ITransformProperty Interface
The ITransformProperty interface describes an effect or transition property. It wraps a param XML element (or equivalent custom parameter element) in the XML initialization file. To add a new property to the collection, call ITransformPropertiesConfig::CreateProperty.
To examine any child properties, you can query this interface for ITransformProperties. If the property has no children, the retrieved interface will report no elements.
In addition to the methods inherited from IUnknown, the ITransformProperty interface exposes the following methods.
| Method | Description |
| AddPoint | Adds a data point to the property. |
| CalcValueAtTime | Calculates the property value at a particular time, using the evaluation function type that was specified for the property. |
| Clone | Creates a duplicate ITransformProperty interface. |
| get_EvaluationFunction | Retrieves the evaluation function used for a transform. |
| get_Name | Retrieves the name of a property. |
| get_Point | Retrieves a point by index. |
| get_PointCount | Retrieves a count of time points in the current property. |
| get_Type | Retrieves the data type of the property value, as a VARTYPE. |
| put_EvaluationFunction | Specifies the evaluation function that is used to calculate intermediary data between property points. |
| SetValueAtTime | Specifies a property value at a particular time. |
See Also