Qt界面布局

继承关系：

qmake:QT += widgets //.pro文件记得加
Inherits：QLayout

栅格布局QGridLayout：

#include <QGridLayout>

    //! [布局]
    QGridLayout *gridLayout = new QGridLayout;
    gridLayout->addLayout(nameLable, 0, 0);
    gridLayout->addLayout(nameInput, 0, 1);
    gridLayout->addLayout(addressLabel, 1, 0);
    gridLayout->addLayout(addressInput, 1, 1);
    //! [布局]

    //! [设置布局]
    this->setLayout(gridLayout);
    //! [设置布局]

水平布局QHorizontalLayout：也叫上下布局

垂直布局QVerticalLayout：也叫左右布局

表单布局QFormLayout：

垂直格子布局QVBoxLayout：

#include <QVBoxLayout>

//构造函数
    //! [实例化垂直格子布局]
    QVBoxLayout *vBoxLayout = new QVBoxLayout(this);
    //! [实例化垂直格子布局]

    //![添加菜单按钮]
    for(int i = 1, n = 5; i <= n; i++){
        QString buttonText(tr("菜单%0").arg(i));
        QPushButton *pushButton = new QPushButton(buttonText, this);
        vBoxLayout->addWidget(pushButton); //添加菜单按钮
    }
    //![添加菜单按钮]

    //![设置布局]
    //this->setLayout(vBoxLayout);
    //![设置布局]

效果图：

水平格子布局QHBoxLayout：

#include <QHBoxLayout>

//构造函数
    //! [实例化布局]
    QHBoxLayout *hBoxLayout = new QHBoxLayout(this);
    //! [实例化布局]

    //! [添加按钮]
    for(int i = 1, n = 5; i <= n; i++){
        QString buttonText(tr("第%0页").arg(i));
        QPushButton *pushButton = new QPushButton(buttonText,this);
        hBoxLayout->addWidget(pushButton);
    }
    //! [添加按钮]

    //! [设置布局]
    //this->setLayout(hBoxLayout);
    //! [设置布局]

效果图：