Returns the attributes of the composition associated with the renderer.
- macOS 10.5–10.15Deprecated
A dictionary that contains the attributes that describe the composition, including the input and output ports of the root patch.
The dictionary can define any of the attributes that are specified by the composition attribute keys. See
QCComposition, QCCompositionAttributeDescriptionKey, and
The dictionary can also contain dictionaries that correspond to the keys that identify the input and output ports of the root patch of the composition. See QCPortAttributeTypeKey, QCPortAttributeNameKey, QCPortAttributeMinimumValueKey, QCPortAttributeMaximumValueKey, and