# QTextBlockFormat Class Reference
## [[QtGui](index.htm) module]
该QTextBlockFormat类提供格式设置信息的文本在一个块[QTextDocument](qtextdocument.html)。[More...](#details)
继承[QTextFormat](qtextformat.html)。
### Types
* `enum LineHeightTypes { SingleHeight, ProportionalHeight, FixedHeight, MinimumHeight, LineDistanceHeight }`
### Methods
* `__init__ (self)`
* `__init__ (self, QTextBlockFormat)`
* `Qt.Alignment alignment (self)`
* `float bottomMargin (self)`
* `int indent (self)`
* `bool isValid (self)`
* `float leftMargin (self)`
* `float lineHeight (self, float scriptLineHeight, float scaling)`
* `float lineHeight (self)`
* `int lineHeightType (self)`
* `bool nonBreakableLines (self)`
* `QTextFormat.PageBreakFlags pageBreakPolicy (self)`
* `float rightMargin (self)`
* `setAlignment (self, Qt.Alignment aalignment)`
* `setBottomMargin (self, float margin)`
* `setIndent (self, int aindent)`
* `setLeftMargin (self, float margin)`
* `setLineHeight (self, float height, int heightType)`
* `setNonBreakableLines (self, bool b)`
* `setPageBreakPolicy (self, QTextFormat.PageBreakFlags flags)`
* `setRightMargin (self, float margin)`
* `setTabPositions (self, list-of-QTextOption.Tab tabs)`
* `setTextIndent (self, float margin)`
* `setTopMargin (self, float margin)`
* `list-of-QTextOption.Tab tabPositions (self)`
* `float textIndent (self)`
* `float topMargin (self)`
* * *
## Detailed Description
该QTextBlockFormat类提供格式设置信息的文本在一个块[QTextDocument](qtextdocument.html)。
文档是由块的列表为代表的[QTextBlock](qtextblock.html)对象。每个块可以包含某种类型的产品，如一个文本段落，表格，列表或图像。每个块都有一个关联的QTextBlockFormat ，指定其特性。
为了照顾左到右，右到左的语言，你可以用setDirection （ ）设置一个块的方向。段落对齐方式设置与[setAlignment](qtextblockformat.html#setAlignment)（ ） 。利润是由控制[setTopMargin](qtextblockformat.html#setTopMargin)（ ）[setBottomMargin](qtextblockformat.html#setBottomMargin)（ ）[setLeftMargin](qtextblockformat.html#setLeftMargin)（ ）[setRightMargin](qtextblockformat.html#setRightMargin)（ ） 。整体缩进设置[setIndent](qtextblockformat.html#setIndent)（） ，与所述第一行的缩进[setTextIndent](qtextblockformat.html#setTextIndent)（ ） 。
行距设置与[setLineHeight](qtextblockformat.html#setLineHeight)（ ），并通过检索[lineHeight](qtextblockformat.html#lineHeight)（）和[lineHeightType](qtextblockformat.html#lineHeightType)（ ） 。行距可用的类型是在[LineHeightTypes](qtextblockformat.html#LineHeightTypes-enum)枚举。
断行可以启用和禁用[setNonBreakableLines](qtextblockformat.html#setNonBreakableLines)（ ） 。
用于绘制段落的背景的画笔设置与[setBackground()](qtextformat.html#setBackground)和文本的外观的其他方面可以通过使用自定义的[setProperty()](qtextformat.html#setProperty)与功能`OutlinePen`，`ForegroundBrush`和`BackgroundBrush` [QTextFormat.Property](qtextformat.html#Property-enum)值。
如果文本块是一个列表的一部分，它也可以有一个列表的格式，与该listFormat （）函数访问。
* * *
## Type Documentation
```
QTextBlockFormat.LineHeightTypes
```
这个枚举变量描述了不同类型的线间距支持段落可以有。
| Constant | Value | Description |
| --- | --- | --- |
| `QTextBlockFormat.SingleHeight` | `0` | 这是默认行高：单倍行距。 |
| `QTextBlockFormat.ProportionalHeight` | `1` | 这个设置的间距成正比线（百分比） 。例如，设置为200双间距。 |
| `QTextBlockFormat.FixedHeight` | `2` | 这将设置行高为固定行高（以像素为单位） 。 |
| `QTextBlockFormat.MinimumHeight` | `3` | 此设置最小行高（以像素为单位） 。 |
| `QTextBlockFormat.LineDistanceHeight` | `4` | 这增加了线路之间的指定高度（以像素为单位） 。 |
这个枚举被引入或修改的Qt 4.8 。
**See also** [lineHeight](qtextblockformat.html#lineHeight)（ ）[lineHeightType](qtextblockformat.html#lineHeightType)（）和[setLineHeight](qtextblockformat.html#setLineHeight)（ ） 。
* * *
## Method Documentation
```
QTextBlockFormat.__init__ (self)
```
构造一个新的[QTextBlockFormat](qtextblockformat.html)。
```
QTextBlockFormat.__init__ (self, QTextBlockFormat)
```
```
Qt.Alignment QTextBlockFormat.alignment (self)
```
[
返回段落的对齐方式。
](index.htm)
[**See also**](index.htm) [setAlignment](qtextblockformat.html#setAlignment)（ ） 。
```
float QTextBlockFormat.bottomMargin (self)
```
返回段的下边界。
**See also** [setBottomMargin](qtextblockformat.html#setBottomMargin)（）和[topMargin](qtextblockformat.html#topMargin)（ ） 。
```
int QTextBlockFormat.indent (self)
```
返回段落的缩进。
**See also** [setIndent](qtextblockformat.html#setIndent)（ ） 。
```
bool QTextBlockFormat.isValid (self)
```
返回True如果该块格式是有效的，否则返回False 。
```
float QTextBlockFormat.leftMargin (self)
```
返回段落的左边距。
**See also** [setLeftMargin](qtextblockformat.html#setLeftMargin)（ ）[rightMargin](qtextblockformat.html#rightMargin)（）和[indent](qtextblockformat.html#indent)（ ） 。
```
float QTextBlockFormat.lineHeight (self, float scriptLineHeight, float scaling)
```
返回该行的高度，在基于由给定的脚本行的高度的段落_scriptLineHeight_和指定的_scaling_因素。
返回的值也依赖于给定的[LineHeightType](qtextformat.html#Property-enum)该段以及作为[LineHeight](qtextformat.html#Property-enum)已经被设置为段设置。
缩放是需要的高度，其中包括固定像素数量，能够适当地调整它们进行打印。
此功能被引入Qt的4.8 。
**See also** [LineHeightTypes](qtextblockformat.html#LineHeightTypes-enum)，[setLineHeight](qtextblockformat.html#setLineHeight)（）和[lineHeightType](qtextblockformat.html#lineHeightType)（ ） 。
```
float QTextBlockFormat.lineHeight (self)
```
这将返回[LineHeight](qtextformat.html#Property-enum)属性的段落。
此功能被引入Qt的4.8 。
**See also** [LineHeightTypes](qtextblockformat.html#LineHeightTypes-enum)，[setLineHeight](qtextblockformat.html#setLineHeight)（）和[lineHeightType](qtextblockformat.html#lineHeightType)（ ） 。
```
int QTextBlockFormat.lineHeightType (self)
```
这将返回[LineHeightType](qtextformat.html#Property-enum)该段的属性。
此功能被引入Qt的4.8 。
**See also** [LineHeightTypes](qtextblockformat.html#LineHeightTypes-enum)，[setLineHeight](qtextblockformat.html#setLineHeight)（）和[lineHeight](qtextblockformat.html#lineHeight)（ ） 。
```
bool QTextBlockFormat.nonBreakableLines (self)
```
返回True如果段落中的行是不易碎，否则返回False 。
**See also** [setNonBreakableLines](qtextblockformat.html#setNonBreakableLines)（ ） 。
```
QTextFormat.PageBreakFlags QTextBlockFormat.pageBreakPolicy (self)
```
[](index.htm)
[返回段落中的当前设置的分页符政策。默认值是](index.htm)[QTextFormat.PageBreak_Auto](qtextformat.html#PageBreakFlag-enum)。
这个函数中引入了Qt 4.2中。
**See also** [setPageBreakPolicy](qtextblockformat.html#setPageBreakPolicy)（ ） 。
```
float QTextBlockFormat.rightMargin (self)
```
返回段落的右边距。
**See also** [setRightMargin](qtextblockformat.html#setRightMargin)（）和[leftMargin](qtextblockformat.html#leftMargin)（ ） 。
```
QTextBlockFormat.setAlignment (self, Qt.Alignment aalignment)
```
设置段落的_alignment_。
**See also** [alignment](qtextblockformat.html#alignment)（ ） 。
```
QTextBlockFormat.setBottomMargin (self, float margin)
```
设置段落的底部_margin_。
**See also** [bottomMargin](qtextblockformat.html#bottomMargin)（ ）[setTopMargin](qtextblockformat.html#setTopMargin)（ ）[setLeftMargin](qtextblockformat.html#setLeftMargin)（）和[setRightMargin](qtextblockformat.html#setRightMargin)（ ） 。
```
QTextBlockFormat.setIndent (self, int aindent)
```
设置段落的_indentation_。边距独立设置的凹槽构成的[setLeftMargin](qtextblockformat.html#setLeftMargin)（）和[setTextIndent](qtextblockformat.html#setTextIndent)（ ） 。该_indentation_是一个整数相乘与广泛的文档标准的缩进，导致该段的实际缩进。
**See also** [indent](qtextblockformat.html#indent)（）和[QTextDocument.indentWidth](qtextdocument.html#indentWidth-prop)（ ） 。
```
QTextBlockFormat.setLeftMargin (self, float margin)
```
设置段落的左_margin_。压痕可分别与应用[setIndent](qtextblockformat.html#setIndent)（ ） 。
**See also** [leftMargin](qtextblockformat.html#leftMargin)（ ）[setRightMargin](qtextblockformat.html#setRightMargin)（ ）[setTopMargin](qtextblockformat.html#setTopMargin)（）和[setBottomMargin](qtextblockformat.html#setBottomMargin)（ ） 。
```
QTextBlockFormat.setLineHeight (self, float height, int heightType)
```
设置行高的段落，通过给定的值_height_这是依赖于_heightType_在由所述的方式[LineHeightTypes](qtextblockformat.html#LineHeightTypes-enum)枚举。
此功能被引入Qt的4.8 。
**See also** [LineHeightTypes](qtextblockformat.html#LineHeightTypes-enum)，[lineHeight](qtextblockformat.html#lineHeight)（）和[lineHeightType](qtextblockformat.html#lineHeightType)（ ） 。
```
QTextBlockFormat.setNonBreakableLines (self, bool b)
```
If _b_诚然，在该段线路被视为非易碎，否则他们是易碎的。
**See also** [nonBreakableLines](qtextblockformat.html#nonBreakableLines)（ ） 。
```
QTextBlockFormat.setPageBreakPolicy (self, QTextFormat.PageBreakFlags flags)
```
设置为段落分页政策_policy_。
这个函数中引入了Qt 4.2中。
**See also** [pageBreakPolicy](qtextblockformat.html#pageBreakPolicy)（ ） 。
```
QTextBlockFormat.setRightMargin (self, float margin)
```
设置段落的权利_margin_。
**See also** [rightMargin](qtextblockformat.html#rightMargin)（ ）[setLeftMargin](qtextblockformat.html#setLeftMargin)（ ）[setTopMargin](qtextblockformat.html#setTopMargin)（）和[setBottomMargin](qtextblockformat.html#setBottomMargin)（ ） 。
```
QTextBlockFormat.setTabPositions (self, list-of-QTextOption.Tab tabs)
```
设置文本块的制表符位置，以那些由指定的_tabs_。
此功能被引入Qt的4.4 。
**See also** [tabPositions](qtextblockformat.html#tabPositions)（ ） 。
```
QTextBlockFormat.setTextIndent (self, float margin)
```
设置_indent_对于在块中的第一行。这允许一个段落的第一行缩进不同的其他线，提高文字的可读性。
**See also** [textIndent](qtextblockformat.html#textIndent)（ ）[setLeftMargin](qtextblockformat.html#setLeftMargin)（ ）[setRightMargin](qtextblockformat.html#setRightMargin)（ ）[setTopMargin](qtextblockformat.html#setTopMargin)（）和[setBottomMargin](qtextblockformat.html#setBottomMargin)（ ） 。
```
QTextBlockFormat.setTopMargin (self, float margin)
```
设置段落的顶部_margin_。
**See also** [topMargin](qtextblockformat.html#topMargin)（ ）[setBottomMargin](qtextblockformat.html#setBottomMargin)（ ）[setLeftMargin](qtextblockformat.html#setLeftMargin)（）和[setRightMargin](qtextblockformat.html#setRightMargin)（ ） 。
```
list-of-QTextOption.Tab QTextBlockFormat.tabPositions (self)
```
返回的文本块中定义的选项卡位置的列表。
此功能被引入Qt的4.4 。
**See also** [setTabPositions](qtextblockformat.html#setTabPositions)（ ） 。
```
float QTextBlockFormat.textIndent (self)
```
返回段落的文本缩进。
**See also** [setTextIndent](qtextblockformat.html#setTextIndent)（ ） 。
```
float QTextBlockFormat.topMargin (self)
```
返回段的上边界。
**See also** [setTopMargin](qtextblockformat.html#setTopMargin)（）和[bottomMargin](qtextblockformat.html#bottomMargin)（ ） 。
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- QPyNullVariant Class Reference
- QPyTextObject Class Reference
- QQuaternion Class Reference
- QRadialGradient Class Reference
- QRadioButton Class Reference
- QRawFont Class Reference
- QReadLocker Class Reference
- QReadWriteLock Class Reference
- QRect Class Reference
- QRectF Class Reference
- QRegExp Class Reference
- QRegExpValidator Class Reference
- QRegion Class Reference
- QResizeEvent Class Reference
- QResource Class Reference
- QRubberBand Class Reference
- QRunnable Class Reference
- QScriptClass Class Reference
- QScriptClassPropertyIterator Class Reference
- QScriptContext Class Reference
- QScriptContextInfo Class Reference
- QScriptEngine Class Reference
- QScriptEngineAgent Class Reference
- QScriptEngineDebugger Class Reference
- QScriptString Class Reference
- QScriptSyntaxCheckResult Class Reference
- QScriptValue Class Reference
- QScriptValueIterator Class Reference
- QScrollArea Class Reference
- QScrollBar Class Reference
- QSemaphore Class Reference
- QSequentialAnimationGroup Class Reference
- QSessionManager Class Reference
- QSettings Class Reference
- QSharedMemory Class Reference
- QShortcut Class Reference
- QShortcutEvent Class Reference
- QShowEvent Class Reference
- QSignalMapper Class Reference
- QSignalTransition Class Reference
- QSimpleXmlNodeModel Class Reference
- QSize Class Reference
- QSizeF Class Reference
- QSizeGrip Class Reference
- QSizePolicy Class Reference
- QSlider Class Reference
- QSocketNotifier Class Reference
- QSortFilterProxyModel Class Reference
- QSound Class Reference
- QSourceLocation Class Reference
- QSpacerItem Class Reference
- QSpinBox Class Reference
- QSplashScreen Class Reference
- QSplitter Class Reference
- QSplitterHandle Class Reference
- QSql Class Reference
- QSqlDatabase Class Reference
- QSqlDriver Class Reference
- QSqlDriverCreatorBase Class Reference
- QSqlError Class Reference
- QSqlField Class Reference
- QSqlIndex Class Reference
- QSqlQuery Class Reference
- QSqlQueryModel Class Reference
- QSqlRecord Class Reference
- QSqlRelation Class Reference
- QSqlRelationalDelegate Class Reference
- QSqlRelationalTableModel Class Reference
- QSqlResult Class Reference
- QSqlTableModel Class Reference
- Qt4.7文档翻译：Qt样式单参考,Qt Style Sheets Reference
- QSsl Class Reference
- QSslCertificate Class Reference
- QSslCipher Class Reference
- QSslConfiguration Class Reference
- QSslError Class Reference
- QSslKey Class Reference
- QSslSocket Class Reference
- QStackedLayout Class Reference
- QStackedWidget Class Reference
- QStandardItem Class Reference
- QStandardItemModel Class Reference
- QState Class Reference
- QStateMachine Class Reference
- QStaticText Class Reference
- QStatusBar Class Reference
- QStatusTipEvent Class Reference
- QString Class Reference
- QStringList Class Reference
- QStringListModel Class Reference
- QStringMatcher Class Reference
- QStringRef Class Reference
- QStyle Class Reference
- QStyledItemDelegate Class Reference
- QStyleFactory Class Reference
- QStyleHintReturn Class Reference
- QStyleHintReturnMask Class Reference
- QStyleHintReturnVariant Class Reference
- QStyleOption Class Reference
- QStyleOptionButton Class Reference
- QStyleOptionComboBox Class Reference
- QStyleOptionComplex Class Reference
- QStyleOptionDockWidget Class Reference
- QStyleOptionDockWidgetV2 Class Reference
- QStyleOptionFocusRect Class Reference
- QStyleOptionFrame Class Reference
- QStyleOptionFrameV2 Class Reference
- QStyleOptionFrameV3 Class Reference
- QStyleOptionGraphicsItem Class Reference
- QStyleOptionGroupBox Class Reference
- QStyleOptionHeader Class Reference
- QStyleOptionMenuItem Class Reference
- QStyleOptionProgressBar Class Reference
- QStyleOptionProgressBarV2 Class Reference
- QStyleOptionRubberBand Class Reference
- QStyleOptionSizeGrip Class Reference
- QStyleOptionSlider Class Reference
- QStyleOptionSpinBox Class Reference
- QStyleOptionTab Class Reference
- QStyleOptionTabBarBase Class Reference
- QStyleOptionTabBarBaseV2 Class Reference
- QStyleOptionTabV2 Class Reference
- QStyleOptionTabV3 Class Reference
- QStyleOptionTabWidgetFrame Class Reference
- QStyleOptionTabWidgetFrameV2 Class Reference
- QStyleOptionTitleBar Class Reference
- QStyleOptionToolBar Class Reference
- QStyleOptionToolBox Class Reference
- QStyleOptionToolBoxV2 Class Reference
- QStyleOptionToolButton Class Reference
- QStyleOptionViewItem Class Reference
- QStyleOptionViewItemV2 Class Reference
- QStyleOptionViewItemV3 Class Reference
- QStyleOptionViewItemV4 Class Reference
- QStylePainter Class Reference
- QSvgGenerator Class Reference
- QSvgRenderer Class Reference
- QSvgWidget Class Reference
- QSwipeGesture Class Reference
- QSyntaxHighlighter Class Reference
- QSysInfo Class Reference
- QSystemLocale Class Reference
- QSystemSemaphore Class Reference
- QSystemTrayIcon Class Reference
- Qt Class Reference
- QTabBar Class Reference
- QTabletEvent Class Reference
- QTableView Class Reference
- QTableWidget Class Reference
- QTableWidgetItem Class Reference
- QTableWidgetSelectionRange Class Reference
- QTabWidget Class Reference
- QTapAndHoldGesture Class Reference
- QTapGesture Class Reference
- QTcpServer Class Reference
- QTcpSocket Class Reference
- QTemporaryFile Class Reference
- QTest Class Reference
- QTextBlock Class Reference
- QTextBlockFormat Class Reference
- QTextBlockGroup Class Reference
- QTextBlockUserData Class Reference
- QTextBoundaryFinder Class Reference
- QTextBrowser Class Reference
- QTextCharFormat Class Reference
- QTextCodec Class Reference
- QTextCursor Class Reference
- QTextDecoder Class Reference
- QTextDocument Class Reference
- QTextDocumentFragment Class Reference
- QTextDocumentWriter Class Reference
- QTextEdit Class Reference
- QTextEncoder Class Reference
- QTextFormat Class Reference
- QTextFragment Class Reference
- QTextFrame Class Reference
- QTextFrameFormat Class Reference
- QTextImageFormat Class Reference
- QTextInlineObject Class Reference
- QTextItem Class Reference
- QTextLayout Class Reference
- QTextLength Class Reference
- QTextLine Class Reference
- QTextList Class Reference
- QTextListFormat Class Reference
- QTextObject Class Reference
- QTextObjectInterface Class Reference
- QTextOption Class Reference
- QTextStream Class Reference
- QTextTable Class Reference
- QTextTableCell Class Reference
- QTextTableCellFormat Class Reference
- QTextTableFormat Class Reference
- QThread Class Reference
- QThreadPool Class Reference
- QTime Class Reference
- QTimeEdit Class Reference
- QTimeLine Class Reference
- QTimer Class Reference
- QTimerEvent Class Reference
- QToolBar Class Reference
- QToolBox Class Reference
- QToolButton Class Reference
- QToolTip Class Reference
- QTouchEvent Class Reference
- Reference
- QTransform Class Reference
- QTranslator Class Reference
- QTreeView Class Reference
- QTreeWidget Class Reference
- QTreeWidgetItem Class Reference
- QTreeWidgetItemIterator Class Reference
- QUdpSocket Class Reference
- QUndoCommand Class Reference
- QUndoGroup Class Reference
- QUndoStack Class Reference
- QUndoView Class Reference
- QUrl Class Reference
- QUrlInfo Class Reference
- QUuid Class Reference
- QValidator Class Reference
- QVariant Class Reference
- QVariantAnimation Class Reference
- QVBoxLayout Class Reference
- QVector2D Class Reference
- QVector3D Class Reference
- QVector4D Class Reference
- QVideoFrame Class Reference
- QVideoSurfaceFormat Class Reference
- QWaitCondition Class Reference
- QWebDatabase Class Reference
- QWebElement Class Reference
- QWebElementCollection Class Reference
- QWebFrame Class Reference
- QWebHistory Class Reference
- QWebHistoryInterface Class Reference
- QWebHistoryItem Class Reference
- QWebHitTestResult Class Reference
- QWebInspector Class Reference
- QWebPage Class Reference
- QWebPluginFactory Class Reference
- QWebSecurityOrigin Class Reference
- QWebSettings Class Reference
- QWebView Class Reference
- QWhatsThis Class Reference
- QWhatsThisClickedEvent Class Reference
- QWheelEvent Class Reference
- QWidget Class Reference
- QWidgetAction Class Reference
- QWidgetItem Class Reference
- QWindowStateChangeEvent Class Reference
- QWizard Class Reference
- QWizardPage Class Reference
- QWorkspace Class Reference
- QWriteLocker Class Reference
- QX11EmbedContainer Class Reference
- QX11EmbedWidget Class Reference
- QX11Info Class Reference
- QXmlAttributes Class Reference
- QXmlContentHandler Class Reference
- QXmlDeclHandler Class Reference
- QXmlDefaultHandler Class Reference
- QXmlDTDHandler Class Reference
- QXmlEntityResolver Class Reference
- QXmlErrorHandler Class Reference
- QXmlFormatter Class Reference
- QXmlInputSource Class Reference
- QXmlItem Class Reference
- QXmlLexicalHandler Class Reference
- QXmlLocator Class Reference
- QXmlName Class Reference
- QXmlNamePool Class Reference
- QXmlNamespaceSupport Class Reference
- QXmlNodeModelIndex Class Reference
- QXmlParseException Class Reference
- QXmlQuery Class Reference
- QXmlReader Class Reference
- QXmlResultItems Class Reference
- QXmlSchema Class Reference
- QXmlSchemaValidator Class Reference
- QXmlSerializer Class Reference
- QXmlSimpleReader Class Reference
- QXmlStreamAttribute Class Reference
- QXmlStreamAttributes Class Reference
- QXmlStreamEntityDeclaration Class Reference
- QXmlStreamEntityResolver Class Reference
- QXmlStreamNamespaceDeclaration Class Reference
- QXmlStreamNotationDeclaration Class Reference
- QXmlStreamReader Class Reference
- QXmlStreamWriter Class Reference