Qt做关于界面

在上位机系统中，经常需要显示当前软件版本，当前fpga版本，那么咱就做一个help的菜单的关于界面

解决的问题：

解决显示版本信息的UI

Axure界面图：

如何实现：

实现文件的存储：QSetting来存储版本信息文件，详细看代码

UI的实现图：

代码块解析：

.h文件

/*********************************************************************************
*Author:zhouFuLiang
*Date: 2024-04-20  16:46
*Description: 显示关于信息
**********************************************************************************/
#ifndef DEABOUTUI_H
#define DEABOUTUI_H
 
#include <QDialog>
#include <QLabel>
 
// 数据结构，用于存储版本信息
struct VersionInfo {
    QString appVersion;
    QString installDate;
    QString content;
 
    QString fpgaVersion;
    QString fpgaInstDate;
    QString fpgaContent;
};
 
class DeAboutUi : public QDialog
{
    Q_OBJECT
public:
    explicit DeAboutUi(QWidget *parent = 0);
    void writeFpgaVesion(int iValue);
    void writeFpgaInstallDate(int iValue);
 
signals:
 
public slots:
 
private:
    void initConnect();
    void initGeometry();
    /*
     * @brief 将整数转换为日期时间，
     * @param intValue 如2022
     * @param
     * @return 返回对应的QString
    */
    QString intToDateString(int intValue);
    void writeDefaultVersionInfo();
    VersionInfo readVersionInfo();
    /*
     * @brief 更新版本信息的UI
     * @param
     * @param
     * @return
    */
    void notifyVersionUi();
private:
    QLabel *m_pSoftVer;
    QLabel *m_pSoftData;
    QLabel *m_pSoftContent;
 
    QLabel *m_pFpgaVer;
    QLabel *m_pFpgaData;
    QLabel *m_pFpgaContent;
 
    QFrame *pVLine1;
    QFrame *pVLine2;
    QString m_sysVesPath;
};
 
#endif // DEABOUTUI_H

.cpp文件

#include "deabout_ui.h"
#include <QVBoxLayout>
#include <QGridLayout>
#include "public.h"
 
DeAboutUi::DeAboutUi(QWidget *parent) : QDialog(parent)
{
    this->resize(350,250);
    this->setWindowTitle(QString::fromLocal8Bit("关于"));
 
    m_pSoftVer = new QLabel(this);
    m_pSoftData= new QLabel(this);
    m_pSoftContent= new QLabel(this);
 
    m_pFpgaVer= new QLabel(this);
    m_pFpgaData= new QLabel(this);
    m_pFpgaContent= new QLabel(this);
 
    pVLine1 = new QFrame(this);
    pVLine1->setFrameStyle(QFrame::HLine | QFrame::Plain);
    pVLine1->setLineWidth(2);
    pVLine1->setStyleSheet("color: black");
 
    pVLine2 = new QFrame(this);
    pVLine2->setFrameStyle(QFrame::HLine | QFrame::Plain);
    pVLine2->setLineWidth(2);
    pVLine2->setStyleSheet("color: black");
 
    initGeometry();
    initConnect();
 
    m_sysVesPath = qApp->applicationDirPath()+ "/" + "AppDoc/SystemIni/" + "version.ini";
 
    // 检查配置文件是否存在
    QFileInfo configFile(m_sysVesPath);
    if (!configFile.exists()) {
        // 如果配置文件不存在，则写入默认版本信息
        writeDefaultVersionInfo();
    }
 
    // 读取版本信息
    notifyVersionUi();
 
    writeFpgaInstallDate(20210212);
 
}
 
void DeAboutUi::writeFpgaVesion(int iValue)
{
    QString fpgaVersion= QString::number(iValue);
    // 创建QSettings对象并指定INI文件路径
    QSettings settings(m_sysVesPath, QSettings::IniFormat);
 
    // 写入版本信息到INI文件
    settings.beginGroup("FPGAVersion");
    settings.setValue("FpgaVersion", fpgaVersion);
    settings.endGroup();
 
    notifyVersionUi();
}
 
void DeAboutUi::writeFpgaInstallDate(int iValue)
{
    QString fpgaDate= intToDateString(iValue);
    // 创建QSettings对象并指定INI文件路径
    QSettings settings(m_sysVesPath, QSettings::IniFormat);
 
    // 写入版本信息到INI文件
    settings.beginGroup("FPGAVersion");
    settings.setValue("FpgaDate", fpgaDate);
    settings.endGroup();
 
    notifyVersionUi();
}
 
 
void DeAboutUi::initConnect()
{
 
}
 
void DeAboutUi::initGeometry()
{
    QFont font;
    font.setBold(true);
    font.setFamily("Microsoft JhengHei");
    QVBoxLayout *layout = new QVBoxLayout;
    QLabel *sLabey = new QLabel(QString::fromLocal8Bit("软件版本:"), this);
    sLabey->setFont(font);
    layout->addWidget(sLabey, Qt::AlignLeft | Qt::AlignBottom);
 
    QGridLayout *glayout1 = new QGridLayout;
    glayout1->addWidget(new QLabel(QString::fromLocal8Bit("版本号:"), this),0, 0, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout1->addWidget(m_pSoftVer,0, 1, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout1->addWidget(new QLabel(QString::fromLocal8Bit("日期:"), this),1, 0, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout1->addWidget(m_pSoftData,1, 1, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout1->addWidget(new QLabel(QString::fromLocal8Bit("内容:"), this),2, 0, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout1->addWidget(m_pSoftContent,2, 1, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
 
    QGridLayout *glayout2 = new QGridLayout;
    glayout2->addWidget(new QLabel(QString::fromLocal8Bit("版本号:"), this),0, 0, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout2->addWidget(m_pFpgaVer,0, 1, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout2->addWidget(new QLabel(QString::fromLocal8Bit("日期:"), this),1, 0, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout2->addWidget(m_pFpgaData,1, 1, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout2->addWidget(new QLabel(QString::fromLocal8Bit("内容:"), this),2, 0, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
    glayout2->addWidget(m_pFpgaContent,2, 1, 1, 1,Qt::AlignLeft | Qt::AlignHCenter);
 
    layout->addWidget(pVLine1, 2, Qt::AlignTop);
    layout->addLayout(glayout1);
 
    QLabel *fLabey = new QLabel(QString::fromLocal8Bit("FPGA版本:"), this);
    fLabey->setFont(font);
    layout->addWidget(fLabey, Qt::AlignLeft | Qt::AlignBottom);
 
    layout->addWidget(pVLine2, 0, Qt::AlignTop);
    layout->addLayout(glayout2);
 
    this->setLayout(layout);
}
 
QString DeAboutUi::intToDateString(int intValue)
{
    // 解析年、月、日
    int year = intValue / 10000; // 获取年份
    int month = (intValue / 100) % 100; // 获取月份
    int day = intValue % 100; // 获取日
 
    // 构建QDateTime对象
    QDateTime dateTime(QDate(year, month, day));
 
    // 将QDateTime对象格式化为字符串
    return dateTime.toString("yyyy-MM-dd"); // 根据需要选择日期格式
}
 
void DeAboutUi::writeDefaultVersionInfo()
{
    // 创建QSettings对象并指定INI文件路径
    QSettings settings(m_sysVesPath, QSettings::IniFormat);
 
    // 写入默认版本信息到INI文件
    settings.beginGroup("APPVersion");
    settings.setValue("AppVersion", QString("%1").arg(FORMAL_VERSION_NUMBER));
    settings.setValue("AppDate", "2024-04-20");
    settings.setValue("AppContent", "strContent");
    settings.endGroup();
 
    settings.beginGroup("FPGAVersion");
    settings.setValue("FpgaVersion", QString("%1").arg(FORMAL_VERSION_NUMBER));
    settings.setValue("FpgaDate", "2024-04-20");
    settings.setValue("FpgaContent", "strContent");
    settings.endGroup();
 
    qDebug() << "Default version information has been written to config.ini";
}
 
VersionInfo DeAboutUi::readVersionInfo()
{
    // 创建QSettings对象并指定INI文件路径
    QSettings settings(m_sysVesPath, QSettings::IniFormat);
 
    // 读取版本信息
    VersionInfo info;
    settings.beginGroup("APPVersion");
    info.appVersion = settings.value("AppVersion").toString();
    info.installDate = settings.value("AppDate").toString();
    info.content = settings.value("AppContent").toString();
    settings.endGroup();
 
 
    settings.beginGroup("FPGAVersion");
    info.fpgaVersion = settings.value("FpgaVersion").toString();
    info.fpgaInstDate = settings.value("FpgaDate").toString();
    info.fpgaContent = settings.value("FpgaContent").toString();
    settings.endGroup();
 
    return info;
}
 
void DeAboutUi::notifyVersionUi()
{
    VersionInfo vers = readVersionInfo();
    m_pSoftVer->setText(QString("V%1").arg(vers.appVersion));
    m_pSoftData->setText(QString("%1").arg(vers.installDate));
    m_pSoftContent->setText(QString("%1").arg(vers.content));
 
    m_pFpgaVer->setText(QString("%1").arg(vers.fpgaVersion));
    m_pFpgaData->setText(QString("%1").arg(vers.fpgaInstDate));
    m_pFpgaContent->setText(QString("%1").arg(vers.fpgaContent));
}

其中有两点：fpga推给上位机的数据是一个int类型的如 int date = 20210212；需要转换

还有QSetting的用法，是为了单独去改变其中的一个值，写入文件，后期读取，如果FPga有推送版本，就更新对应的值，然后用UI的update，函数，来更新UI的改变。