Qt讀寫註冊表和ini文件

1、用QSettings寫註冊表

 

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

 

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

當然reg->setValue還可以寫入字符串，整型之類的數據。

比如reg->setValue("registered","yes");

2、用QString讀註冊表

 

1. QSettings *reg = new QSettings("HKEY_CURRENT_USER//Software//yinhaifan",  
2.                  QSettings::NativeFormat);  
3. if (reg->value("registered",false).toBool())  
4. {  
5.      QMessageBox::information(NULL,"information","registered");  
6. }  
7. 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;

還可以toInt(),toString()等。

3、用QSettings寫ini文件:

 

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

 

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

4、用QSettings讀ini文件:

 

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

 

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

   這幾段代碼都是我在Qt Creator裏面寫的，所以用ui->lineEdit*->text()和ui->lineEdit*->setText()做輸入和輸出了。