# QInputContext Class Reference
## [[QtGui](index.htm) module]
該QInputContext類抽象的輸入法相關的數據和作曲的狀態。[More...](#details)
繼承[QObject](qobject.html)。
### Types
* `enum StandardFormat { PreeditFormat, SelectionFormat }`
### Methods
* `__init__ (self, QObject?parent?=?None)`
* `list-of-QAction actions (self)`
* `bool filterEvent (self, QEvent?event)`
* `QWidget focusWidget (self)`
* `QFont font (self)`
* `QString identifierName (self)`
* `bool isComposing (self)`
* `QString language (self)`
* `mouseHandler (self, int?x, QMouseEvent?event)`
* `reset (self)`
* `sendEvent (self, QInputMethodEvent?event)`
* `setFocusWidget (self, QWidget?w)`
* `QTextFormat standardFormat (self, StandardFormat?s)`
* `update (self)`
* `widgetDestroyed (self, QWidget?w)`
* * *
## Detailed Description
該QInputContext類抽象的輸入法相關的數據和作曲的狀態。
輸入法是負責輸入無法通過簡單的鍵盤映射輸入復雜的文本。它可以轉換輸入事件(通常為關鍵事件)的序列轉換成通過輸入法的具體轉換過程的文本字符串。該類進程的廣泛,從簡單的有限狀態機的復雜文本翻譯器,水池與文本編輯功能的文本的一整段進行語法和語義分析。
抽象如此不同的輸入法,具體中間信息, Qt的提供QInputContext作為基類。這個概念是眾所周知的輸入法域“輸入上下文” 。一個輸入上下文的文本控件在響應需求創建的。它確保了一個輸入上下文制備用于輸入到文本構件之前的輸入方法。
屬于一個單一的輸入法多輸入上下文可以同時共存。假設多窗口的文本編輯器。窗口A和B的每個文本控件持有不同QInputContext實例,它包含不同的狀態信息,如部分組成的文本。
### Groups of Functions
| Context | Functions |
| --- | --- |
| Receiving information | [x11FilterEvent](qinputcontext.html#x11FilterEvent)(), [filterEvent](qinputcontext.html#filterEvent)(), [mouseHandler](qinputcontext.html#mouseHandler)() |
| Sending back composed text | [sendEvent](qinputcontext.html#sendEvent)() |
| State change notification | [setFocusWidget](qinputcontext.html#setFocusWidget)(), [reset](qinputcontext.html#reset)() |
| Context information | [identifierName](qinputcontext.html#identifierName)(), [language](qinputcontext.html#language)(), [font](qinputcontext.html#font)(), [isComposing](qinputcontext.html#isComposing)() |
### Licensing Information
版權所有(C )2003-2004 immodule Qt的項目。保留所有權利。
該文件是寫在自己的許可以促進諾基亞公司和/或其附屬公司( - IES ) 。你可以使用這個文件在你的Qt許可。下面的描述是從原來的文件頭復制。聯系immodule-qt@freedesktop.org如果是這種許可的條件不明確給你。
* * *
## Type Documentation
```
QInputContext.StandardFormat
```
| Constant | Value | Description |
| --- | --- | --- |
| `QInputContext.PreeditFormat` | `0` | 預編輯文本。 |
| `QInputContext.SelectionFormat` | `1` | 選擇文本。 |
**See also** [standardFormat](qinputcontext.html#standardFormat)( ) 。
* * *
## Method Documentation
```
QInputContext.__init__ (self, QObject?parent?=?None)
```
該_parent_的說法,如果不是沒有,原因_self_通過Qt的,而不是PyQt的擁有。
構造一個輸入上下文與給定_parent_。
```
list-of-QAction QInputContext.actions (self)
```
這是為Qt 4的初步接口。
```
bool QInputContext.filterEvent (self, QEvent?event)
```
此功能可以在子類中重新實現過濾輸入事件。
返回True,如果_event_已被消耗。否則,未過濾的_event_將被轉發到微件作為普通的方式。雖然輸入事件已接受()和忽略( )方法,讓它不變。
_event_目前僅限于這些類型的事件:
* CloseSoftwareInputPanel
* KeyPress
* KeyRelease
* MouseButtonDblClick
* MouseButtonPress
* MouseButtonRelease
* MouseMove
* RequestSoftwareInputPanel
但有些輸入法相關的事件,如[QWheelEvent](qwheelevent.html) or [QTabletEvent](qtabletevent.html)可能在將來增加。
濾波機會總是提供給輸入上下文盡快。它必須發生的任何其他關鍵事件消費者如eventfilters和加速器之前因為一些輸入法需要相當不同的按鍵組合和順序。它常與加速器等沖突,所以我們必須給輸入上下文濾波機會首先要保證所有的輸入法正常工作,而不管應用程序設計。
普通輸入法需要離散關鍵事件才能正常工作,所以Qt的鍵壓縮始終是任何輸入上下文停用。
**See also** [QKeyEvent](qkeyevent.html)和[x11FilterEvent](qinputcontext.html#x11FilterEvent)( ) 。
```
QWidget QInputContext.focusWidget (self)
```
[
返回具有輸入焦點此輸入上下文的部件。
返回值可能不同于holderWidget ( )如果輸入上下文幾個文本組件之間共享。
**Warning:**為了保證平臺的獨立性,并支持小部件的靈活配置,普通的輸入方法不應該直接調用此函數。
](qwidget.html)
[**See also**](qwidget.html) [setFocusWidget](qinputcontext.html#setFocusWidget)( ) 。
```
QFont QInputContext.font (self)
```
[
返回當前輸入小部件的字體
```
QString QInputContext.identifierName (self)
```
這種方法是抽象的,應在任何子類中重新實現。
該功能必須在任何子類中實現,返回輸入法的識別名稱。
](qfont.html)
[返回值是確定并指定輸入法的輸入法切換機制等名稱。該名稱必須一致](qfont.html)[QInputContextPlugin.keys](index.htm#keys)( ) 。該名稱必須只包含ASCII字符。
有兩個不同的名字,在該輸入法域不同的責任。這個函數返回其中之一。另一名被稱為是代表名稱為終端用戶出現在菜單等等“顯示名稱” 。
**See also** [QInputContextPlugin.keys](index.htm#keys)()和[QInputContextPlugin.displayName](index.htm#displayName)( ) 。
```
bool QInputContext.isComposing (self)
```
這種方法是抽象的,應在任何子類中重新實現。
該函數表示InputMethodStart事件是否已被發送到當前焦點控件。它是確保輸入上下文可以發送InputMethodCompose或InputMethodEnd安全事件,如果這個函數返回True 。
該狀態會自動被通過跟蹤[sendEvent](qinputcontext.html#sendEvent)( ) 。
**See also** [sendEvent](qinputcontext.html#sendEvent)( ) 。
```
QString QInputContext.language (self)
```
這種方法是抽象的,應在任何子類中重新實現。
該功能必須在任何子類中實現,返回的輸入上下文的語言代碼(如“ zh_CN的” , “ ZH_TW ” , “了zh_HK ” , “ JA ” , “KO” , ... ) 。如果輸入的情況下能處理多種語言,返回當前使用的之一。該名稱必須與QInputContextPlugin.language ( )是一致的。
這些信息將被用于語言標記功能[QInputMethodEvent](qinputmethodevent.html)。這是需要正確區分統一漢字。它使正確的字體和字符代碼處理。假設CJK- awared多種語言的網頁瀏覽器(自動修改字體中日韓混合文本)和XML編輯器(即自動插入郎ATTR ) 。
```
QInputContext.mouseHandler (self, int?x, QMouseEvent?event)
```
此功能可重新實現在子類中處理鼠標按下,釋放,雙擊,然后將預編輯文本中的事件。您可以使用該功能來實現鼠標為導向的用戶界面,例如文本或選擇彈出菜單中選擇候選人。
該_x_參數是所發送的InputMethodCompose事件串中的偏移量。的改變邊界_x_確保為預編輯字符串的字符邊界準確。
該_event_參數是被送到編輯器插件的事件。事件類型是[QEvent.MouseButtonPress](qevent.html#Type-enum),[QEvent.MouseButtonRelease](qevent.html#Type-enum),[QEvent.MouseButtonDblClick](qevent.html#Type-enum) or [QEvent.MouseMove](qevent.html#Type-enum)。本次活動的按鈕和狀態顯示已執行的一種操作。
```
QInputContext.reset (self)
```
這種方法是抽象的,應在任何子類中重新實現。
此功能可重新實現在子類中重新設置輸入法的狀態。
此功能稱為由幾個部件復位輸入狀態。例如,一個文本組件插入文字,使小工具準備好接受一個文本之前調用這個函數。
默認的實現是足夠簡單的輸入法。你可以重載這個函數來在復雜的輸入法復位外部的輸入法引擎。在該情況下,調用QInputContext.reset ( ),以確保正確的端接輸入的。
在復位( )的重新實現,您不能發送任何[QInputMethodEvent](qinputmethodevent.html)含預編輯文本。您只能提交字符串和屬性,否則,你的風險斷裂輸入狀態的一致性。
```
QInputContext.sendEvent (self, QInputMethodEvent?event)
```
通過發送指定的輸入法事件_event_以目前的重點部件。的實現[QInputContext](qinputcontext.html)應該調用此方法來發送生成的輸入法事件,而不是[QApplication.sendEvent](qcoreapplication.html#sendEvent)( ) ,因為事件可能要被分派到一些平臺上的不同應用程序。
一些復雜的輸入法路線的處理到幾個子上下文(例如,使語言切換) 。考慮到這一點,[QInputContext](qinputcontext.html)將檢查如果父對象是[QInputContext](qinputcontext.html)。如果是的話,它會調用父母的SendEvent ( )實現,而不是直接發送該事件。
**See also** [QInputMethodEvent](qinputmethodevent.html)。
```
QInputContext.setFocusWidget (self, QWidget?w)
```
設置_widget_具有輸入焦點此輸入上下文。
**Warning:**普通的輸入法不能直接調用此函數。
**See also** [focusWidget](qinputcontext.html#focusWidget)( ) 。
```
QTextFormat QInputContext.standardFormat (self, StandardFormat?s)
```
[](qtextformat.html)
[返回](qtextformat.html)[QTextFormat](qtextformat.html)對象,指定組件的格式_s_。
```
QInputContext.update (self)
```
這個虛函數被調用時,在焦點部件的狀態發生了變化。[QInputContext](qinputcontext.html)然后可以使用[QWidget.inputMethodQuery](qwidget.html#inputMethodQuery)( )來查詢widget的新狀態。
```
QInputContext.widgetDestroyed (self, QWidget?w)
```
指定當該虛擬函數調用_widget_被破壞。該_widget_是安裝在此輸入上下文上的一個小部件。
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- 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文檔翻譯:Qt樣式單參考,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
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- QTouchEvent Class Reference
- Reference
- QTransform Class Reference
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- QTreeView Class Reference
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- QUdpSocket Class Reference
- QUndoCommand Class Reference
- QUndoGroup Class Reference
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- QUrl Class Reference
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- QUuid Class Reference
- QValidator Class Reference
- QVariant Class Reference
- QVariantAnimation Class Reference
- QVBoxLayout Class Reference
- QVector2D Class Reference
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- QVector4D Class Reference
- QVideoFrame Class Reference
- QVideoSurfaceFormat Class Reference
- QWaitCondition Class Reference
- QWebDatabase Class Reference
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- QWebHistory Class Reference
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- QWebHitTestResult Class Reference
- QWebInspector Class Reference
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- QWebSecurityOrigin Class Reference
- QWebSettings Class Reference
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- QWhatsThis Class Reference
- QWhatsThisClickedEvent Class Reference
- QWheelEvent Class Reference
- QWidget Class Reference
- QWidgetAction Class Reference
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- QWindowStateChangeEvent Class Reference
- QWizard Class Reference
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- QWorkspace Class Reference
- QWriteLocker Class Reference
- QX11EmbedContainer Class Reference
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- QX11Info Class Reference
- QXmlAttributes Class Reference
- QXmlContentHandler Class Reference
- QXmlDeclHandler Class Reference
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- QXmlDTDHandler Class Reference
- QXmlEntityResolver Class Reference
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- QXmlFormatter Class Reference
- QXmlInputSource Class Reference
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- 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
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- 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