Qt 绘制圆角 QWidget

实现功能：使用 image 填充圆角 QWidget

/*QPainter painter(this);
painter.drawImage(0, 0, image); */

QPainter painter(this);

QBrush brush;

/*
If you don't like monochrome image
You are ought to read document about
QBrush::setTextureImage
*/

brush.setTextureImage(QImage(image));

painter.setBrush(brush);

painter.setPen(Qt::black);

painter.drawRoundedRect(this->rect(), 10, 10);