QwtCompassMagnetNeedle - Man Page
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
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:
- QPalette::Light
Used for pointing south - QPalette::Dark
Used for pointing north - QPalette::Base
Knob (ThinStyle only)
- See also
QwtDial, QwtCompass
Member Enumeration Documentation
enum QwtCompassMagnetNeedle::Style
Style of the needle.
Enumerator
- TriangleStyle
A needle with a triangular shape.
- ThinStyle
A thin needle.
Member Function Documentation
void QwtCompassMagnetNeedle::drawNeedle (QPainter * painter, double length, QPalette::ColorGroup colorGroup) const [protected], [virtual]
Draw the needle
- Parameters
painter Painter
length Length of the needle
colorGroup Color group, used for painting
Implements QwtDialNeedle.
Author
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