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

[cpp] view plaincopy

1. void Widget::initSoftWareList()  
2. {  
3.     softWareCount=0;  
4.     softWareList=new QListWidget;  
5.     softWareList->setFrameShape(QFrame::NoFrame);  
6.     QSettings reg("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall",QSettings::NativeFormat);  
7.     QStringList groupsList=reg.childGroups();  
8.     foreach(QString group,groupsList)  
9.     {  
10.         reg.beginGroup(group);  
11.         QString softWareName=reg.value("DisplayName").toString();  
12.         if(!softWareName.isEmpty())  
13.         {  
14.             softWareList->addItem(new QListWidgetItem(softWareName));  
15.             softWareCount++;  
16.         }  
17.         reg.endGroup();  
18.     }  
19. }  

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

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1. void Widget::initRunOnStart()  
2. {  
3.     runOnStartCount=0;  
4.     runOnStartTree=new QTreeWidget;  
5.     runOnStartTree->setColumnCount(2);  
6.     runOnStartTree->setHeaderLabels(QStringList()<<tr("名称")<<tr("位置"));  
7.     runOnStartTree->setFrameShape(QFrame::NoFrame);  
8.     QSettings reg("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run",QSettings::NativeFormat);  
9.     QStringList keyList=reg.childKeys();  
10.     foreach(QString key,keyList)  
11.     {  
12.         QString location=reg.value(key).toString();  
13.         if(!location.isEmpty())  
14.         {  
15.             runOnStartTree->addTopLevelItem(new QTreeWidgetItem(QStringList()<<key<<location));  
16.             runOnStartCount++;  
17.         }  
18.     }  
19. }  

 

2.读取ini文件

[cpp] view plaincopy

1. void Widget::initIniText()  
2. {  
3.     QString text;  
4.     QSettings iniTest("C:\\Users\\Administrator\\Desktop\\test.ini",QSettings::IniFormat);  
5.     QStringList groupList=iniTest.childGroups();  
6.     foreach(QString group,groupList)  
7.     {  
8.         iniTest.beginGroup(group);  
9.         QStringList keyList=iniTest.childKeys();  
10.         foreach(QString key,keyList)  
11.         {  
12.             text+=key+" "+tr(iniTest.value(key).toString().toStdString().c_str());  
13.         }  
14.         iniTest.endGroup();  
15.     }  
16.     iniText=new QTextEdit(text);  
17.     iniText->setFrameShape(QFrame::NoFrame);  
18.     iniText->setReadOnly(true);  
19. }