Provides access to members that modify an invalidated area object.
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.
When To Use
To avoid graphical artifacts on the screen, instead of invalidating (refreshing) the entire display each time the rendered objects change, use this interface to create a collection of objects whose envelopes can be invalidated with one call. For example, when rotating features, use Add to add the selected features to the collection, perform the rotate operation, then call Invalidate . The same objects can be added again after the operation so that the new region is also invalidated. In summary, call Invalidate once at the end of an operation to refresh the screen within the envelopes bounding the objects that were added using the Add method.
