Qt之QGridLayout布局简单应用

实现A、B、C布局；

结构如图：

关键代码如下：

MainWindow::MainWindow(QWidget *parent) :

    QWidget(parent)

{

        this->setGeometry(QRect(0,0,1000,800));

        QGridLayout *gridLayout = new QGridLayout;

        QWidget *widget1 = new QWidget();

        QPushButton *A = new QPushButton("A",widget1);

        A->setGeometry(QRect(100,100,100,60));

        QWidget *widget2 = new QWidget();

        QPushButton *B = new QPushButton("B",widget2);

        B->setGeometry(QRect(100,100,100,60));

        QWidget *widget3 = new QWidget();

        QPushButton *C = new QPushButton("C",widget3);

        C->setGeometry(QRect(0,10,100,30));

        widget1->setMaximumWidth(300);

        widget1->setMinimumWidth(300);

        widget3->setMaximumHeight(40);

        widget3->setMaximumHeight(40);

        gridLayout->setMargin(0);

        int vW = width()/300;

        int vh = height()/60;

        qDebug() << vW << vh;

        gridLayout->addWidget(widget1, 0,0,5,1);

        gridLayout->addWidget(widget2, 0,1,5-1,5-1);

        gridLayout->addWidget(widget3, 5-1,1,1,5-1);

        gridLayout->setSpacing(1);

        QStringList qss;

        qss.append("QWidget{border:1px solid #000000;background:#DC2520}");

        this->setStyleSheet(qss.join(""));

        setLayout(gridLayout);

}