Return Value (DCIStatus) - returns

      dciGetData returns one fo the following values:

      DCI_SUCCESS

        The DCIReturn structure has been written to the output buffer.
      DCI_NOTINITIALIZED
        The requester has not yet initialized the DCI.
      DCI_SYSERROR
        A internal error has occurred (such as a shortage of resources) that may be beyond the control of the application.
      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.
      DCI_BADHANDLE
        The handle provided is not curretly open.

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