ArcGIS Developer Help

IGraphicAttributes Interface

Provides access to members that control the graphic attributes. Note: the IGraphicAttributes interface has been superseded by IGraphicAttributes2. Please consider using the more recent version.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

IGraphicAttributes has methods that define a list of graphic attributes for a number of objects such as GeometricEffects, MarkerPlacements, BasicSymbols including BasicMarkerSymbol, BasicFillSymbol and BasicMarkerSymbol, FillPatterns including SolidColorPattern, GradientPattern and LinePattern.

The following enumerations contain all graphic attributes for the above objects: esriGeometricEffectAttributes, esriGraphicAttribute and esriMarkerPlacementAttributes

When To Use

Use IGraphicAttributes interface for making overrides to the graphic attributes of either Basic Symbols, Geometric Effects, Marker Placements, Fill Patterns or for custom created objects.

Members

	Name	Description
	ClassName	Class name of the graphic attribute.
	GraphicAttributeCount	Number of graphic attributes.
	ID	ID of graphic attributes.
	IDByName	ID of the graphic attribute, given its name.
	Name	Name of the graphic attribute.
	Type	Type of the graphic attribute.
	Value	Value of the graphic attribute. To erase override, set value to NULL or to original value.

Classes that implement IGraphicAttributes

Classes	Description
BasicMarkerSymbol	Basic marker symbol object.
GeometricEffectAddControlPoints	Assigns control point status to line vertices.
GeometricEffectArrow	Constructs an arrow of a given line.
GeometricEffectBuffer	Constructs a buffer polygon from any type of geometry.
GeometricEffectCut	Produces a shorter line based on distances at extremities.
GeometricEffectDash	Generates a dashed/dotted line based on a template.
GeometricEffectDonut	Inserts a hole into a polygon.
GeometricEffectEnclosingPolygon	Constructs enclosing polgon. With multipoint input, constructs a polygon that encloses all points.
GeometricEffectExtension	Extends a line by a given distance and deflection angle.
GeometricEffectJog	Constructs an Jog effect on a given line.
GeometricEffectMove	Applies a move transformation to a geometry.
GeometricEffectOffset	Offsets a line by a specified distance.
GeometricEffectOffsetTangent	Moves a line a given distance in the direction of one of its outermost segments.
GeometricEffectRadial	Produces a line from a point, based on direction and length.
GeometricEffectRegularPolygon	Creates a regular polygon from a point.
GeometricEffectReverse	Reverses the direction of a line.
GeometricEffectRotate	Applies a rotate transformation to a geometry.
GeometricEffectScale	Applies a scale transformation to a geometry.
GeometricEffectSimplify	Simplifies a geometry by eliminating vertices.
GeometricEffectSmooth	Smooth a geometry by approximation with beziers.
GeometricEffectSuppress	Suppresses part of a line or polygon outline.
GeometricEffectTaperedPolygon	Creates a taper polygon from a line.
GeometricEffectWave	Creates a regular wave from a curve.
GradientPattern	A gradient fill pattern object.
LinePattern	A line fill pattern object.
LineStroke	A line stroke object.
MarkerPlacementAlongLine	Places markers along a line.
MarkerPlacementAtExtremities	Places a marker on each extremity of a line.
MarkerPlacementDecoration	Places markers as line decorations.
MarkerPlacementInsidePolygon	Places markers in a polygon.
MarkerPlacementOnLine	Places one marker along a line.
MarkerPlacementOnPoint	Places a marker on a point.
MarkerPlacementOnVertices	Places markers on curve vertices.
MarkerPlacementPolygonCenter	Places one marker at the center of a polygon.
MarkerPlacementRandomAlongLine	Places markers randomly along a line.
MarkerPlacementRandomInPolygon	Places markers randomly within a polygon.
MarkerPlacementVariableAlongLine	Places markers with variable size along a line.
SolidColorPattern	A solid color pattern object.

Remarks

IGraphicAtributes interface must to be implemented by a custom marker placement, geometric effect or fill pattern.

ClassName defines the name of the object for which the attributes are listed.

ClassName will return the name of the Class object implementing this interface. For all Marker Placements, this property will return the type of the marker placement. For example, for a MarkerPlacementOnPoint, ClassName property will return a string "OnPoint". Similarly, use this interface for retreiving the class names for all types of FillPatterns and GeometricEffects Classes as well.

GraphicAttributeCount is a long and indicates the total numer of attributes present for a particular object. ID is a long and indicates the unique identifier of the attribute. Name is a string that indicates the name of the attribute. Type references to an object implementing IGraphicAttributeType. Use IGraphicAttributeType.Type property to determine the type from the following enumeration esriGraphicAttributeType. Value is a variant that can be used to either set or retrieve value from the attribute.

ID, Name, Type, IDByName and Value are methods that define each individual attribute within the graphic attributes list.

GeometricEffectOffset is a geometric effect used to offset line or polygon geometries by an offset distance. The ClassName for this object is Offset Curve and it consists of a single attribute with ID equal to 0 and name as Offset. The Attribute type is esriAttributeTypeDouble.

The following VB code explains the usage of this interface.