Qt笔记十五：如何实现颜色的渐变？
QLinearGradient linearGrad(QPointF(200,0),QPointF(1000,0));
linearGrad.setColorAt(0,Qt::blue);//渐变的过程
linearGrad.setColorAt(1,Qt::white);
QFont font("隶书",40);
QPainterPath textPath;
textPath.addText(100,100,font,tr("深圳市亚泰光电技术有限公司"));
painter.setBrush(linearGrad);
painter.drawPath(textPath);
