QwtPolarItemDict类 参考

A dictionary for polar plot items 更多...

#include <qwt_polar_itemdict.h>

类 QwtPolarItemDict 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtPolarItemDict ()
	Constructor
	~QwtPolarItemDict ()
	Destructor
void	setAutoDelete (bool)
	Set auto delete
bool	autoDelete () const
	Get auto delete
const QwtPolarItemList &	itemList () const
	Get the item list
void	detachItems (int rtti=QwtPolarItem::Rtti_PolarItem, bool autoDelete=true)
	Detach items

Protected 成员函数
void	insertItem (QwtPolarItem *)
	Insert an item
void	removeItem (QwtPolarItem *)
	Remove an item

详细描述

A dictionary for polar plot items

QwtPolarItemDict organizes polar plot items in increasing z-order. If autoDelete() is enabled, all attached items will be deleted in the destructor of the dictionary.

参见

QwtPolarItem::attach(), QwtPolarItem::detach(), QwtPolarItem::z()

构造及析构函数说明

QwtPolarItemDict()

QwtPolarItemDict::QwtPolarItemDict ( )

explicit

Constructor

Auto deletion is enabled.

参见

setAutoDelete, attachItem

~QwtPolarItemDict()

QwtPolarItemDict::~QwtPolarItemDict

(

)

Destructor

If autoDelete is on, all attached items will be deleted.

参见

setAutoDelete, autoDelete, attachItem

成员函数说明

autoDelete()

bool QwtPolarItemDict::autoDelete

(

)

const

Get auto delete

Check if auto deletion is enabled

返回

true if auto deletion is enabled

参见

setAutoDelete, attachItem

detachItems()

void QwtPolarItemDict::detachItems	(	int	rtti = QwtPolarItem::Rtti_PolarItem,
		bool	autoDelete = true
	)

Detach items

Detach items from the dictionary

参数

rtti	In case of QwtPolarItem::Rtti_PolarItem detach all items, otherwise only those items of the type rtti.
autoDelete	If true, delete all detached items

insertItem()

void QwtPolarItemDict::insertItem ( QwtPolarItem *  item )

protected

Insert an item

Insert a plot item

参数

item

PlotItem

参见

removeItem()

itemList()

const QwtPolarItemList & QwtPolarItemDict::itemList

(

)

const

Get the item list

Get a QwtPolarItemList of all attached plot items

返回

List of all attached plot items

注解

Use caution when iterating these lists, as removing/detaching an item will invalidate the iterator. Instead you can place pointers to objects to be removed in a removal list, and traverse that list later.

removeItem()

void QwtPolarItemDict::removeItem ( QwtPolarItem *  item )

protected

Remove an item

Remove a plot item

参数

item

PlotItem

参见

insertItem()

setAutoDelete()

void QwtPolarItemDict::setAutoDelete

(

bool

autoDelete

)

Set auto delete

Enable/Disable auto deletion

If Auto deletion is on, all attached plot items will be deleted in the destructor of QwtPolarItemDict. The default value is on.

参数

autoDelete

Auto delete flag

参见

autoDelete, attachItem

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该类的文档由以下文件生成:

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