QwtDialSimpleNeedle类 参考

表盘控件的指针 更多...

#include <qwt_dial_needle.h>

类 QwtDialSimpleNeedle 继承关系图:

Public 类型
enum	Style { Arrow , Ray }
	指针样式 更多...

Public 成员函数
	QwtDialSimpleNeedle (Style, bool hasKnob=true, const QColor &mid=Qt::gray, const QColor &base=Qt::darkGray)
	Constructor
void	setWidth (double width)
	Set the width of the needle
double	width () const
	Return the width of the needle
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

表盘控件的指针

成员枚举类型说明

Style

enum QwtDialSimpleNeedle::Style

指针样式

枚举值
Arrow	箭头样式
Ray	从中心出发的直线

构造及析构函数说明

QwtDialSimpleNeedle()

QwtDialSimpleNeedle::QwtDialSimpleNeedle	(	Style	style,
		bool	hasKnob = true,
		const QColor &	mid = Qt::gray,
		const QColor &	base = Qt::darkGray
	)

Constructor

构造函数

成员函数说明

drawNeedle()

void QwtDialSimpleNeedle::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.

setWidth()

void QwtDialSimpleNeedle::setWidth

(

double

width

)

Set the width of the needle

设置指针的宽度

width()

double QwtDialSimpleNeedle::width

(

)

const

Return the width of the needle

返回指针的宽度

---

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