{
		UserNotificationState state;
		var returnVal = SHQueryUserNotificationState(out state);
		
		return state; 
	}
 }

Documentation: SHQueryUserNotificationState@msdn on MSDN