1.相关描述

继承QCheckBox的类MyCheckBox，利用QTableWidget的setCellWidget方式添加MyCheckBox类的对象

2.相关页面

3.相关代码

 mycheckbox.h

#ifndef MYCHECKBOX_H
#define MYCHECKBOX_H#include <QCheckBox>
#include <QObject>class MyCheckBox : public QCheckBox
{
public:MyCheckBox(QWidget *parent = nullptr);void SetID(int id);int GetID();
private:int mId;
};#endif // MYCHECKBOX_H

mycheckbox.cpp

#include "mycheckbox.h"
#include <QDebug>
MyCheckBox::MyCheckBox(QWidget *parent):QCheckBox(parent) {}void MyCheckBox::SetID(int id)
{this->mId = id;
}int MyCheckBox::GetID()
{return mId;
}

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>QT_BEGIN_NAMESPACE
namespace Ui {
class MainWindow;
}
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();
public slots:void recvCheckBox(bool checked);
private:Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H

mainwindow.cpp

#include "checkboxdelegate.h"
#include "mainwindow.h"
#include "mycheckbox.h"
#include "ui_mainwindow.h"#include <QCheckBox>
#include <QDebug>
MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{ui->setupUi(this);ui->tableWidget->setColumnCount(3);ui->tableWidget->setRowCount(3);for(int i = 0; i < 3; i++){MyCheckBox *checkBox = new MyCheckBox();checkBox->setText(QString::number(i+1));QWidget *widget = new QWidget();QHBoxLayout *layout = new QHBoxLayout(widget);layout->addWidget(checkBox);layout->setAlignment(Qt::AlignCenter);layout->setContentsMargins(0, 0, 0, 0);widget->setLayout(layout);ui->tableWidget->setCellWidget(i, 0, widget);checkBox->SetID(i);connect(checkBox, &MyCheckBox::clicked, this, &MainWindow::recvCheckBox);}// ui->tableWidget->insertRow(3);// MyCheckBox *checkBox = new MyCheckBox();// checkBox->setText(QString::number(3));// QWidget *widget = new QWidget();// QHBoxLayout *layout = new QHBoxLayout(widget);// layout->addWidget(checkBox);// layout->setAlignment(Qt::AlignCenter);// layout->setContentsMargins(0, 0, 0, 0);// widget->setLayout(layout);// ui->tableWidget->setCellWidget(3, 0, widget);// checkBox->SetID(3);// connect(checkBox, &MyCheckBox::clicked, this, &MainWindow::recvCheckBox);}MainWindow::~MainWindow()
{delete ui;
}void MainWindow::recvCheckBox(bool checked)
{MyCheckBox* checkBox = static_cast<MyCheckBox*>(sender());qDebug() << "checked = " << checked << ";id = " << checkBox->GetID();
}