Question juridique clé
Whether the complainant had standing to appeal the cantonal decision under Art. 81 LTF.
Solution extraite
He lacked standing because he failed to show potential civil claims affected by the no-prosecution decision, and the complaint did not concern the right to file a criminal complaint.
Motifs extraits
A private complainant must substantiate civil-law consequences of the challenged decision. That showing was absent, so standing under Art. 81(1)(b)(5) LTF was not established; Art. 81(1)(b)(6) LTF also did not apply.