QPen pen(Qt::black); pen.setWidth(2); pen.setJoinStyle(Qt::RoundJoin); QPainter painter(this); painter.setPen(pen); painter.drawLine(50,50,100,100);
QPen pen(Qt::black); pen.setWidth(2); pen.setJoinStyle(Qt::BevelJoin); QPainter painter(this); painter.setPen(pen); painter.drawLine(50,50,100,100);This code uses a QPen to draw a line with beveled corners. Package library – Qt library.