This .NET class wraps the AcTrayItemBubbleWindowControl ObjectARX class. 

The TrayItemBubbleWindowControl class supports the bubble notification window that is displayed for a tray item in the tray icon area of the status bar. An object of this class is passed to TrayItem.ShowBubbleWindow() to display a bubble notification window.

Autodesk.AutoCAD.Windows.TrayItemBubbleWindow

Public sealed Class TrayItemBubbleWindow
Inherits DisposableWrapper

public sealed class TrayItemBubbleWindow : DisposableWrapper;