ArcGIS Developer Help  (ESRI.ArcGIS.Display)  

VisibleBoundsUpdatedEventHandler Delegate

Represents the method that handles the VisibleBoundsUpdated event.
[Visual Basic .NET]
Public Delegate Sub VisibleBoundsUpdatedEventHandler ( _
    ByVal sender As IDisplayTransformation, _
    ByVal sizeChanged As Boolean _
)
[C#]
public delegate void VisibleBoundsUpdatedEventHandler (
    IDisplayTransformation sender,
    bool sizeChanged
);