QT之QButtonGroup用法

素颜马尾好姑娘i 2022-05-09 12:10 561阅读 0赞

QButtonGroup方法来实现分组：将相同功能的按键，设为一个分组，然后可以进行 单选 或 多选 或 互斥单选

# [Qt5之QRadioButton][Qt5_QRadioButton] #

QAbstractButton类是按钮部件的抽象基类，提供了按钮所共有的功能。

# [Qt 之 QAbstractButton][Qt _ QAbstractButton] #

# [Qt 之 QCheckBox][Qt _ QCheckBox] #

==============================================================

#ifndef ADDSTU_H
    #define ADDSTU_H
    
    #include <QDialog>
    #include <QButtonGroup>
    
    namespace Ui {
    class addStu;
    }
    
    class addStu : public QDialog
    {
        Q_OBJECT
    
    public:
        explicit addStu(QWidget *parent = 0);
        ~addStu();
    
        void clearUserInterface();
        void writeToFile(QString cnt);
    
    
    private slots:
        void on_btn_ok_clicked();
    
        void on_btn_cancel_clicked();
    
    private:
        Ui::addStu *ui;
    
        QButtonGroup *sexGroup;//性别按钮组
        QButtonGroup *insGroup;//兴趣按钮组
    };
    
    #endif // ADDSTU_H

#include "addstu.h"
    #include "ui_addstu.h"
    #include<QString>
    #include<QMessageBox>
    #include <QDebug>//要显示line里面的内容要加的
    //#include <QTextStream>
    #include <QFile>//存到文件需要加的
    #include <QList>
    #include <QAbstractButton>
    
    addStu::addStu(QWidget *parent) :
        QDialog(parent),
        ui(new Ui::addStu)
    {
        ui->setupUi(this);
    
        ui->le_id->setPlaceholderText("请输入学号");
        ui->le_id->setClearButtonEnabled(true);
    
        sexGroup = new QButtonGroup(this);
        sexGroup->addButton(ui->rbtn_male,0);
        sexGroup->addButton(ui->rbtn_female,1);
        ui->rbtn_male->setChecked(true);
    
        insGroup = new QButtonGroup(this);
        insGroup->addButton(ui->checkBox,0);
        insGroup->addButton(ui->checkBox_2,1);
        insGroup->addButton(ui->checkBox_3,2);
        insGroup->addButton(ui->checkBox_4,3);
        // 设置不互斥
        insGroup->setExclusive(false);//这样的话就支持多选了。
    }
    
    addStu::~addStu()
    {
        delete ui;
    }
    //https://blog.csdn.net/cxp2205455256/article/details/44956051
    //https://blog.csdn.net/liang19890820/article/details/50976944/
    void addStu::on_btn_ok_clicked()
    {
        QString name = this->ui->le_name->text();
        QString id = this->ui->le_id->text();
        QString sex = this->sexGroup->checkedButton()->text();
        QString age = ui->cbb_age->currentText();
        QString faculty = ui->cbb_faculty->currentText();
    
        qDebug() << name;
        qDebug() << id;
        qDebug() << sex;
    
        QList<QAbstractButton*> ins_list = insGroup->buttons();
        QString ins;
        for(int i =0 ;i<ins_list.length();i++)
        {
            QAbstractButton *che = ins_list.at(i);
            if(che->isChecked())
                ins += che->text() + ",";
        }
    
    /*
        QMessageBox msgBox;
        msgBox.setText("The document has been modified.");
        msgBox.setInformativeText("Do you want to save your changes?");
        msgBox.setStandardButtons(QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);
        msgBox.setDefaultButton(QMessageBox::Save);
        int ret = msgBox.exec();
        */
    
        QString content, writetofileContent;
    
        content = name +'\n'+id +'\n'+sex +'\n'+age+'\n'+faculty+'\n'+ins;
        writetofileContent= name +' '+id +' '+sex +' '+age+' '+faculty+' '+ins;
        qDebug() << writetofileContent;
        if(name.length() <1 || id.length() <1)
        {
            QMessageBox::critical(this,"错误","信息填写不完整，请重新检查","确定");
        }else{
            int ret;
            ret = QMessageBox::question(this,"确认添加吗？",content,"确认","取消");
            qDebug() << ret;
            if(ret == 0)
            {
                clearUserInterface();
    
                writetofileContent += '\n';
                writeToFile(writetofileContent);
            }
        }
    
    }
    
    void addStu::on_btn_cancel_clicked()
    {
        this->close();
    }
    
    void addStu::clearUserInterface()
    {
        ui->le_name->clear();
        ui->le_id->clear();
        ui->rbtn_male->setChecked(true);
        ui->cbb_age->setCurrentIndex(0);
        ui->cbb_faculty->setCurrentIndex(0);
    
        QList<QAbstractButton*> ins_list = insGroup->buttons();
        QString ins;
        for(int i =0 ;i<ins_list.length();i++)
        {
            QAbstractButton *che = ins_list.at(i);
            che->setChecked(false);
        }
    }
    
    void addStu::writeToFile(QString cnt)
    {
        QFile file("stu.txt");
        if (!file.open(QIODevice::Append | QIODevice::Text))
            return;
    
        QTextStream out(&file);
        out << cnt;
    }

[Qt5_QRadioButton]: https://blog.csdn.net/cxp2205455256/article/details/44956051
[Qt _ QAbstractButton]: https://blog.csdn.net/liang19890820/article/details/51509764
[Qt _ QCheckBox]: https://blog.csdn.net/liang19890820/article/details/50976944/