{
  IAVIFileImpl *This = (IAVIFileImpl *)iface;

  ULONG nStream;

  TRACE("(%p,0x%08X,%d)\n", iface, fccType, lParam);

  /* check parameter */
  if (lParam < 0)
    return AVIERR_BADPARAM;

  /* Have user write permissions? */
  if ((This->uMode & MMIO_RWMODE) == 0)
    return AVIERR_READONLY;

  nStream = AVIFILE_SearchStream(This, fccType, lParam);

  /* Does the requested stream exist? */
  if (nStream < This->fInfo.dwStreams &&
      This->ppStreams[nStream] != NULL) {
    /* ... so delete it now */
    HeapFree(GetProcessHeap(), 0, This->ppStreams[nStream]);

    if (This->fInfo.dwStreams - nStream > 0)
      memcpy(This->ppStreams + nStream, This->ppStreams + nStream + 1,
         (This->fInfo.dwStreams - nStream) * sizeof(IAVIStreamImpl*));

    This->ppStreams[This->fInfo.dwStreams] = NULL;
    This->fInfo.dwStreams--;
    This->fDirty = TRUE;

    /* This->fInfo will be updated further when asked for */
    return AVIERR_OK;
  } else
    return AVIERR_NODATA;
}

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