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This document is archived and information here might be outdated. Recommended version. |
IGraphicAttributes Interface (ArcObjects .NET 10.6 SDK)
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This document is archived and information here might be outdated. Recommended version. |
Provides access to members that control the graphic attributes. Note: the IGraphicAttributes interface has been superseded byIGraphicAttributes2. Please consider using the more recent version.
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
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.
| Name | Description | |
|---|---|---|
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ClassName | Class name of the graphic attribute. |
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GraphicAttributeCount | Number of graphic attributes. |
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ID | ID of graphic attributes. |
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IDByName | ID of the graphic attribute, given its name. |
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Name | Name of the graphic attribute. |
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Type | Type of the graphic attribute. |
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Value | Value of the graphic attribute. To erase override, set value to NULL or to original value. |
| CoClasses and 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. |
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.