arcengine 放大到选择集，Zoom to selected features using ArcObject

In ArcMap you can zoom to the selected features for a layer by right-clicking the layer and selecting Selection > Zoom to Selected Features. This article shows how to do this task using VBA and ArcObjects.

 

Procedure

1. Start ArcMap.
2. Create a new UIButtonControl.
   
3. Right-click the UIButtonControl and select View Source.
4. Copy this code into the
   
   <!-- <br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->Private Sub UIButtonControl1_Click()Sub UIButtonControl1_Click()
     Dim pDoc As IMxDocument
     Set pDoc = ThisDocument
     Dim pMap As IMap
     Set pMap = pDoc.FocusMap
   
     Dim pLayer As IFeatureLayer
     Dim pFSel As IFeatureSelection
     Set pLayer = pMap.Layer(0)
     Set pFSel = pLayer
   
     'Get the selected features
     Dim pSelSet As ISelectionSet
     Set pSelSet = pFSel.SelectionSet
   
     Dim pEnumGeom As IEnumGeometry
     Dim pEnumGeomBind As IEnumGeometryBind
   
     Set pEnumGeom = New EnumFeatureGeometry
     Set pEnumGeomBind = pEnumGeom
     pEnumGeomBind.BindGeometrySource Nothing, pSelSet
   
     Dim pGeomFactory As IGeometryFactory
     Set pGeomFactory = New GeometryEnvironment
   
     Dim pGeom As IGeometry
     Set pGeom = pGeomFactory.CreateGeometryFromEnumerator(pEnumGeom)
   
     pDoc.ActiveView.Extent = pGeom.Envelope
     pDoc.ActiveView.Refresh
   
   End Sub
   's click event.