QT

LincZero大约 2 分钟

QT

Qt类与类方法

可以在Qt助手中搜索这些类以获得详细信息

窗口类

QWidget/QMainWindow/QDialog

头文件（一般放在要继承的类的头文件中）
- #include <QWidget>、#include <QMainWindow>、#include <QDialog>
继承
- 其中QMainWindow和QDialog都是QWidget的基类，QWidget的基类是QObject and QPaintDevice
- 而创建工程时会创建一个这三者之一的派生类
常用方法
- setWindowTitle("");，设置窗口标题
- resize(width, height);，设置宽高（设置后可拖拽大小）
- setFixedSize(width, height);，设置固定的宽高（设置后不可拖拽大小）
补充
- 与控件类和抽象类相比，这三个窗口类一般都通过子类继承来使用

窗口类继承树

粗略继承树

粗略继承树——Q开头的都起源QObject

类关系一览1

Qt类关系一览表

（https://blog.csdn.net/qq_15174437/article/details/100987110）UML类图

类关系一览2

https://codeantenna.com/a/gF5TfbdDeX

QWidget 类

QWidget
- QAbstractButton
  - QCheckBox
  - QPushButton
    - QCommandLinkButton
  - QRadioButton
  - QToolButton
- QAbstractSlider
  - QDial
  - QScrollBar
  - QSlider
- QAbstractSpinBox
  - QDateTimeEdit
    - QDateEdit
    - QTimeEdit
  - QDoubleSpinBox
  - QSpinBox
- QAxWidget
- QCalendarWidget
- QComboBox
  - QFontComboBox
- QDesignerActionEditorInterface
- QDesignerFormWindowInterface
- QDesignerObjectInspectorInterface
- QDesignerPropertyEditorInterface
- QDesignerWidgetBoxInterface
- QDesktopWidget
- QDialog
  - QAbstractPrintDialog
    - QPrintDialog
  - QAxSelect
  - QColorDialog
  - QErrorMessage
  - QFileDialog, QFontDialog
  - QInputDialog
  - QMessageBox
  - QPageSetupDialog
  - QPrintPreviewDialog
  - QProgressDialog
  - QWizard
- QDialogButtonBox
- QDockWidget
- QFocusFrame
- QFrame
  - QAbstractScrollArea
    - QAbstractItemView
      - QColumnView
      - QHeaderView
      - QListView
        QHelpIndexWidget
        QListWidget
        QUndoView
      - QTableView
      - QTreeView
        QHelpContentWidget
        QTreeWidget
    - QGraphicsView
    - QMdiArea
    - QPlainTextEdit
    - QScrollArea
    - QTextEdit
      - QTextBrowser
  - QLabel
  - QLCDNumber
  - QSplitter
  - QStackedWidget
  - QToolBox
- QGLWidget
- QGroupBox
- QHelpSearchQueryWidget
- QHelpSearchResultWidget
- QKeySequenceEdit
- QLineEdit
- QMacCocoaViewContainer
- QMacNativeWidget
- QMainWindow
- QMdiSubWindow
- QMenu
- QMenuBar
- QOpenGLWidget
- QPrintPreviewWidget
- QProgressBar
- QQuickWidget
- QRubberBand
- QSizeGrip
- QSplashScreen
- QSplitterHandle
- QStatusBar
- QSvgWidget
- QTabBar
- QTabWidget
- QToolBar
- QVideoWidget
  - QCameraViewfinder
- QWebEngineView
- QWebInspector
- QWebView
- QWizardPage

QGraphics 类

QGraphicsAnchor
QGraphicsEffect
- QGraphicsBlurEffect
- QGraphicsColorizeEffect
- QGraphicsDropShadowEffect
- QGraphicsOpacityEffect
QGraphicsLayoutItem
- QGraphicsLayout
  - QGraphicsAnchorLayout
  - QGraphicsGridLayout
  - QGraphicsLinearLayout
- QGraphicsWidget
  - QGraphicsProxyWidget
  - QGraphicsWebView
QGraphicsItem
- QAbstractGraphicsShapeItem
  - QGraphicsEllipseItem
  - QGraphicsPathItem
  - QGraphicsPolygonItem
  - QGraphicsRectItem
  - QGraphicsSimpleTextItem
- QGraphicsItemGroup
- QGraphicsLineItem
- QGraphicsObject
  - QGraphicsSvgItem
  - QGraphicsTextItem
  - QGraphicsVideoItem
  - QGraphicsWidget
    - QGraphicsProxyWidget
    - QGraphicsWebView
- QGraphicsPixmapItem
QGraphicsScene
QGraphicsSceneEvent
- QGraphicsSceneContextMenuEvent
- QGraphicsSceneDragDropEvent
- QGraphicsSceneHelpEvent
- QGraphicsSceneHoverEvent
- QGraphicsSceneMouseEvent
- QGraphicsSceneMoveEvent
- QGraphicsSceneResizeEvent
- QGraphicsSceneWheelEvent
QGraphicsTransform
- QGraphicsRotation
- QGraphicsScale

其他

QAbstractItemDelegate
- QItemDelegate
  - QSqlRelationalDelegate
- QStyledItemDelegate
QAbstractTransition
- QEventTransition
  - QKeyEventTransition
  - QMouseEventTransition
- QSignalTransition
QAccessibleWidget
QAction
- QWidgetAction
QActionGroup
QApplication
QButtonGroup
QColormap
QCompleter
QDataWidgetMapper
QDirModel
QFileIconProvider
QFileSystemModel
QGesture
- QPanGesture
- QPinchGesture
- QSwipeGesture
- QTapAndHoldGesture
- QTapGesture
QGestureRecognizer
QGestureEvent
QItemEditorCreatorBase
- QItemEditorCreator
- QStandardItemEditorCreator
QItemEditorFactory
QLayoutItem
- QLayout
  - QBoxLayout
    - QHBoxLayout
    - QVBoxLayout
  - QFormLayout
  - QGridLayout
  - QStackedLayout
- QSpacerItem
- QWidgetItem
QStyle
- QCommonStyle
  - QProxyStyle
QTextEdit::ExtraSelection
QTileRules
QToolTip
QTreeWidgetItem
QTreeWidgetItemIterator
QUndoCommand
QUndoGroup
QWhatsThis