Qt布局管理器

布局管理器

利用布局管理器做出如下界面效果（标签与输入框设置伙伴关系）：

 
 
新建桌面应用程序，项目名TestLayout，基类QWidget,类名Widget,不勾选创建界面。

#include "widget.h"
#include <QApplication>
#include <QLabel>
#include <QLineEdit>
#include <QFormLayout>
#include <QFont>
#include <QRadioButton>
#include <QPushButton>
#include <QSpacerItem>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QDebug>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    QFont font;
    font.setFamily("黑体");
    font.setPixelSize(14);

    QLabel *nameLabel = new QLabel("姓名: (&N)");
    QLabel *ageLabel = new QLabel("年龄: (&A)");
    QLabel *emaiLabel = new QLabel("邮箱: (&E)");
    QLabel *addrLabel = new QLabel("地址: (&R)");
    QLabel *sexLabel = new QLabel("性别: ");

    QLineEdit *nameEdit = new QLineEdit;
    QLineEdit *ageEdit = new QLineEdit;
    QLineEdit *emaiEdit = new QLineEdit;
    QLineEdit *addrEdit = new QLineEdit;

    //设置伙伴关系
    nameLabel->setBuddy(nameEdit);
    ageLabel->setBuddy(ageEdit);
    emaiLabel->setBuddy(emaiEdit);
    addrLabel->setBuddy(addrEdit);

    //表单布局
    QFormLayout *layout = new QFormLayout(&w);
    layout->addRow(nameLabel, nameEdit);
    layout->addRow(ageLabel, ageEdit);
    layout->addRow(emaiLabel, emaiEdit);
    layout->addRow(addrLabel, addrEdit);

    //设置单选按钮布局
    QFormLayout *sexLayout = new QFormLayout;
    QRadioButton *radiMan = new QRadioButton("男");
    QRadioButton *radiWoMan = new QRadioButton("女");
    sexLayout->addRow(radiMan, radiWoMan);  //先将按钮添加到一行里
    layout->addRow(sexLabel, sexLayout);    //再添加到主布局里


    QHBoxLayout *hLayout = new QHBoxLayout;
    QPushButton *pushBut = new QPushButton("确定");
    QSpacerItem *hspacer = new QSpacerItem(150,20); //间隙
    hLayout->addItem(hspacer);      //添加间隙
    hLayout->addWidget(pushBut);    //添加按钮

    layout->addRow(hLayout);
    layout->setSpacing(15);     //设置控件与控件间隙
    layout->setMargin(15);      //设置控件布局与窗体间隙


    w.setFont(font);
    w.show();

    qDebug() << w.height();
    qDebug() << w.width();

    return a.exec();
}

最终运行效果