Qt 通过绘画设置边框阴影

时间：2018-03-23 01:00:42 阅读：214 评论：0 收藏：0 [点我收藏+]

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然后重载paintevent
void ShadowMethod::paintEvent(QPaintEvent *event)
{
QPainterPath path;
path.setFillRule(Qt::WindingFill);
path.addRect(10, 10, this->width()-20, this->height()-20);
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.fillPath(path, QBrush(Qt::white));
QColor color(92,93,95,50);
int arr[10] = {150,120,80,50,40,30,20,10,5,5};
for(int i=0; i<10; i++)
{
QPainterPath path;
path.setFillRule(Qt::WindingFill);
if(i == 5)
path.addRect(10-i-1, 10-i-1, this->width()-(10-i)*2, this->height()-(10-i)*2);
else
path.addRoundedRect(10-i-1, 10-i-1, this->width()-(10-i)*2, this->height()-(10-i)*2,2,2);
color.setAlpha(arr[i]);
painter.setPen(color);
painter.drawPath(path);
}
}

[cpp] view plain copy

[cpp] view plain copy

<img src="http://img.blog.csdn.net/20171011165958714?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQveHpwYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="">

https://blog.csdn.net/xzpblog/article/details/78205710

原文地址：https://www.cnblogs.com/findumars/p/8627697.html

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