| Qwt User's Guide
    6.1.3
    | 
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. | |
|  Public Member Functions inherited from QwtDialNeedle | |
| QwtDialNeedle () | |
| Constructor. | |
| virtual | ~QwtDialNeedle () | 
| Destructor. | |
| virtual void | setPalette (const QPalette &) | 
| const QPalette & | palette () const | 
| virtual void | draw (QPainter *painter, const QPointF ¢er, double length, double direction, QPalette::ColorGroup=QPalette::Active) const | 
| Protected Member Functions | |
| virtual void | drawNeedle (QPainter *, double length, QPalette::ColorGroup) const | 
|  Protected Member Functions inherited from QwtDialNeedle | |
| virtual void | drawKnob (QPainter *, double width, const QBrush &, bool sunken) const | 
| Draw the knob. | |
A magnet needle for compass widgets.
A magnet needle points to two opposite directions indicating north and south.
The following colors are used:
| 
 | protectedvirtual | 
Draw the needle
| painter | Painter | 
| length | Length of the needle | 
| colorGroup | Color group, used for painting | 
Implements QwtDialNeedle.