# QProxyModel Class Reference
## [[QtGui](index.htm) module]
该QProxyModel类提供了另一个模型和视图之间传递的数据处理支持。[More...](#details)
继承[QAbstractItemModel](qabstractitemmodel.html)。
### Methods
* `__init__ (self, QObject parent = None)`
* `int columnCount (self, QModelIndex parent = QModelIndex())`
* `QVariant data (self, QModelIndex index, int role = Qt.DisplayRole)`
* `bool dropMimeData (self, QMimeData data, Qt.DropAction action, int row, int column, QModelIndex parent)`
* `fetchMore (self, QModelIndex parent)`
* `Qt.ItemFlags flags (self, QModelIndex index)`
* `bool hasChildren (self, QModelIndex parent = QModelIndex())`
* `QVariant headerData (self, int section, Qt.Orientation orientation, int role = Qt.DisplayRole)`
* `QModelIndex index (self, int row, int column, QModelIndex parent = QModelIndex())`
* `bool insertColumns (self, int column, int count, QModelIndex parent = QModelIndex())`
* `bool insertRows (self, int row, int count, QModelIndex parent = QModelIndex())`
* `list-of-QModelIndex match (self, QModelIndex start, int role, QVariant value, int hits = 1, Qt.MatchFlags flags = Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap))`
* `QMimeData mimeData (self, list-of-QModelIndex indexes)`
* `QStringList mimeTypes (self)`
* `QAbstractItemModel model (self)`
* `QModelIndex parent (self, QModelIndex child)`
* `QObject parent (self)`
* `revert (self)`
* `int rowCount (self, QModelIndex parent = QModelIndex())`
* `bool setData (self, QModelIndex index, QVariant value, int role = Qt.EditRole)`
* `bool setHeaderData (self, int section, Qt.Orientation orientation, QVariant value, int role = Qt.EditRole)`
* `setModel (self, QAbstractItemModel model)`
* `sort (self, int column, Qt.SortOrder order = Qt.AscendingOrder)`
* `QSize span (self, QModelIndex index)`
* `bool submit (self)`
* `Qt.DropActions supportedDropActions (self)`
* * *
## Detailed Description
该QProxyModel类提供了另一个模型和视图之间传递的数据处理支持。
如果你想要做筛选和排序，请参阅[QSortFilterProxyModel](qsortfilterproxymodel.html)。
代理模型提供了可用于操纵通过一个基本的模型中检索到的数据的标准模型接口。它们可以被用来执行操作，例如排序，并在不改变模型的内容而获得的数据滤波。
正如的子类[QAbstractItemView](qabstractitemview.html)， QProxyModel提供[setModel](qproxymodel.html#setModel)（）函数，用于指定要由代理将作用于模型。视图可以连接到任何底层模型或所述代理模型与[QAbstractItemView.setModel](qabstractitemview.html#setModel)（ ） 。
由于意见依赖所提供的模型索引来标识数据项的模型，并在一些可视化表示定位这些物品的信息，代理模式必须建立，而不是从它们的底层模型提供模型索引自己的模型索引。
* * *
## Method Documentation
```
QProxyModel.__init__ (self, QObject parent = None)
```
该_parent_的说法，如果不是没有，原因_self_通过Qt的，而不是PyQt的拥有。
构造一个代理模型与给定_parent_。
```
int QProxyModel.columnCount (self, QModelIndex parent = QModelIndex())
```
从重新实现[QAbstractItemModel.columnCount](qabstractitemmodel.html#columnCount)（ ） 。
返回列的数目为给定的_parent_。
**See also** [QAbstractItemModel.columnCount](qabstractitemmodel.html#columnCount)（ ） 。
```
QVariant QProxyModel.data (self, QModelIndex index, int role = Qt.DisplayRole)
```
从重新实现[QAbstractItemModel.data](qabstractitemmodel.html#data)（ ） 。
返回存储在该项目中的数据与给定_index_指定下_role_。
**See also** [setData](qproxymodel.html#setData)（ ） 。
```
bool QProxyModel.dropMimeData (self, QMimeData data, Qt.DropAction action, int row, int column, QModelIndex parent)
```
从重新实现[QAbstractItemModel.dropMimeData](qabstractitemmodel.html#dropMimeData)（ ） 。
如果模型接受返回True_data_滴到用于指定附加的视图_action_否则返回False 。
该_parent_，_row_和_column_细节可以被用于控制当通过拖放系统接收的MIME类型是可以接受的一个模型的不同部分。
```
QProxyModel.fetchMore (self, QModelIndex parent)
```
从重新实现[QAbstractItemModel.fetchMore](qabstractitemmodel.html#fetchMore)（ ） 。
获取给定的多个子项_parent_。此功能用于通过视图来告诉他们可以显示比模型提供了更多的数据模型。
**See also** [QAbstractItemModel.fetchMore](qabstractitemmodel.html#fetchMore)（ ） 。
```
Qt.ItemFlags QProxyModel.flags (self, QModelIndex index)
```
[](index.htm)
[从重新实现](index.htm)[QAbstractItemModel.flags](qabstractitemmodel.html#flags)（ ） 。
返回项标志为给定的_index_。
```
bool QProxyModel.hasChildren (self, QModelIndex parent = QModelIndex())
```
从重新实现[QAbstractItemModel.hasChildren](qabstractitemmodel.html#hasChildren)（ ） 。
返回True ，如果该项目对应的_parent_指数有子项，否则返回False 。
**See also** [QAbstractItemModel.hasChildren](qabstractitemmodel.html#hasChildren)（ ） 。
```
QVariant QProxyModel.headerData (self, int section, Qt.Orientation orientation, int role = Qt.DisplayRole)
```
从重新实现[QAbstractItemModel.headerData](qabstractitemmodel.html#headerData)（ ） 。
返回存储在数据_section_与所指定的报头的_orientation_根据给定的_role_。
**See also** [setHeaderData](qproxymodel.html#setHeaderData)（ ） 。
```
QModelIndex QProxyModel.index (self, int row, int column, QModelIndex parent = QModelIndex())
```
[](qmodelindex.html)
[从重新实现](qmodelindex.html)[QAbstractItemModel.index](qabstractitemmodel.html#index)（ ） 。
返回模型指数与给定_row_，_column_和_parent_。
**See also** [QAbstractItemModel.index](qabstractitemmodel.html#index)（ ） 。
```
bool QProxyModel.insertColumns (self, int column, int count, QModelIndex parent = QModelIndex())
```
从重新实现[QAbstractItemModel.insertColumns](qabstractitemmodel.html#insertColumns)（ ） 。
Inserts _count_列到模型中，创建新项目，给定的儿童_parent_。新列前插入_column_规定。如果_parent_项目有没有孩子，单行创建包含列的所需数量。
返回True如果成功插入的列，否则返回False 。
**See also** [QAbstractItemModel.insertColumns](qabstractitemmodel.html#insertColumns)（ ） 。
```
bool QProxyModel.insertRows (self, int row, int count, QModelIndex parent = QModelIndex())
```
从重新实现[QAbstractItemModel.insertRows](qabstractitemmodel.html#insertRows)（ ） 。
Inserts _count_行到模型中，创建新项目，给定的儿童_parent_。新行前插入_row_规定。如果_parent_项目有没有孩子，一列是创建包含的行规定的数量。
返回True如果成功插入的行，否则返回False 。
**See also** [QAbstractItemModel.insertRows](qabstractitemmodel.html#insertRows)（ ） 。
```
list-of-QModelIndex QProxyModel.match (self, QModelIndex start, int role, QVariant value, int hits = 1, Qt.MatchFlags flags = Qt.MatchFlags(Qt.MatchStartsWith|Qt.MatchWrap))
```
从重新实现[QAbstractItemModel.match](qabstractitemmodel.html#match)（ ） 。
返回每一个包含给定模型索引的列表_value_为_role_规定。搜索开始于_start_指数，并根据指定的执行_flags_。搜索继续进行，直到匹配的数据项的数目等于_hits_，最后一行为止，或者搜索到达_start_再次，这取决于是否`MatchWrap`在被指定_flags_。
**See also** [QAbstractItemModel.match](qabstractitemmodel.html#match)（ ） 。
```
QMimeData QProxyModel.mimeData (self, list-of-QModelIndex indexes)
```
[
该_QMimeData_结果
](qmimedata.html)
[从重新实现](qmimedata.html)[QAbstractItemModel.mimeData](qabstractitemmodel.html#mimeData)（ ） 。
返回MIME数据为指定的_indexes_在模型中。
```
QStringList QProxyModel.mimeTypes (self)
```
从重新实现[QAbstractItemModel.mimeTypes](qabstractitemmodel.html#mimeTypes)（ ） 。
返回由该模型支持的MIME类型的列表。
```
QAbstractItemModel QProxyModel.model (self)
```
[
返回包含可通过代理服务器模型的数据模型。
](qabstractitemmodel.html)
[**See also**](qabstractitemmodel.html) [setModel](qproxymodel.html#setModel)（ ） 。
```
QModelIndex QProxyModel.parent (self, QModelIndex child)
```
[](qmodelindex.html)
[从重新实现](qmodelindex.html)[QAbstractItemModel.parent](qabstractitemmodel.html#parent)（ ） 。
返回对应于给定的父模型索引_child_索引。
```
QObject QProxyModel.parent (self)
```
[
```
QProxyModel.revert (self)
```
](qobject.html)
[从重新实现](qobject.html)[QAbstractItemModel.revert](qabstractitemmodel.html#revert)（ ） 。
```
int QProxyModel.rowCount (self, QModelIndex parent = QModelIndex())
```
从重新实现[QAbstractItemModel.rowCount](qabstractitemmodel.html#rowCount)（ ） 。
返回的行数为给定的_parent_。
**See also** [QAbstractItemModel.rowCount](qabstractitemmodel.html#rowCount)（ ） 。
```
bool QProxyModel.setData (self, QModelIndex index, QVariant value, int role = Qt.EditRole)
```
从重新实现[QAbstractItemModel.setData](qabstractitemmodel.html#setData)（ ） 。
设置_role_对于在项目数据_index_至_value_。成功返回True ，否则返回False 。
基类实现返回False 。此功能与[data](qproxymodel.html#data)（ ）必须被重新实现可编辑的模型。
**See also** [data](qproxymodel.html#data)（ ）[itemData](qabstractitemmodel.html#itemData)（）和[QAbstractItemModel.setData](qabstractitemmodel.html#setData)（ ） 。
```
bool QProxyModel.setHeaderData (self, int section, Qt.Orientation orientation, QVariant value, int role = Qt.EditRole)
```
从重新实现[QAbstractItemModel.setHeaderData](qabstractitemmodel.html#setHeaderData)（ ） 。
设置_role_在数据_section_用指定的标头_orientation_到_value_给出。
**See also** [headerData](qproxymodel.html#headerData)（）和[QAbstractItemModel.setHeaderData](qabstractitemmodel.html#setHeaderData)（ ） 。
```
QProxyModel.setModel (self, QAbstractItemModel model)
```
设置给定_model_到由所述代理模型进行处理。
**See also** [model](qproxymodel.html#model)（ ） 。
```
QProxyModel.sort (self, int column, Qt.SortOrder order = Qt.AscendingOrder)
```
从重新实现[QAbstractItemModel.sort](qabstractitemmodel.html#sort)（ ） 。
排序在指定的子项_column_根据所定义的排序顺序_order_。
**See also** [QAbstractItemModel.sort](qabstractitemmodel.html#sort)（ ） 。
```
QSize QProxyModel.span (self, QModelIndex index)
```
[](qsize.html)
[从重新实现](qsize.html)[QAbstractItemModel.span](qabstractitemmodel.html#span)（ ） 。
返回对应于所指定的项的大小_index_。
```
bool QProxyModel.submit (self)
```
从重新实现[QAbstractItemModel.submit](qabstractitemmodel.html#submit)（ ） 。
```
Qt.DropActions QProxyModel.supportedDropActions (self)
```
[](index.htm)
[从重新实现](index.htm)[QAbstractItemModel.supportedDropActions](qabstractitemmodel.html#supportedDropActions)（ ） 。
返回由该模型所支持的放置动作，这是中定义的个人行动相结合[Qt.DropActions](qt.html#DropAction-enum)。
由模型提供的放置动作的选择将影响该开始拖放操作的组件的行为。
**See also** [Drag and Drop](index.htm)。
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- 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