Are there any restrictions on using the VLI from different Windows NT threads?
Yes. You need to be sure not to use one VLI object from two threads concurrently. For example, if one thread is changing VLIContext parameters and rendering with that context while a second thread is doing the same with the same VLIContext, the results are indeterminate. The VLIVolume class does have access controls that can be useful in serializing access, but these may not be sufficient for application purposes.
