QT5:类总结

一.QObject 类

QObject::d_ptr

QObject::staticMetaObject

QObject::staticQtMetaObject

QObject::tr()

QObject::event()

QObject::parent()

QObject::thread()

QObject::connect()

QObject::children()

QObject::inherits()

QObject::property()

QObject::userData()

QObject::findChild()

QObject::killTime()

QObject::setParent()

QObject::disconnect()

QObject::objectName()

QObject::startTimer()

QObject::deleteLater()

QObject::eventFilter()

QObject::setProperty()

QObject::setUserData()

QObject::blockSignals()

QObject::findChildren()

QObject::isWidgetType

QObject::moveToThread()

QObject::setObjectName()

QObject::dumpObjectInfo()

QObject::dumpObjectTree()

QObject::signalsBlocked()

QObject::registerUserData()

QObject::removeEventFilter()

QObject::installEventFilter()

QObject::dynamicPropertyNames()

QObject::metaObject()

QObject::d_func()

QObject::sender()

QObject::trUtf8()

QObject::destoryed()

QObject::receivers()

QObject::childEvent()

QObject::timerEvent()

QObject::connectImpl()

QObject::customEvent()

QObject::qt_metacall()

QObject::qt_metacast()

QObject::connectNotify()

QObject::disconnectImpl()

QObject::disconnectNotify()

QObject::isSignalConnected()

QObject::objectNameChanged()

QObject::senderSignalIndex()

QObject::~QObject()

QObject::qt_static_metacall()

QObject::operator = ()

二.QLabel 类

QLabel 类继承于 QFrame 类

QLabel::move()

QLabel::setText()

三.QFrame 类

QFrame 类继承于 QWidget 类

四.QAction 类

QAction可以添加到菜单栏 工具栏 状态栏上

五.QPaintDevice 类

QPaintDevice::painters

QPaintDevice::reserved

 

PdmDpiX

PdmDpiY

...

QPaintDevice::depth()

QPaintDevice::width()

QPaintDevice::height()

QPaintDevice::devType()

QPaintDevice::widthMM()

QPaintDevice::heightMM()

QPaintDevice::colorCount()

QPaintDevice::logicalDpiX()

QPaintDevice::logicalDpiY()

QPaintDevice::physicalDpiX()

QPaintDevice::physicalDpiY()

QPaintDevice::paintingActive()

QPaintDevice::devicePixelRatio()

QPaintDevice::devicePixeRatioF()

QPaintDevice::devicePixelRatioFScale()

QPaintDevice::metric()

QPaintDevice::redirected()

QPaintDevice::initPainter()

QPaintDevice::sharedPainter()

QPaintDevice::~QPaintDevice()

QPaintDevice::operator = ()

六.QMessageBox 类 

#include <QMessageBox>

QMessageBox::warning(this, tr("警告"), tr("用户名和密码错误!"), QMessageBox::Yes);

七.QApplication QGuiApplication QCoreApplication 类

QCoreApplication是针对控制台的（基类）

QGuiApplication有简单的界面，没有widget模块（基类+GUI）

QApplication是针对Widget的（基类+GUI+Widget）