1、父窗体样式不生效?
this->setAttribute(Qt::WA_StyledBackground);
2、父窗样式体影响子控件?
this->setStyleSheet("#objname{background-color: rgb(190,190,190)});
3、子控件qlinedit设置透明无边框?
ui->btnLoad->setStyleSheet("background:transparent;border-width:0;border-style:outset");