内容

• 保护函数
• 详细描述

QTextBlockGroup 类

QTextBlockGroup class provides a container for text blocks within a QTextDocument . 更多...

头：	#include <QTextBlockGroup>
qmake:	QT += gui
继承：	QTextObject
继承者：	QTextList

• 所有成员列表，包括继承成员

注意： 此类的所有函数 可重入 .

保护函数

	QTextBlockGroup (QTextDocument * document )
	~QTextBlockGroup ()
virtual void	blockFormatChanged (const QTextBlock & block )
virtual void	blockInserted (const QTextBlock & block )
QList<QTextBlock>	blockList () const
virtual void	blockRemoved (const QTextBlock & block )

• 1 保护函数继承自 QTextObject
• 9 保护函数继承自 QObject

额外继承成员

• 1 特性继承自 QObject
• 4 public functions inherited from QTextObject
• 32 公共函数继承自 QObject
• 1 公共槽继承自 QObject
• 2 信号继承自 QObject
• 11 静态公共成员继承自 QObject

详细描述

QTextBlockGroup class provides a container for text blocks within a QTextDocument .

Block groups can be used to organize blocks of text within a document. They maintain an up-to-date list of the text blocks that belong to them, even when text blocks are being edited.

Each group has a parent document which is specified when the group is constructed.

Text blocks can be inserted into a group with blockInserted (), and removed with blockRemoved (). If a block's format is changed, blockFormatChanged () 被调用。

The list of blocks in the group is returned by blockList (). Note that the blocks in the list are not necessarily adjacent elements in the document; for example, the top-level items in a multi-level list will be separated by the items in lower levels of the list.

另请参阅 QTextBlock and QTextDocument .

成员函数文档编制

[protected] QTextBlockGroup:: QTextBlockGroup ( QTextDocument * document )

创建新的新块组为给定 document .

警告： This function should only be called from QTextDocument::createObject ().

[protected] QTextBlockGroup:: ~QTextBlockGroup ()

Destroys this block group; the blocks are not deleted, they simply don't belong to this block anymore.

[virtual protected] void QTextBlockGroup:: blockFormatChanged (const QTextBlock & block )

This function is called whenever the specified block of text is changed. The text block is a member of this group.

基类实现什么都不做。

[virtual protected] void QTextBlockGroup:: blockInserted (const QTextBlock & block )

Appends the given block to the end of the group.

警告： If you reimplement this function you must call the base class implementation.

[protected] QList < QTextBlock > QTextBlockGroup:: blockList () const

Returns a (possibly empty) list of all the blocks that are part of the block group.

[virtual protected] void QTextBlockGroup:: blockRemoved (const QTextBlock & block )

移除给定 block from the group; the block itself is not deleted, it simply isn't a member of this group anymore.