Qt中的Label和PushButton背景图自动缩放设置

• Label 背景图自动缩放

QPixmap* pixmap = new QPixmap(":/images/HeadIcon/1.png");
pixmap->scaled(ui->label->size(),Qt::KeepAspectRatio);

ui->label->setScaledContents(true);
ui->label->setPixmap(*pixmap);

• PushButton 背景图自动缩放

ui->pushButton->setStyleSheet("border-image: url(:/images/HeadIcon/2.png);");