# QTextDocumentWriter Class Reference
## [[QtGui](index.htm) module]
該QTextDocumentWriter類提供與格式無關的接口，用于編寫[QTextDocument](qtextdocument.html)對文件或其他裝置。[More...](#details)
### Methods
* `__init__ (self)`
* `__init__ (self, QIODevice?device, QByteArray?format)`
* `__init__ (self, QString?fileName, QByteArray?format?=?QByteArray())`
* `QTextCodec codec (self)`
* `QIODevice device (self)`
* `QString fileName (self)`
* `QByteArray format (self)`
* `setCodec (self, QTextCodec?codec)`
* `setDevice (self, QIODevice?device)`
* `setFileName (self, QString?fileName)`
* `setFormat (self, QByteArray?format)`
* `bool write (self, QTextDocument?document)`
* `bool write (self, QTextDocumentFragment?fragment)`
### Static Methods
* `list-of-QByteArray supportedDocumentFormats ()`
* * *
## Detailed Description
該QTextDocumentWriter類提供與格式無關的接口，用于編寫[QTextDocument](qtextdocument.html)對文件或其他裝置。
寫一個文件，構造一個QTextDocumentWriter對象可以是文件名或一個設備對象，并指定要寫入的文件格式。你可以構造一個作家，并使用設定的格式[setFormat](qtextdocumentwriter.html#setFormat)（ ）以后。
Call [write](qtextdocumentwriter.html#write)（）寫的文件到該設備。如果文檔被成功寫入，這個函數返回True。但是，如果寫文件時發生錯誤，將返回False 。
Call [supportedDocumentFormats](qtextdocumentwriter.html#supportedDocumentFormats)（ ）對于格式QTextDocumentWriter可以寫一個清單。
由于所支持的輸出格式的能力有很大的不同，筆者簡單地輸出各種格式對象的適當子集。這通常包括格式化的文本和文檔中包含的圖像。
* * *
## Method Documentation
```
QTextDocumentWriter.__init__ (self)
```
構造一個空[QTextDocumentWriter](qtextdocumentwriter.html)對象。寫作之前，你必須調用[setFormat](qtextdocumentwriter.html#setFormat)（ ）來設置文檔的格式，然后[setDevice](qtextdocumentwriter.html#setDevice)（）或[setFileName](qtextdocumentwriter.html#setFileName)（ ） 。
```
QTextDocumentWriter.__init__ (self, QIODevice?device, QByteArray?format)
```
構造一個[QTextDocumentWriter](qtextdocumentwriter.html)對象寫入給定的_device_在由指定的文檔格式_format_。
```
QTextDocumentWriter.__init__ (self, QString?fileName, QByteArray?format?=?QByteArray())
```
構造一個[QTextDocumentWriter](qtextdocumentwriter.html)對象將寫入一個文件名為_fileName_使用由指定的文件格式_format_。如果_format_不設置，[QTextDocumentWriter](qtextdocumentwriter.html)將檢測到的文件格式通過檢查的延伸_fileName_。
```
QTextCodec QTextDocumentWriter.codec (self)
```
[
返回當前分配給該作家的編解碼器。
](qtextcodec.html)
[**See also**](qtextcodec.html) [setCodec](qtextdocumentwriter.html#setCodec)（ ） 。
```
QIODevice QTextDocumentWriter.device (self)
```
[
返回當前分配的設備，或者0，如果沒有設備已經被分配。
](qiodevice.html)
[**See also**](qiodevice.html) [setDevice](qtextdocumentwriter.html#setDevice)（ ） 。
```
QString QTextDocumentWriter.fileName (self)
```
如果當前分配裝置是[QFile](qfile.html)，或者如果[setFileName](qtextdocumentwriter.html#setFileName)（）被調用時，該函數返回到被寫入到該文件的名稱。在所有其他情況下，它返回一個空字符串。
**See also** [setFileName](qtextdocumentwriter.html#setFileName)（）和[setDevice](qtextdocumentwriter.html#setDevice)（ ） 。
```
QByteArray QTextDocumentWriter.format (self)
```
[
返回用于書寫文檔的格式。
](qbytearray.html)
[**See also**](qbytearray.html) [setFormat](qtextdocumentwriter.html#setFormat)（ ） 。
```
QTextDocumentWriter.setCodec (self, QTextCodec?codec)
```
設置編解碼器，該流_codec_。編解碼器是用于編碼被寫入任何數據。默認情況下，[QTextDocumentWriter](qtextdocumentwriter.html)使用UTF-8 。
**See also** [codec](qtextdocumentwriter.html#codec)（ ） 。
```
QTextDocumentWriter.setDevice (self, QIODevice?device)
```
集作家的設備到_device_規定。如果設備已經設置，老設備被移除，但在其他方面保持不變。
如果該設備尚未打開，[QTextDocumentWriter](qtextdocumentwriter.html)將嘗試在打開設備[QIODevice.WriteOnly](qiodevice.html#OpenModeFlag-enum)模式通過調用open （ ） 。
**Note:**這不會對某些設備，如工作[QProcess](qprocess.html)，[QTcpSocket](qtcpsocket.html)和[QUdpSocket](qudpsocket.html)，其中該裝置之前，需要一些配置可以被打開。
**See also** [device](qtextdocumentwriter.html#device)（）和[setFileName](qtextdocumentwriter.html#setFileName)（ ） 。
```
QTextDocumentWriter.setFileName (self, QString?fileName)
```
設置文件的要寫入的名稱_fileName_。在內部，[QTextDocumentWriter](qtextdocumentwriter.html)將創建一個[QFile](qfile.html)并在打開它[QIODevice.WriteOnly](qiodevice.html#OpenModeFlag-enum)模式，并編寫文檔時使用這個文件。
**See also** [fileName](qtextdocumentwriter.html#fileName)（）和[setDevice](qtextdocumentwriter.html#setDevice)（ ） 。
```
QTextDocumentWriter.setFormat (self, QByteArray?format)
```
設置用于寫文件的格式_format_規定。_format_是不區分大小寫的文本字符串。例如：
```
[QTextDocumentWriter](qtextdocumentwriter.html) writer;
writer.setFormat("odf"); // same as writer.setFormat("ODF");
```
您可以致電[supportedDocumentFormats](qtextdocumentwriter.html#supportedDocumentFormats)（ ）對于格式的完整列表[QTextDocumentWriter](qtextdocumentwriter.html)支持。
**See also** [format](qtextdocumentwriter.html#format)（ ） 。
```
list-of-QByteArray QTextDocumentWriter.supportedDocumentFormats ()
```
返回的文檔格式所支持的列表[QTextDocumentWriter](qtextdocumentwriter.html)。
默認情況下， Qt可以編寫以下格式：
| Format | Description |
| --- | --- |
| plaintext | Plain text |
| HTML | HyperText Markup Language |
| ODF | OpenDocument Format |
**See also** [setFormat](qtextdocumentwriter.html#setFormat)（ ） 。
```
bool QTextDocumentWriter.write (self, QTextDocument?document)
```
將給定_document_到指定的裝置或檔案，并成功返回True ，否則返回False 。
```
bool QTextDocumentWriter.write (self, QTextDocumentFragment?fragment)
```
通過寫入指定的文件片段_fragment_到指定的裝置或檔案，并成功返回True ，否則返回False 。
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- 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