ArcGIS Developer Help  (ESRI.ArcGIS.Animation)  

BeforeFrameEventHandler Delegate

Represents the method that handles the BeforeFrame event.
[Visual Basic .NET]
Public Delegate Sub BeforeFrameEventHandler ( _
    ByVal relativeTime As Double _
)
[C#]
public delegate void BeforeFrameEventHandler (
    double relativeTime
);