Qt QSettings（遍历）读取注册表和ini文件

Qt QSettings读取注册表和ini

1.读取注册表，以读取已经安装的软件为例。

已经安装的软件信息的注册表位置：

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

 void Widget::initSoftWareList()
 {
     softWareCount=0;
     softWareList=new QListWidget;
     softWareList->setFrameShape(QFrame::NoFrame);
     QSettings reg("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall",QSettings::NativeFormat);
     QStringList groupsList=reg.childGroups();
     foreach(QString group,groupsList)
     {
         reg.beginGroup(group);
         QString softWareName=reg.value("DisplayName").toString();
         if(!softWareName.isEmpty())
         {
             softWareList->addItem(new QListWidgetItem(softWareName));
             softWareCount++;
         }
         reg.endGroup();
     }
 }

主要是要分清childGroups和childKeys。

 

再看看读取开机自启动信息：

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

 void Widget::initRunOnStart()
 {
     runOnStartCount=0;
     runOnStartTree=new QTreeWidget;
     runOnStartTree->setColumnCount(2);
     runOnStartTree->setHeaderLabels(QStringList()<"名称")<"位置"));
     runOnStartTree->setFrameShape(QFrame::NoFrame);
     QSettings reg("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run",QSettings::NativeFormat);
     QStringList keyList=reg.childKeys();
     foreach(QString key,keyList)
     {
         QString location=reg.value(key).toString();
         if(!location.isEmpty())
         {
             runOnStartTree->addTopLevelItem(new QTreeWidgetItem(QStringList()<
             runOnStartCount++;
         }
     }
 }

 

2.读取ini文件

 void Widget::initIniText()
 {
     QString text;
     QSettings iniTest("C:\\Users\\Administrator\\Desktop\\test.ini",QSettings::IniFormat);
     QStringList groupList=iniTest.childGroups();
     foreach(QString group,groupList)
     {
         iniTest.beginGroup(group);
         QStringList keyList=iniTest.childKeys();
         foreach(QString key,keyList)
         {
             text+=key+" "+tr(iniTest.value(key).toString().toStdString().c_str());
         }
         iniTest.endGroup();
     }
     iniText=new QTextEdit(text);
     iniText->setFrameShape(QFrame::NoFrame);
     iniText->setReadOnly(true);
 }