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ArcObjects namespaces > Controls > ESRI ArcGIS Controls > Interfaces > IM > IMapControl3 Interface > IMapControl3.TrackPolygon Method (ArcObjects .NET 10.4 SDK) |
Rubber-bands a polygon on the MapControl.
[Visual Basic .NET] Public Function TrackPolygon ( _ ) As IGeometry
[C#] public IGeometry TrackPolygon ( );
[C++]
HRESULT TrackPolygon(
IGeometry** polygon
);
[C++]
Parameters polygon [out, retval]
polygon is a parameter of type IGeometry
TrackPolygon returns a geometry object that implements IPolygon.
Use the TrackPolygon method within the IMapControlEvents2::OnMouseDown event to rubberband a user defined polygon. The IMapControlEvents2::OnMouseMove event will be triggered during the track, but no IMapControlEvents2::OnMouseUp event will occur. The ESC key on the keyboard can be used during the track to cancel the TrackPolygon.
Calling ITopologicalOperator::Simplify on the digitized polygon will ensure that it is topologically correct.
IMapControl3 Interface | IMapControl4.TrackCircle Method | IMapControl3.TrackCircle Method | IMapControl2.TrackCircle Method | IMapControl2.TrackLine Method | IMapControl3.TrackLine Method | IMapControl4.TrackLine Method | IMapControl3.TrackRectangle Method | IMapControl4.TrackRectangle Method | IMapControl2.TrackRectangle Method