Qt读写注册表和ini文件

Qt刚上手，用起来有点感觉功能很强大，但是资料太少。

刚才上网查Qt怎么操作注册表，可网上几乎找不到什么东西。就去查Qt文档，摸索了一会儿，总算摸索出来了。相当简单。竟比Delphi还简单，比起VC就更不用提了。需要#include <QSettings>

只举几个简单的例子：

1、用QSettings写注册表

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QSettings *reg = new QSettings("HKEY_CURRENT_USER//Software//yinhaifan",
QSettings::NativeFormat);
reg->setValue("registered",true);
delete reg;

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QSettings *reg = new QSettings("HKEY_CURRENT_USER//Software//yinhaifan",  

                QSettings::NativeFormat);   
if (reg->value("registered",false).toBool())  

{   
    QMessageBox::information(NULL,"information","registered");  

}   
delete reg;  

    QSettings *reg = new QSettings("HKEY_CURRENT_USER//Software//yinhaifan",
                    QSettings::NativeFormat);
    if (reg->value("registered",false).toBool())
    {
        QMessageBox::information(NULL,"information","registered");
    }
    delete reg;

还可以toInt(),toString()等。

3、用QSettings写ini文件:

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QSettings *ConfigIni = new QSettings("D://a.ini",QSettings::IniFormat,0);

ConfigIni->setValue("/config/node1",ui->lineEdit->text());

delete ConfigIni;

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QSettings *ConfigIni = new QSettings("D://a.ini",QSettings::IniFormat,0);  

ui->lineEdit_2->setText(ConfigIni->value("/config/node1","20").toString());  

delete ConfigIni;  

    QSettings *ConfigIni = new QSettings("D://a.ini",QSettings::IniFormat,0);
    ui->lineEdit_2->setText(ConfigIni->value("/config/node1","20").toString());
    delete ConfigIni;

这几段代码都是我在Qt Creator里面写的，所以用ui->lineEdit*->text()和ui->lineEdit*->setText()做输入和输出了。

在文档中的QSettings Class Reference部分讲的很清楚，在这里我就不多说了。也该睡觉了～