QwtCompassMagnetNeedle - A magnet needle for compass widgets.

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Version 6.1.4                                    Wed Jan 2 2019                        QwtCompassMagnetNeedle(3)

       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)

       Seealso:QwtDial, QwtCompass

enumQwtCompassMagnetNeedle::Style
       Style of the needle.

       EnumeratorTriangleStyle
              A needle with a triangular shape.

       ThinStyle
              A thin needle.

voidQwtCompassMagnetNeedle::drawNeedle(QPainter*painter,doublelength,QPalette::ColorGroupcolorGroup)const[protected],[virtual]
       Draw the needle

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

       Implements QwtDialNeedle.

       QwtCompassMagnetNeedle - A magnet needle for compass widgets.

       #include <qwt_dial_needle.h>

       Inherits QwtDialNeedle.

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

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

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