QwtCompassMagnetNeedle(3)      Qwt User's Guide      QwtCompassMagnetNeedle(3)

NAME
       QwtCompassMagnetNeedle - A magnet needle for compass widgets.


SYNOPSIS
       #include <qwt_dial_needle.h>

       Inherits QwtDialNeedle.

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

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

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

Detailed Description
       A magnet needle for compass widgets.

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

       The following colors are used:

       o QPalette::Light
          Used for pointing south

       o QPalette::Dark
          Used for pointing north

       o QPalette::Base
          Knob (ThinStyle only)

       See also
           QwtDial, QwtCompass

       Definition at line 127 of file qwt_dial_needle.h.

Member Enumeration Documentation
   enum QwtCompassMagnetNeedle::Style
       Style of the needle.

       Enumerator

       TriangleStyle
              A needle with a triangular shape.

       ThinStyle
              A thin needle.

       Definition at line 131 of file qwt_dial_needle.h.

Member Function Documentation
   void QwtCompassMagnetNeedle::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 369 of file qwt_dial_needle.cpp.


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

Version 6.2.0                   Sun Jul 18 2021      QwtCompassMagnetNeedle(3)