`TCustomVLCMediaPlayer`
pt		OnMediaChanged
pt		OnNothingSpecial
pt		OnBackward
pt		OnBuffering
pt		OnEOF
pt		OnError
pt		OnForward
pt		OnOpening
pt		OnPause
pt		OnPlaying
pt		OnStop
pt		OnLengthChanged
pt		OnTimeChanged
pt		OnPausableChanged
pt		OnPositionChanged
pt		OnSeekableChanged
pt		OnTitleChanged
pt		OnSnapshot