qt QGridLayout 简单实验1

1.概要

2.实验

2.1 实验1 简单实验+跨行

2.1.1 代码

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>

QT_BEGIN_NAMESPACE
namespace Ui {
class Widget;
}
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

private:
    Ui::Widget *ui;
};
#endif // WIDGET_H

#include "widget.h"
#include "ui_widget.h"
#include <QGridLayout>
#include <QPushButton>

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

    // 创建一个QGridLayout对象
    QGridLayout *layout = new QGridLayout(this);

    // 创建几个按钮
    QPushButton *button1 = new QPushButton("Button 1");
    QPushButton *button2 = new QPushButton("Button 2");
    QPushButton *button3 = new QPushButton("Button 3");
    QPushButton *button4 = new QPushButton("Button 4");
    QPushButton *button5 = new QPushButton("Button 5");
    QPushButton *button6 = new QPushButton("Button 6");

    // 将按钮添加到布局中
    layout->addWidget(button1, 0, 0); // 将button1添加到网格的第0行，第0列
    layout->addWidget(button2, 0, 1); // 将button2添加到网格的第0行，第1列
    layout->addWidget(button6, 0, 2); // 将button2添加到网格的第0行，第1列
    layout->addWidget(button3, 1, 0, 1, 3); // 将button3添加到网格的第1行，跨越第0列到第1列
    layout->addWidget(button4, 2, 0, 1, 1); // 将button4添加到网格的第2行，第0列
    layout->addWidget(button5, 2, 1); // 将button4添加到网格的第2行，第0列
}

Widget::~Widget()
{
    delete ui;
}

2.1.2 运行结果

2.2 实验2 一组控件实验

2.2.1 代码

#ifndef GRITLYOUTS_H
#define GRITLYOUTS_H

#include <QWidget>

namespace Ui {
class GritLyouts;
}

class GritLyouts : public QWidget
{
    Q_OBJECT

public:
    explicit GritLyouts(QWidget *parent = nullptr);
    ~GritLyouts();

private:
    Ui::GritLyouts *ui;
};

#endif // GRITLYOUTS_H

#include "gritlyouts.h"
#include "ui_gritlyouts.h"
#include <QGridLayout>
#include <QPushButton>

GritLyouts::GritLyouts(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::GritLyouts)
{
    ui->setupUi(this);
    // 创建一个QGridLayout对象
    QGridLayout *layout = new QGridLayout(this);
    for(int i=0;i<24;i++){
        QPushButton *button1 = new QPushButton("button_"+QString::number(i)+"");
        int hang = i/4;
        int lie = i%4;
        layout->addWidget(button1, hang, lie);
    }
}

GritLyouts::~GritLyouts()
{
    delete ui;
}

2.2.2 运行结果

2.3 实验的公共代码

2.3.1 工程

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    gritlyouts.cpp \
    main.cpp \
    widget.cpp

HEADERS += \
    gritlyouts.h \
    widget.h

FORMS += \
    gritlyouts.ui \
    widget.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

2.3.2 代码 

#include "widget.h"
#include "gritlyouts.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    //GritLyouts gl;
    //gl.show();
    return a.exec();
}