// pData points to an externally allocated memory block
// created using the size returned by GetDataSize()
// if pData is NULL, or there are no files, return
if ( !pData || m_filenames.GetCount() == 0 )
// pData points to an externally allocated memory block
// created using the size returned by GetDataSize()
// if pData is NULL, or there are no files, return
if ( !pData || m_filenames.GetCount() == 0 )