Method paintEvent

src/gui/widgets/TrackLabelButton.cpp:191–210

void TrackLabelButton::paintEvent( QPaintEvent * _pe )
{
	if( m_trackView->getTrack()->type() == Track::InstrumentTrack )
	{
		InstrumentTrack * it =
			dynamic_cast<InstrumentTrack *>( m_trackView->getTrack() );
		const PixmapLoader * pl;
		if( it && it->instrument() &&
			it->instrument()->descriptor() &&
			( pl = it->instrument()->descriptor()->logo ) )
		{
			if( pl->pixmapName() != m_iconName )
			{
				m_iconName = pl->pixmapName();
				setIcon( pl->pixmap() );
			}
		}
	}
	QToolButton::paintEvent( _pe );
}