GxGeographicView Example

Here, for example, is a VBA method that accesses the geographic view's map (as an IActiveView) and zooms in a fixed amount:

[Visual Basic 6.0]
Public Sub ZoomIn()
  Dim pApp As IGxApplication
  Set pApp = Application

  If Not TypeOf pApp.View Is IGxPreview Then Exit Sub

  Dim pPreview As IGxPreview
  Set pPreview = pApp.View

  If Not TypeOf pPreview.View Is IGxGeographicView Then Exit Sub

  Dim pGeoView As IGxGeographicView
  Set pGeoView = pPreview.View

  Dim pActiveView As IActiveView
  Set pActiveView = pGeoView.Map

  Dim pExtent As IEnvelope
  Set pExtent = pActiveView.Extent
  pExtent.Expand 0.75, 0.75, True
  pActiveView.Extent = pExtent
  pActiveView.Refresh
End Sub

[Visual Basic .NET, C#, C++]
No example is available for Visual Basic .NET, C#, or C++. To view a Visual Basic 6.0 example, click the Language Filter button in the upper-left corner of the page.

EDN: ESRI Developer Network

GxGeographicView Example