Is there a way to check to see if the user is currently idle? | There is some documentation on the internet that shows that Windows changes the behavior of the NotifyIcon.BalloonTipShown command if the user is currently idle and this is [detected by checking for keyboard and mouse events](http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=343411&SiteID=1). I am currently working on an application that spends most of its time in the system tray, but pop-ups up multiple balloon tips from time to time and I would like to prevent the user from missing any of them if they are currently away from the system. Since any currently displayed balloon tips are destroyed if a new one is displayed, I want to hold off on displaying them if the user is away.


As such, is there any way to check to see if the user is currently idle if the application is minimized to the system tray?