# QFSFileEngine Class Reference
## [[QtCore](index.htm) module]
该QFSFileEngine类实现Qt的默认文件引擎。[More...](#details)
继承[QAbstractFileEngine](qabstractfileengine.html)。
### Methods
* `__init__ (self)`
* `__init__ (self, QString file)`
* `bool caseSensitive (self)`
* `bool close (self)`
* `bool copy (self, QString newName)`
* `QStringList entryList (self, QDir.Filters filters, QStringList filterNames)`
* `QAbstractFileEngine.FileFlags fileFlags (self, QAbstractFileEngine.FileFlags type)`
* `QString fileName (self, QAbstractFileEngine.FileName file)`
* `QDateTime fileTime (self, QAbstractFileEngine.FileTime time)`
* `bool flush (self)`
* `int handle (self)`
* `bool isRelativePath (self)`
* `bool isSequential (self)`
* `bool link (self, QString newName)`
* `bool mkdir (self, QString dirName, bool createParentDirectories)`
* `bool open (self, QIODevice.OpenMode openMode)`
* `bool open (self, QIODevice.OpenMode openMode, int fd, QFile.FileHandleFlags handleFlags)`
* `bool open (self, QIODevice.OpenMode flags, int fd)`
* `QString owner (self, QAbstractFileEngine.FileOwner)`
* `int ownerId (self, QAbstractFileEngine.FileOwner)`
* `int pos (self)`
* `str read (self, int maxlen)`
* `str readLine (self, int maxlen)`
* `bool remove (self)`
* `bool rename (self, QString newName)`
* `bool rmdir (self, QString dirName, bool recurseParentDirectories)`
* `bool seek (self, int)`
* `setFileName (self, QString file)`
* `bool setPermissions (self, int perms)`
* `bool setSize (self, int size)`
* `int size (self)`
* `int write (self, str data)`
### Static Methods
* `QString currentPath (QString fileName = QString())`
* `list-of-QFileInfo drives ()`
* `QString homePath ()`
* `QString rootPath ()`
* `bool setCurrentPath (QString path)`
* `QString tempPath ()`
* * *
## Detailed Description
该QFSFileEngine类实现Qt的默认文件引擎。
这个类是文件引擎框架Qt中的一部分。如果只想访问文件或目录,请使用[QFile](qfile.html),[QFileInfo](qfileinfo.html) or [QDir](qdir.html)代替。
QFSFileEngine是默认的文件引擎,访问普通文件。它是提供了方便;通过继承这个类,你可以稍微改变它的行为,而无需编写一个完整的[QAbstractFileEngine](qabstractfileengine.html)子类。要安装自定义文件引擎,你也必须继承[QAbstractFileEngineHandler](qabstractfileenginehandler.html)并创建处理程序的实例。
它也可以是有用的,直接创建一个QFSFileEngine对象,如果你需要使用内部的本地文件系统[QAbstractFileEngine.create](qabstractfileengine.html#create)() ,以避免递归(如更高层次的类往往称之为[QAbstractFileEngine.create](qabstractfileengine.html#create)())。
* * *
## Method Documentation
```
QFSFileEngine.__init__ (self)
```
构造一个[QFSFileEngine](qfsfileengine.html)。
```
QFSFileEngine.__init__ (self, QString file)
```
构造一个[QFSFileEngine](qfsfileengine.html)为文件名_file_。
```
bool QFSFileEngine.caseSensitive (self)
```
从重新实现[QAbstractFileEngine.caseSensitive](qabstractfileengine.html#caseSensitive)( ) 。
适用于Windows ,假为Unix ,则返回True 。
```
bool QFSFileEngine.close (self)
```
从重新实现[QAbstractFileEngine.close](qabstractfileengine.html#close)( ) 。
```
bool QFSFileEngine.copy (self, QString newName)
```
从重新实现[QAbstractFileEngine.copy](qabstractfileengine.html#copy)( ) 。
对于Windows,将文件复制到文件_copyName_。
未实现为Unix 。
```
QString QFSFileEngine.currentPath (QString fileName = QString())
```
对于Unix ,返回文件引擎的当前工作目录。
对于Windows ,返回当前路径由指定的驱动器所使用的文件引擎的规范化形式_fileName_。在Windows中,每个驱动器都有自己的当前目录,因此不同的路径返回的文件名,包括不同的驱动器名称(如A :或C :) 。
**See also** [setCurrentPath](qfsfileengine.html#setCurrentPath)( ) 。
```
list-of-QFileInfo QFSFileEngine.drives ()
```
对于Windows ,返回文件系统的驱动器列表作为列表[QFileInfo](qfileinfo.html)对象。在UNIX上, Mac OS X和Windows CE中,只返回根路径。在Windows中,该函数返回所有驱动器(A : , C:,D :等) 。
对于Unix ,该列表仅包含根路径“ / ” 。
```
QStringList QFSFileEngine.entryList (self, QDir.Filters filters, QStringList filterNames)
```
```
QAbstractFileEngine.FileFlags QFSFileEngine.fileFlags (self, QAbstractFileEngine.FileFlags type)
```
[](index.htm)
[从重新实现](index.htm)[QAbstractFileEngine.fileFlags](qabstractfileengine.html#fileFlags)( ) 。
```
QString QFSFileEngine.fileName (self, QAbstractFileEngine.FileName file)
```
从重新实现[QAbstractFileEngine.fileName](qabstractfileengine.html#fileName)( ) 。
**See also** [setFileName](qfsfileengine.html#setFileName)( ) 。
```
QDateTime QFSFileEngine.fileTime (self, QAbstractFileEngine.FileTime time)
```
[](qdatetime.html)
[从重新实现](qdatetime.html)[QAbstractFileEngine.fileTime](qabstractfileengine.html#fileTime)( ) 。
```
bool QFSFileEngine.flush (self)
```
从重新实现[QAbstractFileEngine.flush](qabstractfileengine.html#flush)( ) 。
```
int QFSFileEngine.handle (self)
```
从重新实现[QAbstractFileEngine.handle](qabstractfileengine.html#handle)( ) 。
```
QString QFSFileEngine.homePath ()
```
返回当前用户的主目录路径。
**See also** [rootPath](qfsfileengine.html#rootPath)( ) 。
```
bool QFSFileEngine.isRelativePath (self)
```
从重新实现[QAbstractFileEngine.isRelativePath](qabstractfileengine.html#isRelativePath)( ) 。
```
bool QFSFileEngine.isSequential (self)
```
从重新实现[QAbstractFileEngine.isSequential](qabstractfileengine.html#isSequential)( ) 。
```
bool QFSFileEngine.link (self, QString newName)
```
从重新实现[QAbstractFileEngine.link](qabstractfileengine.html#link)( ) 。
从创建该文件目前由指定的链接[fileName](qfsfileengine.html#fileName)()来_newName_。什么链接是依赖于底层的文件系统(无论是在Windows还是Unix上符号链接的快捷方式)上。成功返回True ,否则返回False 。
```
bool QFSFileEngine.mkdir (self, QString dirName, bool createParentDirectories)
```
从重新实现[QAbstractFileEngine.mkdir](qabstractfileengine.html#mkdir)( ) 。
```
bool QFSFileEngine.open (self, QIODevice.OpenMode openMode)
```
从重新实现[QAbstractFileEngine.open](qabstractfileengine.html#open)( ) 。
```
bool QFSFileEngine.open (self, QIODevice.OpenMode openMode, int fd, QFile.FileHandleFlags handleFlags)
```
打开文件句柄_fh_在_openMode_模式。成功时返回TRUE ,否则返回False 。
```
bool QFSFileEngine.open (self, QIODevice.OpenMode flags, int fd)
```
打开文件描述符_fd_在_openMode_模式。成功时返回TRUE ,否则返回False 。
```
QString QFSFileEngine.owner (self, QAbstractFileEngine.FileOwner)
```
从重新实现[QAbstractFileEngine.owner](qabstractfileengine.html#owner)( ) 。
```
int QFSFileEngine.ownerId (self, QAbstractFileEngine.FileOwner)
```
从重新实现[QAbstractFileEngine.ownerId](qabstractfileengine.html#ownerId)( ) 。
在Unix中,如果统计( )是成功的,`uid`如果返回_own_是所有者。否则,`gid`返回。如果统计( )不成功,-2是reuturned 。
对于Windows ,总是返回-2 。
```
int QFSFileEngine.pos (self)
```
从重新实现[QAbstractFileEngine.pos](qabstractfileengine.html#pos)( ) 。
```
str QFSFileEngine.read (self, int maxlen)
```
从重新实现[QAbstractFileEngine.read](qabstractfileengine.html#read)( ) 。
```
str QFSFileEngine.readLine (self, int maxlen)
```
从重新实现[QAbstractFileEngine.readLine](qabstractfileengine.html#readLine)( ) 。
```
bool QFSFileEngine.remove (self)
```
从重新实现[QAbstractFileEngine.remove](qabstractfileengine.html#remove)( ) 。
```
bool QFSFileEngine.rename (self, QString newName)
```
从重新实现[QAbstractFileEngine.rename](qabstractfileengine.html#rename)( ) 。
```
bool QFSFileEngine.rmdir (self, QString dirName, bool recurseParentDirectories)
```
从重新实现[QAbstractFileEngine.rmdir](qabstractfileengine.html#rmdir)( ) 。
```
QString QFSFileEngine.rootPath ()
```
返回根路径。
**See also** [homePath](qfsfileengine.html#homePath)( ) 。
```
bool QFSFileEngine.seek (self, int)
```
从重新实现[QAbstractFileEngine.seek](qabstractfileengine.html#seek)( ) 。
```
bool QFSFileEngine.setCurrentPath (QString path)
```
设置当前路径(例如,用于[QDir](qdir.html)) ,以_path_。返回True如果新的路径存在,否则这个函数不执行任何操作,并返回False 。
**See also** [currentPath](qfsfileengine.html#currentPath)( ) 。
```
QFSFileEngine.setFileName (self, QString file)
```
从重新实现[QAbstractFileEngine.setFileName](qabstractfileengine.html#setFileName)( ) 。
**See also** [fileName](qfsfileengine.html#fileName)( ) 。
```
bool QFSFileEngine.setPermissions (self, int perms)
```
从重新实现[QAbstractFileEngine.setPermissions](qabstractfileengine.html#setPermissions)( ) 。
```
bool QFSFileEngine.setSize (self, int size)
```
从重新实现[QAbstractFileEngine.setSize](qabstractfileengine.html#setSize)( ) 。
**See also** [size](qfsfileengine.html#size)( ) 。
```
int QFSFileEngine.size (self)
```
从重新实现[QAbstractFileEngine.size](qabstractfileengine.html#size)( ) 。
**See also** [setSize](qfsfileengine.html#setSize)( ) 。
```
QString QFSFileEngine.tempPath ()
```
返回临时路径(即在它是安全的存储临时文件的路径) 。
```
int QFSFileEngine.write (self, str data)
```
从重新实现[QAbstractFileEngine.write](qabstractfileengine.html#write)( ) 。
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- 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