Create a PointRelativeToPoint object, which is used to define the placement of a ReferencePoint relative to a host point. 
   Namespace:   Autodesk.Revit.Creation  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2013 
Syntax
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| Visual Basic | 
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Parameters
- hostPointReference
-  Type:  Autodesk.Revit.DB Reference  
 The reference of the host point.
Return Value
If creation is successful then a new PointRelativeToPoint object is returned, otherwise an exception with failure information will be thrown.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | Thrown when the input argument hostPointReference is a null reference ( Nothing in Visual Basic) . |