Register for mouse click events

[TennisChewingHeater]

I'm wiring a plugin for VLC Media Player in C using libVLCCore.
I'm looking at public headers in include/vlc/plugins/vlc_*.h and having hard time finding where and how to register for mouse events. Specifically, I'm interesting in knowing when a user clicks on video image (the area of Qt GUI where video is being displayed).

[TennisChewingHeater]

Okay, I found the way. I would need to create my own "dummy" video filter which would listen for mouse events.