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QwtCompassWindArrow - An indicator for the wind direction.

NAME  SYNOPSIS  Public Types  Public Member Functions  Protected Member Functions  Detailed Description  Member Enumeration Documentation  enum QwtCompassWindArrow::Style  Constructor & Destructor Documentation  QwtCompassWindArrow::QwtCompassWindArrow (Style style, const QColor & light= Qt::white, const QColor & dark = Qt::gray)  Member Function Documentation  void QwtCompassWindArrow::drawNeedle (QPainter * painter, double length,QPalette::ColorGroup colorGroup) const [override], [protected],[virtual]  Author 

NAME

QwtCompassWindArrow − An indicator for the wind direction.

SYNOPSIS

#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.

Public Types

enum Style { Style1, Style2 }
Style
of the arrow.

Public Member Functions

QwtCompassWindArrow (Style, const QColor &light=Qt::white, const QColor &dark=Qt::gray)

Public Member Functions inherited from QwtDialNeedle

QwtDialNeedle ()
Constructor.
virtual ˜QwtDialNeedle ()
Destructor.
virtual void setPalette (const QPalette &)
const QPalette & palette () const
virtual void draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const

Protected Member Functions

virtual void drawNeedle (QPainter *, double length, QPalette::ColorGroup) const override

Protected Member Functions inherited from QwtDialNeedle

virtual void drawKnob (QPainter *, double width, const QBrush &, bool sunken) const
Draw the knob.

Detailed Description

An indicator for the wind direction.

QwtCompassWindArrow shows the direction where the wind comes from.

QPalette::Light

Used for Style1, or the light half of Style2

QPalette::Dark

Used for the dark half of Style2

See also

QwtDial, QwtCompass

Definition at line 164 of file qwt_dial_needle.h.

Member Enumeration Documentation

enum QwtCompassWindArrow::Style

Style of the arrow.

Enumerator

Style1

A needle pointing to the center.

Style2

A needle pointing to the center.

Definition at line 168 of file qwt_dial_needle.h.

Constructor & Destructor Documentation

QwtCompassWindArrow::QwtCompassWindArrow (Style style, const QColor & light= Qt::white, const QColor & dark = Qt::gray)

Constructor

Parameters

style Arrow style
light
Light color
dark
Dark color

Definition at line 409 of file qwt_dial_needle.cpp.

Member Function Documentation

void QwtCompassWindArrow::drawNeedle (QPainter * painter, double length,QPalette::ColorGroup colorGroup) const [override], [protected],[virtual]

Draw the needle

Parameters

painter Painter
length
Length of the needle
colorGroup
Color group, used for painting

Implements QwtDialNeedle.

Definition at line 427 of file qwt_dial_needle.cpp.

Author

Generated automatically by Doxygen for Qwt User’s Guide from the source code.


Updated 2026-06-01 - jenkler.se | uex.se