# QFontDialog Class Reference
## [[QtGui](index.htm) module]
该QFontDialog类提供了一个对话框控件用于选择字体。[More...](#details)
继承[QDialog](qdialog.html)。
### Types
* `enum FontDialogOption { NoButtons, DontUseNativeDialog }`
* `class **[FontDialogOptions](index.htm)**`
### Methods
* `__init__ (self, QWidget parent = None)`
* `__init__ (self, QFont initial, QWidget parent = None)`
* `changeEvent (self, QEvent e)`
* `QFont currentFont (self)`
* `done (self, int result)`
* `open (self)`
* `open (self, QObject receiver, SLOT()SLOT() member)`
* `open (self, callable receiver)`
* `FontDialogOptions options (self)`
* `QFont selectedFont (self)`
* `setCurrentFont (self, QFont font)`
* `setOption (self, FontDialogOption option, bool on = True)`
* `setOptions (self, FontDialogOptions options)`
* `setVisible (self, bool visible)`
* `bool testOption (self, FontDialogOption option)`
### Static Methods
* `(QFont, bool ok) getFont (QFont initial, QWidget parent, QString title, FontDialogOptions options)`
* `(QFont, bool ok) getFont (QFont def, QWidget parent, QString caption)`
* `(QFont, bool ok) getFont (QFont initial, QWidget parent = None)`
* `(QFont, bool ok) getFont (QWidget parent = None)`
### Qt Signals
* `void currentFontChanged (const QFont&)`
* `void fontSelected (const QFont&)`
* * *
## Detailed Description
该QFontDialog类提供了一个对话框控件用于选择字体。
通过静态之一创建一个字体对话框[getFont](qfontdialog.html#getFont)（）函数。
示例：
```
bool ok;
[QFont](qfont.html) font = QFontDialog.getFont(
&ok, [QFont](qfont.html)("Helvetica [Cronyx]", 10), this);
if (ok) {
// the user clicked OK and font is set to the font the user selected
} else {
// the user canceled the dialog; font is set to the initial
// value, in this case Helvetica [Cronyx], 10
}
```
也可以用该对话框直接设置控件的字体：
```
myWidget.setFont(QFontDialog.getFont(0, myWidget.font()));
```
如果用户单击OK（确定） ，他们选择的字体将用于进myWidget ，如果他们单击取消原来的字体。
* * *
## Type Documentation
```
QFontDialog.FontDialogOption
```
此枚举指定影响的字体对话框的外观和感觉的各种选项。
| Constant | Value | Description |
| --- | --- | --- |
| `QFontDialog.NoButtons` | `0x00000001` | 不显示**OK**和**Cancel**按钮。 （有用的“现场对话” 。 ） |
| `QFontDialog.DontUseNativeDialog` | `0x00000002` | 使用Qt的Mac上的标准字体对话框，而不是苹果的本地字体面板。 （目前，本土对话框是从未使用过，但是这是有可能在未来的Qt版本中更改。 ） |
这个枚举被引入或修改的Qt 4.5 。
该FontDialogOptions类型是一个typedef为[QFlags](index.htm)\u003cFontDialogOption\u003e 。它存储FontDialogOption值的或组合。
**See also** [options](qfontdialog.html#options-prop)，[setOption](qfontdialog.html#setOption)（）和[testOption](qfontdialog.html#testOption)（ ） 。
* * *
## Method Documentation
```
QFontDialog.__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。
构造一个标准的字体对话框。
使用[setCurrentFont](qfontdialog.html#currentFont-prop)（）来设置初始字体属性。
该_parent_参数被传递给[QDialog](qdialog.html)构造函数。
此功能被引入Qt的4.5 。
**See also** [getFont](qfontdialog.html#getFont)（ ） 。
```
QFontDialog.__init__ (self, QFont initial, 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。
构造一个标准字体对话框，给定_parent_并指定_initial_字体。
此功能被引入Qt的4.5 。
```
QFontDialog.changeEvent (self, QEvent e)
```
从重新实现[QWidget.changeEvent](qwidget.html#changeEvent)（ ） 。
```
QFont QFontDialog.currentFont (self)
```
[
```
QFontDialog.done (self, int result)
```
](qfont.html)
[从重新实现](qfont.html)[QDialog.done](qdialog.html#done)（ ） 。
关闭对话框，并将其结果代码_result_。如果显示此对话框[exec_](qdialog.html#exec)（ ） ， （）完成将导致本地事件循环来完成，并[exec_](qdialog.html#exec)（ ）返回_result_。
**See also** [QDialog.done](qdialog.html#done)（ ） 。
```
(QFont, bool ok) QFontDialog.getFont (QFont initial, QWidget parent, QString title, FontDialogOptions options)
```
执行一个模式字体对话框并返回一个字体。
如果用户点击**OK**，则返回所选字体。如果用户点击**Cancel**时，_initial_字体返回。
该对话框与给定的构造_parent_并在指定的选项_options_。_title_显示为对话框的窗口标题和_initial_是最初选定的字体。如果_ok_参数不为空，它指的是该值设置为True，如果用户点击**OK**，并设置为False，如果用户点击**Cancel**。
示例：
```
bool ok;
[QFont](qfont.html) font = [QFontDialog](qfontdialog.html).getFont(&ok, [QFont](qfont.html)("Times", 12), this);
if (ok) {
// font is set to the font the user selected
} else {
// the user canceled the dialog; font is set to the initial
// value, in this case Times, 12.
}
```
也可以用该对话框直接设置控件的字体：
```
myWidget.setFont([QFontDialog](qfontdialog.html).getFont(0, myWidget.font()));
```
在这个例子中，如果用户单击OK（确定） ，他们选择的字体将被使用，如果他们单击取消原来的字体。
**Warning:**不要删除_parent_在该对话框的执行。如果你想这样做，你应该用一个自己创建的对话框[QFontDialog](qfontdialog.html)构造函数。
```
(QFont, bool ok) QFontDialog.getFont (QFont def, QWidget parent, QString caption)
```
调用的getFont （_ok_，_initial_，_parent_）代替。
**Warning:**不要删除_parent_在该对话框的执行。如果你想这样做，你应该用一个自己创建的对话框[QFontDialog](qfontdialog.html)构造函数。
该_name_参数被忽略。
此功能被引入Qt的4.5 。
```
(QFont, bool ok) QFontDialog.getFont (QFont initial, QWidget parent = None)
```
调用的getFont （_ok_，_parent_）代替。
**Warning:**不要删除_parent_在该对话框的执行。如果你想这样做，你应该用一个自己创建的对话框[QFontDialog](qfontdialog.html)构造函数。
该_name_参数被忽略。
```
(QFont, bool ok) QFontDialog.getFont (QWidget parent = None)
```
这是一个重载函数。
此功能被引入Qt的4.5 。
```
QFontDialog.open (self)
```
这是一个重载函数。
在打开的对话框并连接其[fontSelected](qfontdialog.html#fontSelected)（）信号到由指定的槽_receiver_和_member_。
该信号会从插槽中断开时，关闭对话框。
此功能被引入Qt的4.5 。
```
QFontDialog.open (self, QObject receiver, SLOT()SLOT() member)
```
```
QFontDialog.open (self, callable receiver)
```
```
FontDialogOptions QFontDialog.options (self)
```
[](index.htm)
```
QFont QFontDialog.selectedFont (self)
```
[
返回用户选择通过单击字体**OK**或等效按钮。
](qfont.html)
[**Note:**此字体并不总是一样的举行的字体](qfont.html)[currentFont](qfontdialog.html#currentFont-prop)因为用户属性终于可以选择一个使用之前选择不同的字体。
```
QFontDialog.setCurrentFont (self, QFont font)
```
```
QFontDialog.setOption (self, FontDialogOption option, bool on = True)
```
设置给定_option_被启用，如果_on_是真的，否则，清除给定的_option_。
**See also** [options](qfontdialog.html#options-prop)和[testOption](qfontdialog.html#testOption)（ ） 。
```
QFontDialog.setOptions (self, FontDialogOptions options)
```
```
QFontDialog.setVisible (self, bool visible)
```
从重新实现[QWidget.setVisible](qwidget.html#visible-prop)（ ） 。
```
bool QFontDialog.testOption (self, FontDialogOption option)
```
返回True如果给定的_option_被启用，否则返回False 。
**See also** [options](qfontdialog.html#options-prop)和[setOption](qfontdialog.html#setOption)（ ） 。
* * *
## Qt Signal Documentation
```
void currentFontChanged (const QFont&)
```
这是该信号的默认超载。
当当前字体改变这个信号被发射。新字体中指定_font_。
当用户在选择字体的信号被发射。最终，所选择的字体可能不同于当前选择的字体。
此功能被引入Qt的4.5 。
**See also** [currentFont](qfontdialog.html#currentFont-prop)，[fontSelected](qfontdialog.html#fontSelected)（）和[selectedFont](qfontdialog.html#selectedFont)（ ） 。
```
void fontSelected (const QFont&)
```
这是该信号的默认超载。
当字体已被选定，这个信号被发射。选择的字体在指定_font_。
当用户已经选择了最后的字体要使用的信号只发射。当用户改变当前字体的字体对话框它不发射。
此功能被引入Qt的4.5 。
**See also** [selectedFont](qfontdialog.html#selectedFont)（ ）[currentFontChanged](qfontdialog.html#currentFontChanged)（）和[currentFont](qfontdialog.html#currentFont-prop)。
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- 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