Hi Nenad,
[quote user="Nenad Poljcic"]nd the order they are included.[/quote]
Did you try to include PointCloudClipHandler.h before PointCloudApi.h?
From your screen capture posted earlier it's visible that the first error with missing OrientedBoxCR is reported in PointCloudEdit.h. This header file is included in PointCloudApi.h, but OrientedBoxCR is defined in PointCloudClipHandler.h, which is included later. So even in the case the definition is correct, it's not known to compiler in the time when PointCloudApi.h is included.
With regards,
Jan