DropIndicator stylesheet missing

class CCustomProxyStyle : public QProxyStyle
{
public:

	virtual void drawPrimitive( PrimitiveElement Element, const QStyleOption* Option, QPainter* Painter, const QWidget* Widget ) const override
	{
		if( Element == QStyle::PE_IndicatorItemViewItemDrop )
		{
			// Create the pen.
			Painter->setPen( QPen( Option->palette.highlight().color().light(), 1 ) );
			Painter->setBrush( Qt::transparent );

			// Check the rect height.
			if( Option->rect.height() == 0 )
				Painter->drawLine( Option->rect.topLeft(), Option->rect.bottomRight() );
			else
				Painter->drawRect( Option->rect.x(), Option->rect.y(), Option->rect.width() - 1, Option->rect.height() - 1 );
		}
		else
		{
			QProxyStyle::drawPrimitive( Element, Option, Painter, Widget );
		}
	}
};