Qt QSS 属性选择器使用详解

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);

    QHBoxLayout* mainLayout = new QHBoxLayout;

    QPushButton* confirm = new QPushButton;
    confirm->setText("confirm");
    confirm->setProperty("level", "dangrous");

    QPushButton* cancel = new QPushButton;
    cancel->setText("cancel");
    cancel->setProperty("level", "normal");

    mainLayout->addWidget(confirm);
    mainLayout->addWidget(cancel);

    cancel->setProperty("urgent", true);

    setStyleSheet("QPushButton { color: #FFF; border: 0; height: 30px; width: 100px; }"
                  "QPushButton[level='dangrous'] { background-color: red; }"
                  "QPushButton[level='normal'] { background-color: blue; }");

    this->setLayout(mainLayout);
}