Opens a stream for an existing Apple event.
- macOS 10.0+
- Core Services
An existing Apple event. See
AEStream for the Apple event or
NULL if the stream data structures could not be allocated.
Use this function to open a stream and add parameters to an existing Apple event. This function copies any parameters already in the Apple event to the stream prior to returning the
AEStream. When you are done adding parameters, use
AEStream to save them to the Apple event and close the stream.
If there is not enough available storage to complete the operation,
NULL and leaves the Apple event unchanged.