Adjusts to overlap inEnvelope.
[Visual Basic 6.0] Sub Union(
ByVal inEnvelope As IEnvelope _
)
[Visual Basic .NET] Public Sub Union ( _ ByVal inEnvelope As IEnvelope _ )
[C#] public void Union ( IEnvelope inEnvelope );
[Java] public void union ( IEnvelope inEnvelope ) throws IOException, AutomationException
[C++] HRESULT Union( IEnvelope* inEnvelope );
Sets the Envelope equal to the union of the base Envelope and the input Envelope. The XMin and YMin of the resulting Envelope is the minimum XMin and YMin respectively between the base and input Envelopes, and the XMax and YMax of the resulting Envelope is the maximum XMax and YMax respectively between the base and input Envelopes.

IEnvelope Interface | IEnvelope.Intersect Method | IEnvelope.Offset Method | IEnvelope.Expand Method | IEnvelope.CenterAt Method