The DCIReturn structure has been written
to the output buffer.
DCI_SYSERROR
A
internal error has occurred (such as a shortage of resources) that may be
beyond the control of the application.
DCI_NOTINITIALIZED
The DCI subsystem is not currently initialized.
DCI_INVALIDARG
One of the
input arguments is invalid. For example, a negative value was used for numIds
or bufferSize. Also, either metricIdList could not be read or buffer could
not be written.