Qt ini文件的读写

末蓝、 2022-12-27 11:15 167阅读 0赞

# Qt ini文件的读写 #

### 文章目录 ###

*  Qt ini文件的读写
 *   *  0. Qt helper
     *  1. ini文件写入
     *  2. ini文件读取
     *  3. 改变ini文件存放路径
     *  参考

## 0. Qt helper ##

`QSettings::QSettings(const QString &fileName, Format format, QObject *parent = Q_NULLPTR)`

> Constructs a QSettings object for accessing the settings stored in the file called fileName, with parent parent. If the file doesn’t already exist, it is created.  
> If format is QSettings::NativeFormat, the meaning of fileName depends on the platform. On Unix, fileName is the name of an INI file. On macOS and iOS, fileName is the name of a .plist file. On Windows, fileName is a path in the system registry.  
> If format is QSettings::IniFormat, fileName is the name of an INI file.

生成的ini文件默认存储在Debug目录下  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA_size_16_color_FFFFFF_t_70]

## 1. ini文件写入 ##

> 格式是： 节/键 = 值  
> section  
> key = value

//创建ini文件
        QSettings *qsetWrite = new QSettings("test.ini", QSettings::IniFormat);
        //设置 节键值 参数
    	qsetWrite->setValue("1/10", 12);
        qsetWrite->setValue("1/11", 23);
        qsetWrite->setValue("1/12", 34);
    
        //qsetWrite->beginGroup("1");//section 条目多用这种写法比较方便
        //qsetWrite->setValue("10", 12);
        //qsetWrite->setValue("11", 23);
        //qsetWrite->setValue("12", 34);
    	//qsetWrite->endGroup();
        qsetWrite->setValue("2/20", 22);
        qsetWrite->setValue("2/21", 45);

**结果：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA_size_16_color_FFFFFF_t_70 1]

## 2. ini文件读取 ##

> 通过 节键 获取 值的内容

QSettings *qsetRead = new QSettings("test.ini", QSettings::IniFormat);
        QString str1 = qsetRead->value("1/10").toString();
        QString str2 = qsetRead->value("1/11").toString();
        QString str3 = qsetRead->value("1/12").toString();
        QString str4 = qsetRead->value("2/20").toString();
    
        qDebug() << str1 << "\t" << str2 << "\t" << str3 << "\t" << str4;

**结果：**  
![在这里插入图片描述][20201210164124483.png]

## 3. 改变ini文件存放路径 ##

只要把ini文件名该文路径名就可以随便存放路径了

`QSettings *qsetWrite = new QSettings("C://Users//Thinkpad//Desktop//test1210.ini", QSettings::IniFormat);`  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA_size_16_color_FFFFFF_t_70 2]

## 参考 ##

[Qt读写文件][Qt]  
[Qt对ini文件的操作][Qt_ini]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA_size_16_color_FFFFFF_t_70]: /images/20221120/406180b626f84386bcce0a9fc86e2684.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20201210164616652.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA==,size_16,color_FFFFFF,t_70
[20201210164124483.png]: https://img-blog.csdnimg.cn/20201210164124483.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20201210170430236.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjIzNTE5OA==,size_16,color_FFFFFF,t_70
[Qt]: https://www.iteye.com/blog/umgsai-2103034
[Qt_ini]: https://blog.csdn.net/dp_huang/article/details/79012590