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QwtCompassMagnetNeedle

A magnet needle for compass widgets.

#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.


enum Style { TriangleStyle, ThinStyle }
Style of the needle.


QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)
Constructor.


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

A magnet needle for compass widgets.

A magnet needle points to two opposite directions indicating north and south.

The following colors are used:

  • QPalette::Light
    Used for pointing south
  • QPalette::Dark
    Used for pointing north
  • QPalette::Base
    Knob (ThinStyle only)

See also:

QwtDial, QwtCompass

Style of the needle.

Enumerator

A needle with a triangular shape.
A thin needle.

Draw the needle

Parameters:

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

Implements QwtDialNeedle.

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