QtGui¶

The QtGui module contains classes for windowing system integration, event handling, 2D graphics, basic imaging, fonts and text. It also containes a complete set of OpenGL and OpenGL ES bindings (see Support for OpenGL). Application developers would normally use this with higher level APIs such as those contained in the QtWidgets module.

Classes¶

QAbstractOpenGLFunctions	QImageWriter	QPageSize	QSyntaxHighlighter
QAbstractTextDocumentLayout	QInputEvent	QPaintDevice	QTabletEvent
QActionEvent	QInputMethod	QPaintDeviceWindow	QTextBlock
QBackingStore	QInputMethodEvent	QPaintEngine	QTextBlockFormat
QBitmap	QInputMethodQueryEvent	QPaintEngineState	QTextBlockGroup
QBrush	QIntValidator	QPainter	QTextBlockUserData
QClipboard	QKeyEvent	QPainterPath	QTextCharFormat
QCloseEvent	QKeySequence	QPainterPathStroker	QTextCursor
QColor	QLinearGradient	QPaintEvent	QTextDocument
QColorConstants	QMatrix2x2	QPalette	QTextDocumentFragment
QColorSpace	QMatrix2x3	QPdfWriter	QTextDocumentWriter
QColorTransform	QMatrix2x4	QPen	QTextFormat
QConicalGradient	QMatrix3x2	QPicture	QTextFragment
QContextMenuEvent	QMatrix3x3	QPictureIO	QTextFrame
QCursor	QMatrix3x4	QPixelFormat	QTextFrameFormat
QDesktopServices	QMatrix4x2	QPixmap	QTextImageFormat
QDoubleValidator	QMatrix4x3	QPixmapCache	QTextInlineObject
QDrag	QMatrix4x4	QPlatformSurfaceEvent	QTextItem
QDragEnterEvent	QMouseEvent	QPointingDeviceUniqueId	QTextLayout
QDragLeaveEvent	QMoveEvent	QPolygon	QTextLength
QDragMoveEvent	QMovie	QPolygonF	QTextLine
QDropEvent	QNativeGestureEvent	QQuaternion	QTextList
QEnterEvent	QOffscreenSurface	QRadialGradient	QTextListFormat
QExposeEvent	QOpenGLBuffer	QRasterWindow	QTextObject
QFileOpenEvent	QOpenGLContext	QRawFont	QTextObjectInterface
QFocusEvent	QOpenGLContextGroup	QRegExpValidator	QTextOption
QFont	QOpenGLDebugLogger	QRegion	QTextTable
QFontDatabase	QOpenGLDebugMessage	QRegularExpressionValidator	QTextTableCell
QFontInfo	QOpenGLFramebufferObject	QResizeEvent	QTextTableCellFormat
QFontMetrics	QOpenGLFramebufferObjectFormat	QRgba64	QTextTableFormat
QFontMetricsF	QOpenGLPaintDevice	QScreen	QTouchDevice
QGlyphRun	QOpenGLPixelTransferOptions	QScrollEvent	QTouchEvent
QGradient	QOpenGLShader	QScrollPrepareEvent	QTransform
QGuiApplication	QOpenGLShaderProgram	QSessionManager	QValidator
QHelpEvent	QOpenGLTexture	QShortcutEvent	QVector2D
QHideEvent	QOpenGLTextureBlitter	QShowEvent	QVector3D
QHoverEvent	QOpenGLTimeMonitor	QStandardItem	QVector4D
QIcon	QOpenGLTimerQuery	QStandardItemModel	QWhatsThisClickedEvent
QIconDragEvent	QOpenGLVersionProfile	QStaticText	QWheelEvent
QIconEngine	QOpenGLVertexArrayObject	QStatusTipEvent	QWindow
QImage	QOpenGLWindow	QStyleHints	QWindowStateChangeEvent
QImageIOHandler	QPagedPaintDevice	QSurface
QImageReader	QPageLayout	QSurfaceFormat

Functions¶

qAlpha(QRgba64) → int: TODO

qAlpha(int) → int: TODO

qBlue(QRgba64) → int: TODO

qBlue(int) → int: TODO

qFuzzyCompare(QMatrix4x4, QMatrix4x4) → bool: TODO

qFuzzyCompare(QQuaternion, QQuaternion) → bool: TODO

qFuzzyCompare(QTransform, QTransform) → bool: TODO

qFuzzyCompare(QVector2D, QVector2D) → bool: TODO

qFuzzyCompare(QVector3D, QVector3D) → bool: TODO

qFuzzyCompare(QVector4D, QVector4D) → bool: TODO

qGray(int) → int: TODO

qGray(int, int, int) → int

Returns a gray value (0 to 255) from the (r, g, b) triplet.

The gray value is calculated using the formula (r * 11 + g * 16 + b * 5)/32.

qGreen(QRgba64) → int: TODO

qGreen(int) → int: TODO

qIsGray(int) → bool: TODO

qPixelFormatAlpha(int, typeInterpretation: TypeInterpretation = UnsignedInteger) → QPixelFormat: TODO

qPixelFormatCmyk(int, alphaSize: int = 0, alphaUsage: AlphaUsage = IgnoresAlpha, alphaPosition: AlphaPosition = AtBeginning, typeInterpretation: TypeInterpretation = UnsignedInteger) → QPixelFormat: TODO

qPixelFormatGrayscale(int, typeInterpretation: TypeInterpretation = UnsignedInteger) → QPixelFormat: TODO

qPixelFormatHsl(int, alphaSize: int = 0, alphaUsage: AlphaUsage = IgnoresAlpha, alphaPosition: AlphaPosition = AtBeginning, typeInterpretation: TypeInterpretation = FloatingPoint) → QPixelFormat: TODO

qPixelFormatHsv(int, alphaSize: int = 0, alphaUsage: AlphaUsage = IgnoresAlpha, alphaPosition: AlphaPosition = AtBeginning, typeInterpretation: TypeInterpretation = FloatingPoint) → QPixelFormat: TODO

qPixelFormatRgba(int, int, int, int, AlphaUsage, AlphaPosition, premultiplied: AlphaPremultiplied = NotPremultiplied, typeInterpretation: TypeInterpretation = UnsignedInteger) → QPixelFormat: TODO

qPixelFormatYuv(YUVLayout, alphaSize: int = 0, alphaUsage: AlphaUsage = IgnoresAlpha, alphaPosition: AlphaPosition = AtBeginning, premultiplied: AlphaPremultiplied = NotPremultiplied, typeInterpretation: TypeInterpretation = UnsignedByte, byteOrder: ByteOrder = LittleEndian) → QPixelFormat: TODO

qPremultiply(QRgba64) → QRgba64: TODO

qPremultiply(int) → int: TODO

qRed(QRgba64) → int: TODO

qRed(int) → int: TODO

qRgb(int, int, int) → int: Returns the ARGB quadruplet (255, r, g, b).

See also

qRgba(), qRed(), qGreen(), qBlue().

qRgba(int, int, int, int) → int: Returns the ARGB quadruplet (a, r, g, b).

See also

qRgb(), qRed(), qGreen(), qBlue().

qRgba64(int) → QRgba64: TODO

qRgba64(int, int, int, int) → QRgba64: TODO

qt_set_sequence_auto_mnemonic(bool)

Specifies whether mnemonics for menu items, labels, etc., should be honored or not. On Windows and X11, this feature is on by default; on macOS, it is off. When this feature is off (that is, when b is false), mnemonic() always returns an empty string.

Note: This function is not declared in any of Qt’s header files. To use it in your application, declare the function prototype before calling it.