IAnchorInfo 接口

定义

提供将批注与相应的批注对象相匹配的功能。Provides the capabilities for matching annotations with the corresponding annotated objects.

public interface class IAnchorInfo
public interface IAnchorInfo
type IAnchorInfo = interface
Public Interface IAnchorInfo

示例

请考虑一个具有注释窗格的简单文档读取器应用程序。Consider a simple document reader application that has a comments pane. 注释窗格可能是一个列表框,用于显示锚定到文档的批注列表的文本。The comments pane might be a list box that displays the text from a list of annotations that are anchored to a document. 如果用户在列表框中选择一项,应用程序将显示相应的批注对象所锚定到的文档段落。If the user selects an item in the list box, then the application brings into view the paragraph in the document that the corresponding annotation object is anchored to.

下面的示例演示如何实现用作注释窗格的此类列表框的事件处理程序:The following example demonstrates how to implement the event handler of such a list box that serves as the comments pane:

void annotationsListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{

    Annotation comment = (sender as ListBox).SelectedItem as Annotation;
    if (comment != null)
    {
        // IAnchorInfo info;
        // service is an AnnotationService object
        // comment is an Annotation object
        info = AnnotationHelper.GetAnchorInfo(this.service, comment);
        TextAnchor resolvedAnchor = info.ResolvedAnchor as TextAnchor;
        TextPointer textPointer = (TextPointer)resolvedAnchor.BoundingStart;
        textPointer.Paragraph.BringIntoView();
    }
}
Private Sub annotationsListBox_SelectionChanged(ByVal sender As Object, ByVal e As SelectionChangedEventArgs)

    Dim comment As Annotation = TryCast((TryCast(sender, ListBox)).SelectedItem, Annotation)
    If comment IsNot Nothing Then
        ' service is an AnnotationService object
        ' comment is an Annotation object
        info = AnnotationHelper.GetAnchorInfo(Me.service, comment)
        Dim resolvedAnchor As TextAnchor = TryCast(info.ResolvedAnchor, TextAnchor)
        Dim textPointer As TextPointer = CType(resolvedAnchor.BoundingStart, TextPointer)
        textPointer.Paragraph.BringIntoView()
    End If
End Sub

属性

Anchor

获取批注的定位点。Gets the anchor of the annotation.

Annotation

获取批注对象。Gets the annotation object.

ResolvedAnchor

获取表示树中解析 Anchor 的位置的对象。Gets the object that represents the location on the tree where the Anchor is resolved.

适用于

另请参阅