Pitney Bowes MapXtreme - Manual (Page 253)

Chapter 12: Adding Mapping Capability to Your Applications
Feature Style Modifiers
MapXtreme v7.1 260 Developer Guide
FeatureStyleModifier
This is an abstract base class from which all modifiers must derive. The IndividualValue, Ranged,
and DotDensity themes are all FeatureStyleModifier objects. You can create your own class that
derives from FeatureStyleModifier and override the Modify() method.
FeatureStyleModifiers
The FeatureStyleModifiers class is an ordered collection of FeatureStyleModifier objects contained
within each FeatureLayer. Each modifier in the collection is called in order before a feature’s
geometry is drawn.
FeatureOverrideStyleModifier
The FeatureOverrideStyleModifier is a simple kind of FeatureStyleModifier. This class provides style
override functionality at the Layer level. The FeatureOverrideStyleModifier has a composite style
and implements the IVisibilityConstraint. This is similar to functionality found in MapX and MapInfo
Professional.