List of IOResults
One of the following values:
IO_OK
The result was acceptable - no errors.
IO_END
This is returned from ILoad::OpenChunk() when the end of the chunks at a certain level have been reached. It is used as a signal to terminates the processing of chunks at that level.
IO_ERROR
This is returned if an error occurred. Note that the plug-in should not put up a message box if a read error occurred. It should simply return the error status. This prevents a excess of messages from appearing.