原创 Qt读写注册表和ini文件[转]

需要#include <QSettings>

    只举几个简单的例子：

1、用QSettings写注册表

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

当然reg->setValue还可以写入字符串，整型之类的数据。

比如reg->setValue("registered","yes");

2、用QString读注册表

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:

QSettings *ConfigIni = new
QSettings("D:\\a.ini",QSettings::IniFormat,0);
ConfigIni->setValue("/config/node1",ui->lineEdit->text());
delete ConfigIni;

4、用QSettings读ini文件:

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