# QToolButton Class Reference
## [[QtGui](index.htm) module]
该QToolButton类提供了一个快速访问按钮，命令或选项，通常用于内部[QToolBar](qtoolbar.html)。[More...](#details)
继承[QAbstractButton](qabstractbutton.html)。
### Types
* `enum ToolButtonPopupMode { DelayedPopup, MenuButtonPopup, InstantPopup }`
### Methods
* `__init__ (self, QWidget parent = None)`
* `actionEvent (self, QActionEvent)`
* `Qt.ArrowType arrowType (self)`
* `bool autoRaise (self)`
* `changeEvent (self, QEvent)`
* `QAction defaultAction (self)`
* `enterEvent (self, QEvent)`
* `bool event (self, QEvent e)`
* `bool hitButton (self, QPoint pos)`
* `initStyleOption (self, QStyleOptionToolButton option)`
* `leaveEvent (self, QEvent)`
* `QMenu menu (self)`
* `QSize minimumSizeHint (self)`
* `mousePressEvent (self, QMouseEvent)`
* `mouseReleaseEvent (self, QMouseEvent)`
* `nextCheckState (self)`
* `paintEvent (self, QPaintEvent)`
* `ToolButtonPopupMode popupMode (self)`
* `setArrowType (self, Qt.ArrowType type)`
* `setAutoRaise (self, bool enable)`
* `setDefaultAction (self, QAction)`
* `setMenu (self, QMenu menu)`
* `setPopupMode (self, ToolButtonPopupMode mode)`
* `setToolButtonStyle (self, Qt.ToolButtonStyle style)`
* `showMenu (self)`
* `QSize sizeHint (self)`
* `timerEvent (self, QTimerEvent)`
* `Qt.ToolButtonStyle toolButtonStyle (self)`
### Qt Signals
* `void triggered (QAction *)`
* * *
## Detailed Description
该QToolButton类提供了一个快速访问按钮，命令或选项，通常用于内部[QToolBar](qtoolbar.html)。
工具按钮是一个特殊的按钮，它提供快速访问特定的命令或选项。相对于正常的命令按钮，工具按钮通常不显示文本标籤，但显示的图标来代替。
工具按钮通常是创建新的时[QAction](qaction.html)实例与创建[QToolBar.addAction](qtoolbar.html#addAction)（ ）或现有的行动被添加到工具栏[QToolBar.addAction](qtoolbar.html#addAction)（ ） 。它也可以构建以同样的方式与任何其他部件的工具按钮，并安排他们一起在布局其他部件。
其中一个经典的用的工具按钮来选择工具，例如， “笔”在一个绘图程序的工具。这将通过使用QToolButton作为切换按钮（参见实施[setToggleButton](index.htm#setToggleButton)（））。
QToolButton支持自动提高。在自动模式下加注，按钮绘制一个3D框架，只有当鼠标指向它。当使用内部的一个按钮，该功能会自动开启[QToolBar](qtoolbar.html)。与更改[setAutoRaise](qtoolbutton.html#autoRaise-prop)（ ） 。
工具按钮的图标被设置为[QIcon](qicon.html)。这使得它可以指定不同的像素映射为残疾人和活跃的状态。残疾人像素图时使用的按钮的功能不可用。当自动提出的按钮，因为将鼠标指针悬停在它显示了积极的像素图。
按钮的外观和尺寸与可调[setToolButtonStyle](qtoolbutton.html#toolButtonStyle-prop)（）和[setIconSize](qabstractbutton.html#iconSize-prop)（ ） 。当内部使用[QToolBar](qtoolbar.html)在[QMainWindow](qmainwindow.html)，该按钮会自动调整以[QMainWindow](qmainwindow.html)的设置（见[QMainWindow.setToolButtonStyle](qmainwindow.html#toolButtonStyle-prop)（）和[QMainWindow.setIconSize](qmainwindow.html#iconSize-prop)（））。取而代之的图标，工具按钮也可以显示一个箭头符号，与指定的[arrowType](qtoolbutton.html#arrowType-prop)。
一个工具按钮，可以在弹出菜单中提供了更多的选择。弹出菜单可以使用设置[setMenu](qtoolbutton.html#setMenu)（ ） 。使用[setPopupMode](qtoolbutton.html#popupMode-prop)（ ）来配置可与菜单设置工具按钮的不同模式。默认模式是DelayedPopupMode它有时被用来与“后退”按钮，在Web浏览器。按下并按住该按钮，一段时间后，弹出一个菜单显示跳转到可能的页面列表。默认延迟为600毫秒，你可以用它调整[setPopupDelay](index.htm#setPopupDelay)（ ） 。
|  |
| Qt Assistant's toolbar contains tool buttons that are associated with actions used in other parts of the main window. |
* * *
## Type Documentation
```
QToolButton.ToolButtonPopupMode
```
描述了一个菜单应弹出的工具按钮，有一个菜单设置，或者包含一个动作列表。
| Constant | Value | Description |
| --- | --- | --- |
| `QToolButton.DelayedPopup` | `0` | 按住工具按钮一定时间后（超时是款式依赖，见[QStyle.SH_ToolButton_PopupDelay](qstyle.html#StyleHint-enum)） ，则显示菜单。一个典型的应用实例是在某些Web浏览器的工具栏的“后退”按钮。如果用户点击它时，浏览器只是浏览回到上一个页面。如果用户按下并保持按钮一会儿，工具按钮显示包含当前历史列表菜单 |
| `QToolButton.MenuButtonPopup` | `1` | 在这种模式下，工具按钮显示一个特殊的箭头来指示菜单是否存在。当该按钮的箭头部分被按下时显示的菜单。 |
| `QToolButton.InstantPopup` | `2` | 显示菜单时，无延时，按下工具按钮时。在这种模式下，该按钮自身的动作不会被触发。 |
* * *
## Method Documentation
```
QToolButton.__init__ (self, QWidget 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。
构造一个空工具按钮与父_parent_。
```
QToolButton.actionEvent (self, QActionEvent)
```
从重新实现[QWidget.actionEvent](qwidget.html#actionEvent)（ ） 。
```
Qt.ArrowType QToolButton.arrowType (self)
```
[
```
bool QToolButton.autoRaise (self)
```
```
QToolButton.changeEvent (self, QEvent)
```
](qt.html#ArrowType-enum)
[从重新实现](qt.html#ArrowType-enum)[QWidget.changeEvent](qwidget.html#changeEvent)（ ） 。
```
QAction QToolButton.defaultAction (self)
```
[
返回默认操作。
](qaction.html)
[**See also**](qaction.html) [setDefaultAction](qtoolbutton.html#setDefaultAction)（ ） 。
```
QToolButton.enterEvent (self, QEvent)
```
从重新实现[QWidget.enterEvent](qwidget.html#enterEvent)（ ） 。
```
bool QToolButton.event (self, QEvent e)
```
从重新实现[QObject.event](qobject.html#event)（ ） 。
```
bool QToolButton.hitButton (self, QPoint pos)
```
从重新实现[QAbstractButton.hitButton](qabstractbutton.html#hitButton)（ ） 。
```
QToolButton.initStyleOption (self, QStyleOptionToolButton option)
```
初始化_option_与其它的值[QToolButton](qtoolbutton.html)。当他们需要一个这种方法是有用的子类[QStyleOptionToolButton](qstyleoptiontoolbutton.html)，但不希望在所有的信息填写自己。
**See also** [QStyleOption.initFrom](qstyleoption.html#initFrom)（ ） 。
```
QToolButton.leaveEvent (self, QEvent)
```
从重新实现[QWidget.leaveEvent](qwidget.html#leaveEvent)（ ） 。
```
QMenu QToolButton.menu (self)
```
[
返回，如果没有菜单已经被定义的相关联的菜单，或0 。
](qmenu.html)
[**See also**](qmenu.html) [setMenu](qtoolbutton.html#setMenu)（ ） 。
```
QSize QToolButton.minimumSizeHint (self)
```
[](qsize.html)
[从重新实现](qsize.html)[QWidget.minimumSizeHint](qwidget.html#minimumSizeHint-prop)（ ） 。
```
QToolButton.mousePressEvent (self, QMouseEvent)
```
从重新实现[QWidget.mousePressEvent](qwidget.html#mousePressEvent)（ ） 。
```
QToolButton.mouseReleaseEvent (self, QMouseEvent)
```
从重新实现[QWidget.mouseReleaseEvent](qwidget.html#mouseReleaseEvent)（ ） 。
```
QToolButton.nextCheckState (self)
```
从重新实现[QAbstractButton.nextCheckState](qabstractbutton.html#nextCheckState)（ ） 。
```
QToolButton.paintEvent (self, QPaintEvent)
```
从重新实现[QWidget.paintEvent](qwidget.html#paintEvent)（ ） 。
描绘按钮响应于所述涂料_event_。
```
ToolButtonPopupMode QToolButton.popupMode (self)
```
[
```
QToolButton.setArrowType (self, Qt.ArrowType type)
```
```
QToolButton.setAutoRaise (self, bool enable)
```
```
QToolButton.setDefaultAction (self, QAction)
```
这种方法也是一个Qt槽与C + +的签名`void setDefaultAction(QAction *)`。
设置默认动作_action_。
如果一个工具按钮有一个默认的动作时，动作定义如文本，图标，工具提示等按钮的属性
](qtoolbutton.html#ToolButtonPopupMode-enum)
[**See also**](qtoolbutton.html#ToolButtonPopupMode-enum) [defaultAction](qtoolbutton.html#defaultAction)（ ） 。
```
QToolButton.setMenu (self, QMenu menu)
```
联系人给定_menu_使用此工具按钮。
菜单将根据该按钮的显示[popupMode](qtoolbutton.html#popupMode-prop)。
菜单的所有权不转移到工具按钮。
**See also** [menu](qtoolbutton.html#menu)（ ） 。
```
QToolButton.setPopupMode (self, ToolButtonPopupMode mode)
```
```
QToolButton.setToolButtonStyle (self, Qt.ToolButtonStyle style)
```
这种方法也是一个Qt槽与C + +的签名`void setToolButtonStyle(Qt::ToolButtonStyle)`。
```
QToolButton.showMenu (self)
```
这种方法也是一个Qt槽与C + +的签名`void showMenu()`。
显示（弹出）相关的弹出式菜单。如果没有这样的菜单，这个函数什么都不做。此函数不返回，直到弹出菜单已经被用户关闭。
```
QSize QToolButton.sizeHint (self)
```
[](qsize.html)
[从重新实现](qsize.html)[QWidget.sizeHint](qwidget.html#sizeHint-prop)（ ） 。
```
QToolButton.timerEvent (self, QTimerEvent)
```
从重新实现[QObject.timerEvent](qobject.html#timerEvent)（ ） 。
```
Qt.ToolButtonStyle QToolButton.toolButtonStyle (self)
```
[
* * *
## Qt Signal Documentation
```
void triggered (QAction *)
```
这是该信号的默认超载。
这个信号被发射给定的时_action_被触发。
该操作也可与用户界面的其他部分，如菜单项和快捷键相关联。以这种方式共享行动有助于使用户界面更一致，更是往往不那么执行工作。
](qt.html#ToolButtonStyle-enum)
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- 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