Qwt User's Guide
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A magnet needle for compass widgets. More...
#include <qwt_dial_needle.h>
Public Types | |
enum | Style { TriangleStyle, ThinStyle } |
Style of the needle. More... | |
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 |
A magnet needle for compass widgets.
A magnet needle points to two opposite directions indicating north and south.
The following colors are used:
void QwtCompassMagnetNeedle::drawNeedle | ( | QPainter * | painter, |
double | length, | ||
QPalette::ColorGroup | colorGroup | ||
) | const [protected, virtual] |
Draw the needle
painter | Painter |
length | Length of the needle |
colorGroup | Color group, used for painting |
Implements QwtDialNeedle.