IAnnotationFeature Interface

Provides access to members that control the annotation feature.

Product Availability

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

When To Use

The IAnnotationFeature interface maintains information about an annotation feature.

Members

		Description
	Annotation	The annotation element for the feature.
	LinkedFeatureID	Feature ID.

CoClasses that implement IAnnotationFeature

CoClasses and Classes	Description
AnnotationFeature	An ESRI annotation feature.

Remarks

The IAnnotationFeature interface is used for relating annotation features to other features or updating the graphic of the annotation. The Annotation property will accept any object implementing IGraphicElement. If a TextElement is used, you may reference an exiting TextSymbol stored in the SymbolCollection of the AnnotationFeatureClassExtension by using the ISymbolCollectionElement interface. It is highly recommended that you reference symbols in the SymbolCollection when storing TextElements in an annotation feature class. See the help for ISymbolCollectionElement for more details on this storage system.

The LinkedFeatureID property is used to indicate which feature the annotation is linked to for feature-linked annotation. If the feature is not linked, the property will be -1.

After updating the either of these properties, the IFeature::Store method must be called.

[Visual Basic 6.0]

The following code sample demonstrates how to update the text of an AnnotationFeature:

Public Sub UpdateText(pAnnoFeature As IAnnotationFeature)
Dim pElement As IElement
Set pElement = pAnnoFeature.Annotation

If TypeOf pElement Is ISymbolCollectionElement Then
    'use ISymbolCollectionElement for efficient annotation updates editing
    Dim pSymbolCollectionElement As ISymbolCollectionElement
    Set pSymbolCollectionElement = pElement
    pSymbolCollectionElement.Text = "Foo"
    pAnnoFeature.Annotation = pElement
    Dim pFeature As IFeature
    Set pFeature = pAnnoFeature
    pFeature.Store
End If
End Sub