QT常用备注

//居中显示
    label->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);
   //消除边框
   label->setStyleSheet("background:transparent;border-width:0;border-style:outset");
    //背景颜色填充
    label->setStyleSheet("background:transparent;border:2px solid blue;");
    //背景颜色
   Line->setStyleSheet("background: rgb(250,250,250)");
    Line->setStyleSheet("background: rgb(20,250,250);border-radius: 3px;border-width: 1px;border-color: transparent");
    依次为背景颜色、边框圆角设置、边框宽度设置、边框颜色透明设置