- // IsReadable() is no usable here, because we deal with
- // any kind of gdcm::Readable *document* (no only gdcm::File)
- if (res) {
+
+ // gdcm::File::IsReadable() is no usable here, because we deal with
+ // any kind of gdcm::Readable *document*
+ // not only gdcm::File (as opposed to gdcm::DicomDir)
+ if ( !res ) {