IActiveView.Extent Property

The visible extent rectangle.

[Visual Basic .NET]
Public Property Extent As IEnvelope

[C#]
public IEnvelope Extent {get; set;}

[C++]
HRESULT get_Extent(
  IEnvelope** Extent
);

[C++]
HRESULT put_Extent(
  IEnvelope* Extent
);

[C++]
Parameters
Extent [out, retval]
  Extent is a parameter of type IEnvelope
Extent [in]
  Extent is a parameter of type IEnvelope

Product Availability

Remarks

The Extent property holds the visible area of the view.  The Extent is automatically captured whenever the view's transformation changes.  For example, when the active view is a Map, the Extent is modified whenever the spatial reference changes.  Also, the Extent is set the first time a layer is added to a Map.  In layout view, the Extent is initially set to the page size.  In both layout view and data view, zooming in our out changes the Extent. 

The Extent is always adjusted to fit the device frame and it is persisted in the map document.

See Also

IActiveView Interface | IActiveView.Extent Property | IDisplayTransformation.FittedBounds Property | IDisplayTransformation.VisibleBounds Property | IFeatureClassManage.UpdateExtent Method | IFeatureClassManage Interface | ITin.Extent Property