Kernrechtsfrage
Whether the appellant had standing to challenge the cantonal non-entry decision despite having waived the criminal complaint.
Extrahierter Entscheid
No. By clearly renouncing the filing of a criminal complaint and confirming that renunciation in writing, he definitively expressed disinterest in prosecution and did not participate as a private prosecutor.
Extrahierte Begründung
A private prosecutor must express participation in the criminal proceeding. The complaint is equivalent to such declaration, but the appellant's explicit waiver under Art. 30(5) StGB meant he was not a private complainant and therefore lacked standing under Art. 81 BGG.