QwtCompassMagnetNeedle类 参考

罗盘控件的磁针 更多...

#include <qwt_dial_needle.h>

类 QwtCompassMagnetNeedle 继承关系图:

Public 类型
enum	Style { TriangleStyle , ThinStyle }
	指针样式 更多...

Public 成员函数
	QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)
	Constructor
Public 成员函数 继承自 QwtDialNeedle
	QwtDialNeedle ()
	Constructor
virtual	~QwtDialNeedle ()
	Destructor
virtual void	setPalette (const QPalette &)
	Set the palette for the needle
const QPalette &	palette () const
	Return the palette of the needle
virtual void	draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const
	Draw the needle

Protected 成员函数
virtual void	drawNeedle (QPainter *, double length, QPalette::ColorGroup) const override
	Draw the needle
Protected 成员函数 继承自 QwtDialNeedle
virtual void	drawKnob (QPainter *, double width, const QBrush &, bool sunken) const
	Draw the knob

详细描述

罗盘控件的磁针

成员枚举类型说明

Style

enum QwtCompassMagnetNeedle::Style

指针样式

枚举值
TriangleStyle	三角形指针
ThinStyle	细指针

构造及析构函数说明

QwtCompassMagnetNeedle()

QwtCompassMagnetNeedle::QwtCompassMagnetNeedle	(	Style	style = TriangleStyle,
		const QColor &	light = Qt::white,
		const QColor &	dark = Qt::red
	)

Constructor

构造函数

成员函数说明

drawNeedle()

void QwtCompassMagnetNeedle::drawNeedle ( QPainter *  painter, double  length, QPalette::ColorGroup  colorGroup  ) const

overrideprotectedvirtual

Draw the needle

参数

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

实现了 QwtDialNeedle.

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot/qwt_dial_needle.h
• /home/runner/work/QWT/QWT/src/plot/qwt_dial_needle.cpp