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()<

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);

}