There are two approaches to creating a custom style.
You can create a custom look and feel for your application by creating a custom style. Style() - >drawPrimitive( QStyle ::PE_FrameFocusRect, &option, &painter, this) Creating a Custom Style
#Asciidocfx change preview style how to
See the QStyleOption class documentation for details on how to use it.įor convenience, Qt provides the QStylePainter class, which combines a QStyle, a QPainter, and a QWidget. To ensure that drawing operations are as fast as possible, QStyleOption and its subclasses have public data members. For example, PE_FrameFocusRect expects a QStyleOptionFocusRect argument. QStyleOption has various subclasses for the various types of graphical elements that can be drawn. In fact, you can use QStyle to draw on any paint device, not just widgets, by setting the QPainter properly. The widget is passed as the last argument in case the style needs it to perform special effects (such as animated default buttons on macOS), but it isn't mandatory. QStyle gets all the information it needs to render the graphical element from QStyleOption. Style() - >drawPrimitive( QStyle ::PE_FrameFocusRect, &option, &painter, this) Void MyWidget ::paintEvent( QPaintEvent * /* event */) SubElementRect(QStyle::SubElement element, const QStyleOption * option, const QWidget * widget = nullptr) const = 0 SubControlRect(QStyle::ComplexControl control, const QStyleOptionComplex * option, QStyle::SubControl subControl, const QWidget * widget = nullptr) const = 0 StyleHint(QStyle::StyleHint hint, const QStyleOption * option = nullptr, const QWidget * widget = nullptr, QStyleHintReturn * returnData = nullptr) const = 0 StandardIcon(QStyle::StandardPixmap standardIcon, const QStyleOption * option = nullptr, const QWidget * widget = nullptr) const = 0 SizeFromContents(QStyle::ContentsType type, const QStyleOption * option, const QSize & contentsSize, const QWidget * widget = nullptr) const = 0 PixelMetric(QStyle::PixelMetric metric, const QStyleOption * option = nullptr, const QWidget * widget = nullptr) const = 0 LayoutSpacing(QSizePolicy::ControlType control1, QSizePolicy::ControlType control2, Qt::Orientation orientation, const QStyleOption * option = nullptr, const QWidget * widget = nullptr) const = 0 ItemTextRect(const QFontMetrics & metrics, const QRect & rectangle, int alignment, bool enabled, const QString & text) const ItemPixmapRect(const QRect & rectangle, int alignment, const QPixmap & pixmap) const
HitTestComplexControl(QStyle::ComplexControl control, const QStyleOptionComplex * option, const QPoint & position, const QWidget * widget = nullptr) const = 0 GeneratedIconPixmap(QIcon::Mode iconMode, const QPixmap & pixmap, const QStyleOption * option) const = 0 ComplexControl ĬombinedLayoutSpacing(QSizePolicy::ControlTypes controls1, QSizePolicy::ControlTypes controls2, Qt::Orientation orientation, QStyleOption * option = nullptr, QWidget * widget = nullptr) constĭrawComplexControl(QStyle::ComplexControl control, const QStyleOptionComplex * option, QPainter * painter, const QWidget * widget = nullptr) const = 0ĭrawControl(QStyle::ControlElement element, const QStyleOption * option, QPainter * painter, const QWidget * widget = nullptr) const = 0ĭrawItemPixmap(QPainter * painter, const QRect & rectangle, int alignment, const QPixmap & pixmap) constĭrawItemText(QPainter * painter, const QRect & rectangle, int alignment, const QPalette & palette, bool enabled, const QString & text, QPalette::ColorRole textRole = QPalette::NoRole) constĭrawPrimitive(QStyle::PrimitiveElement element, const QStyleOption * option, QPainter * painter, const QWidget * widget = nullptr) const = 0
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