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- QAccel类
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- qdatabrowser.h Include File
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- QDataStream类
- qdatastream.h包含文件
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- qdial.h Include File
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- QDialog类
- qdialog.h包含文件
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- qdirectpainter_qws.h Include File
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- qdir.h包含文件
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- qdockarea.h包含文件
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- qdockwindow.h包含文件
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- QDomAttr Class
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- qdom.h Include File
- QDomImplementation Class
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- QDomNamedNodeMap Class
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- QDomNode Class
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- QDomNotation Class
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- QDomText Class
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- QDoubleValidator类
- QDoubleValidator成员列表
- QDragEnterEvent Class
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- QDragMoveEvent Class
- QDragMoveEvent Member List
- QDragObject Class
- qdragobject.h Include File
- QDragObject Member List
- qdrawutil.h Include File
- QDropEvent Class
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- QDropSite Class
- qdropsite.h Include File
- QEditorFactory Class
- qeditorfactory.h Include File
- QEditorFactory Member List
- QEmbed - File and Image Embedder
- QErrorMessage类
- qerrormessage.h包含文件
- QErrorMessage成员列表
- QEucJpCodec Class
- qeucjpcodec.h Include File
- QEucJpCodec Member List
- QEucKrCodec Class
- qeuckrcodec.h Include File
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- QEvent类
- qevent.h包含文件
- QEvent成员列表
- Font Displayer
- QFile类
- QFileDialog类
- qfiledialog.h包含文件
- QFileDialog成员列表
- qfile.h包含文件
- QFileIconProvider Class
- QFileIconProvider Member List
- QFileInfo Class
- qfileinfo.h Include File
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- QFile成员列表
- QFilePreview Class
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- QFocusData Class
- qfocusdata.h Include File
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- QFocusEvent Class
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- QFont Class
- QFontDatabase Class
- qfontdatabase.h Include File
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- QFontDialog类
- qfontdialog.h包含文件
- QFontDialog成员列表
- QFont Examples
- qfont.h Include File
- QFontInfo Class
- qfontinfo.h Include File
- QFontInfo Member List
- QFontManager Class
- qfontmanager_qws.h Include File
- QFontManager Member List
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- QFontMetrics Class
- qfontmetrics.h Include File
- QFontMetrics Member List
- QFrame类
- qframe.h包含文件
- QFrame成员列表
- QFtp类
- qftp.h包含文件
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- QGb18030Codec Class
- qgb18030codec.h Include File
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- QGbkCodec Class
- QGbkCodec Member List
- qgfx_qws.h Include File
- QGL Class
- QGLayoutIterator Class
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- QGLColormap Class
- qglcolormap.h Include File
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- QGLContext Class
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- QGLFormat Class
- QGLFormat Member List
- qgl.h Include File
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- qglobal.h Include File
- QGLWidget Class
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- QGrid类
- qgrid.h包含文件
- QGridLayout Class
- QGridLayout Member List
- QGrid成员列表
- QGridView Class
- qgridview.h Include File
- QGridView Member List
- QGroupBox类
- qgroupbox.h包含文件
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- QGuardedPtr类
- qguardedptr.h包含文件
- QGuardedPtr成员列表
- QHBox Class
- qhbox.h Include File
- QHBoxLayout Class
- QHBoxLayout Member List
- QHBox Member List
- QHButtonGroup类
- qhbuttongroup.h包含文件
- QHButtonGroup成员列表
- QHeader类
- qheader.h包含文件
- QHeader成员列表
- QHebrewCodec Class
- QHebrewCodec Member List
- QHGroupBox类
- qhgroupbox.h包含文件
- QHGroupBox成员列表
- QHideEvent Class
- QHideEvent Member List
- QHostAddress Class
- qhostaddress.h Include File
- QHostAddress Member List
- QHttp Class
- qhttp.h Include File
- QHttp Member List
- QIconDrag Class
- QIconDragItem Class
- QIconDragItem Member List
- QIconDrag Member List
- QIconSet Class
- qiconset.h Include File
- QIconSet Member List
- QIconView Class
- qiconview.h Include File
- QIconViewItem Class
- QIconViewItem Member List
- QIconView Member List
- QImage Class
- QImageConsumer Class
- QImageConsumer Member List
- QImageDecoder Class
- QImageDecoder Member List
- QImageDrag Class
- QImageDrag Member List
- QImageFormat Class
- QImageFormat Member List
- QImageFormatPlugin Class
- qimageformatplugin.h Include File
- QImageFormatPlugin Member List
- QImageFormatType Class
- QImageFormatType Member List
- qimage.h Include File
- QImageIO Class
- QImageIO Member List
- QImage Member List
- QIMEvent Class
- QIMEvent Member List
- QInputDialog类
- qinputdialog.h包含文件
- QInputDialog成员列表
- QIntCache Class
- qintcache.h Include File
- QIntCacheIterator Class
- QIntCacheIterator Member List
- QIntCache Member List
- QIntDict Class
- qintdict.h Include File
- QIntDictIterator Class
- QIntDictIterator Member List
- QIntDict Member List
- QIntValidator类
- QIntValidator成员列表
- QIODevice类
- qiodevice.h包含文件
- QIODevice成员列表
- QIODeviceSource Class
- QJisCodec Class
- qjiscodec.h Include File
- QJisCodec Member List
- qkeyboard_qws.h Include File
- QKeyEvent Class
- QKeyEvent Member List
- QKeySequence Class
- qkeysequence.h Include File
- QKeySequence Member List
- QLabel Class
- qlabel.h Include File
- QLabel Member List
- QLayout Class
- qlayout.h Include File
- QLayoutItem Class
- QLayoutItem Member List
- QLayoutIterator Class
- QLayoutIterator Member List
- QLayout Member List
- QLCDNumber Class
- qlcdnumber.h Include File
- QLCDNumber Member List
- QLibrary Class
- qlibrary.h Include File
- QLibrary Member List
- QLineEdit Class
- qlineedit.h Include File
- QLineEdit Member List
- QListBox Class
- qlistbox.h Include File
- QListBoxItem Class
- QListBoxItem Member List
- QListBox Member List
- QListBoxPixmap Class
- QListBoxPixmap Member List
- QListBoxText Class
- QListBoxText Member List
- QListView Class
- qlistview.h Include File
- QListViewItem Class
- QListViewItemIterator Class
- QListViewItemIterator Member List
- QListViewItem Member List
- QListView Member List
- QLocalFs Class
- qlocalfs.h Include File
- QLocalFs Member List
- QLock Class
- qlock_qws.h Include File
- QLock Member List
- QMag
- QMainWindow类
- qmainwindow.h包含文件
- QMainWindow成员列表
- qmake的介绍
- 安装qmake
- 10分钟学会使用qmake
- qmake教程
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- QMap Class
- QMapConstIterator Class
- QMapConstIterator Member List
- qmap.h Include File
- QMapIterator Class
- QMapIterator Member List
- QMap Member List
- QMemArray类
- qmemarray.h包含文件
- QMemArray成员列表
- QMenuBar Class
- qmenubar.h Include File
- QMenuBar Member List
- QMenuData Class
- qmenudata.h Include File
- QMenuData Member List
- QMessageBox类
- qmessagebox.h包含文件
- QMessageBox成员列表
- QMetaObject Class
- qmetaobject.h Include File
- QMetaObject Member List
- QMetaProperty Class
- QMetaProperty Member List
- qmime.h Include File
- QMimeSource Class
- QMimeSourceFactory Class
- QMimeSourceFactory Member List
- QMimeSource Member List
- QMotifPlusStyle Class
- qmotifplusstyle.h Include File
- QMotifPlusStyle Member List
- QMotifStyle Class
- qmotifstyle.h Include File
- QMotifStyle Member List
- QMouseEvent Class
- QMouseEvent Member List
- QMoveEvent Class
- QMoveEvent Member List
- QMovie Class
- qmovie.h Include File
- QMovie Member List
- QMultiLineEdit Class
- qmultilineedit.h Include File
- QMultiLineEdit Member List
- QMutex类
- qmutex.h包含文件
- QMutex成员列表
- qnamespace.h Include File
- qnetwork.h Example File
- QNetworkOperation Class
- QNetworkOperation Member List
- QNetworkProtocol Class
- qnetworkprotocol.h Include File
- QNetworkProtocol Member List
- qnp.h Include File
- QNPInstance Class
- QNPInstance Member List
- QNPlugin Class
- QNPlugin Member List
- QNPStream Class
- QNPStream Member List
- QNPWidget Class
- QNPWidget Member List
- QObject类
- QObjectCleanupHandler Class
- qobjectcleanuphandler.h Include File
- QObjectCleanupHandler Member List
- qobject.h包含文件
- QObjectList类
- qobjectlist.h包含文件
- QObjectListIt类
- QObjectListIt成员列表
- QObjectList成员列表
- QObject成员列表
- QPaintDevice类
- qpaintdevice.h包含文件
- QPaintDevice成员列表
- QPaintDeviceMetrics Class
- qpaintdevicemetrics.h Include File
- QPaintDeviceMetrics Member List
- QPainter类
- qpainter.h包含文件
- QPainter成员列表
- QPaintEvent Class
- QPaintEvent Member List
- QPair Class
- qpair.h Include File
- QPair Member List
- QPalette Class
- qpalette.h Include File
- QPalette Member List
- QPen Class
- qpen.h Include File
- QPen Member List
- QPicture Class
- qpicture.h Include File
- QPicture Member List
- QPixmap Class
- QPixmapCache Class
- qpixmapcache.h Include File
- QPixmapCache Member List
- qpixmap.h Include File
- QPixmap Member List
- QPlatinumStyle Class
- qplatinumstyle.h Include File
- QPlatinumStyle Member List
- QPNGImagePacker Class
- QPNGImagePacker Member List
- qpngio.h Include File
- QPoint类
- QPointArray Class
- qpointarray.h Include File
- QPointArray Member List
- qpoint.h包含文件
- QPoint成员列表
- QPopupMenu Class
- qpopupmenu.h Include File
- QPopupMenu Member List
- QPrinter Class
- qprinter.h Include File
- QPrinter Member List
- QProcess Class
- QProcess Examples
- qprocess.h Include File
- QProcess Member List
- QProgressBar Class
- qprogressbar.h Include File
- QProgressBar Member List
- QProgressDialog类
- qprogressdialog.h包含文件
- QProgressDialog成员列表
- QPtrCollection类
- qptrcollection.h包含文件
- QPtrCollection成员列表
- QPtrDict Class
- qptrdict.h Include File
- QPtrDictIterator Class
- QPtrDictIterator Member List
- QPtrDict Member List
- QPtrList类
- qptrlist.h包含文件
- QPtrListIterator类
- QPtrListIterator成员列表
- QPtrList成员列表
- QPtrQueue类
- qptrqueue.h包含文件
- QPtrQueue成员列表
- QPtrStack类
- qptrstack.h包含文件
- QPtrStack成员列表
- QPtrVector类
- qptrvector.h包含文件
- QPtrVector成员列表
- QPushButton类
- qpushbutton.h包含文件
- QPushButton成员列表
- QRadioButton Class
- qradiobutton.h Include File
- QRadioButton Member List
- QRangeControl类
- qrangecontrol.h包含文件
- QRangeControld成员列表
- QRect类
- qrect.h包含文件
- QRect成员列表
- QRegExp Class
- qregexp.h Include File
- QRegExp Member List
- QRegExpValidator Class
- QRegExpValidator Member List
- QRegion Class
- qregion.h Include File
- QRegion Member List
- QResizeEvent Class
- QResizeEvent Member List
- qrtlcodec.h Include File
- QScreen Class
- QScreen Member List
- QScrollBar类
- qscrollbar.h包含文件
- QScrollBar成员列表
- QScrollView类
- qscrollview.h包含文件
- QScrollView成员列表
- QSemaphore类
- qsemaphore.h包含文件
- QSemaphore成员列表
- QServerSocket Class
- qserversocket.h Include File
- QServerSocket Member List
- QSessionManager Class
- qsessionmanager.h Include File
- QSessionManager Member List
- QSettings Class
- qsettings.h Include File
- QSettings Member List
- QSGIStyle Class
- qsgistyle.h Include File
- QSGIStyle Member List
- QShowEvent Class
- QShowEvent Member List
- QSignal Class
- qsignal.h Include File
- QSignalMapper Class
- qsignalmapper.h Include File
- QSignalMapper Member List
- QSignal Member List
- QSimpleRichText Class
- qsimplerichtext.h Include File
- QSimpleRichText Member List
- QSize类
- QSizeGrip Class
- qsizegrip.h Include File
- QSizeGrip Member List
- qsize.h包含文件
- QSize成员列表
- QSizePolicy Class
- qsizepolicy.h Include File
- QSizePolicy Member List
- QSjisCodec Class
- qsjiscodec.h Include File
- QSjisCodec Member List
- QSlider Class
- qslider.h Include File
- QSlider Member List
- QSocket类
- QSocketDevice Class
- qsocketdevice.h Include File
- QSocketDevice Member List
- qsocket.h包含文件
- QSocket成员列表
- QSocketNotifier Class
- qsocketnotifier.h Include File
- QSocketNotifier Member List
- QSortedList Class
- qsortedlist.h Include File
- QSortedList Member List
- QSound类
- qsound.h包含文件
- QSound成员列表
- QSpacerItem Class
- QSpacerItem Member List
- QSpinBox Class
- qspinbox.h Include File
- QSpinBox Member List
- QSplitter Class
- qsplitter.h Include File
- QSplitter Member List
- QSql类
- QSqlCursor Class
- qsqlcursor.h Include File
- QSqlCursor Member List
- QSqlDatabase Class
- qsqldatabase.h Include File
- QSqlDatabase Member List
- QSqlDriver Class
- qsqldriver.h Include File
- QSqlDriver Member List
- QSqlDriverPlugin Class
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- qsqlquery.h 包含文件
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- qtsciicodec.h Include File
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- qttableview.h Include File
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- qurl.h Include File
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- qwaitcondition.h包含文件
- QWaitCondition成员列表
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- qwhatsthis.h包含文件
- QWhatsThis成员列表
- QWheelEvent Class
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- QWindowsMime Class
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- qwindowsstyle.h Include File
- QWindowsStyle Member List
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- qwizard.h包含文件
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- Sound Example
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- SQL Module - Drivers
- Qt SQL Examples
- sql/overview/basicbrowsing2/main.cpp Example File
- sql/overview/basicbrowsing/main.cpp Example File
- sql/overview/basicdatamanip/main.cpp Example File
- sql/overview/connect1/main.cpp Example File
- sql/overview/create_connections/main.cpp Example File
- sql/overview/custom1/main.cpp Example File
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- sql/overview/del/main.cpp Example File
- sql/overview/extract/main.cpp Example File
- sql/overview/form1/main.cpp Example File
- sql/overview/form2/main.h Example File
- sql/overview/insert/main.cpp Example File
- sql/overview/navigating/main.cpp Example File
- sql/overview/order1/main.cpp Example File
- sql/overview/order2/main.cpp Example File
- sql/overview/retrieve1/main.cpp Example File
- sql/overview/retrieve2/main.cpp Example File
- sql/overview/subclass1/main.cpp Example File
- sql/overview/subclass2/main.cpp Example File
- sql/overview/subclass2/main.h Example File
- sql/overview/subclass3/main.cpp Example File
- sql/overview/subclass3/main.h Example File
- sql/overview/subclass4/main.cpp Example File
- sql/overview/subclass4/main.h Example File
- sql/overview/subclass5/main.cpp Example File
- sql/overview/subclass5/main.h Example File
- sql/overview/table1/main.cpp Example File
- sql/overview/table2/main.cpp Example File
- sql/overview/table3/main.cpp Example File
- sql/overview/table3/main.h Example File
- sql/overview/table4/main.cpp Example File
- sql/overview/table4/main.h Example File
- sql/overview/update/main.cpp Example File
- SQL Table
- 表格样例
- t10/cannon.cpp Example File
- t10/cannon.h Example File
- t10/lcdrange.cpp Example File
- t10/lcdrange.h Example File
- t10/main.cpp Example File
- t11/cannon.cpp Example File
- t11/cannon.h Example File
- t11/lcdrange.cpp Example File
- t11/lcdrange.h Example File
- t11/main.cpp Example File
- t12/cannon.cpp Example File
- t12/cannon.h Example File
- t12/lcdrange.cpp Example File
- t12/lcdrange.h Example File
- t12/main.cpp Example File
- t13/cannon.cpp Example File
- t13/cannon.h Example File
- t13/gamebrd.cpp Example File
- t13/gamebrd.h Example File
- t13/lcdrange.cpp Example File
- t13/lcdrange.h Example File
- t13/main.cpp Example File
- t14/cannon.cpp Example File
- t14/cannon.h Example File
- t14/gamebrd.cpp Example File
- t14/gamebrd.h Example File
- t14/lcdrange.cpp Example File
- t14/lcdrange.h Example File
- t14/main.cpp Example File
- t7/lcdrange.cpp Example File
- t7/lcdrange.h Example File
- t7/main.cpp Example File
- t8/cannon.cpp Example File
- t8/cannon.h Example File
- t8/lcdrange.cpp Example File
- t8/lcdrange.h Example File
- t8/main.cpp Example File
- t9/cannon.cpp Example File
- t9/cannon.h Example File
- t9/lcdrange.cpp Example File
- t9/lcdrange.h Example File
- t9/main.cpp Example File
- Tabdialog
- table/bigtable/main.cpp Example File
- 表格例程
- Tablet Example
- A tiny SAX2 parser
- Demonstration of SAX2 features
- 为什么Qt不用模板来实现信号和槽?
- Tetrix
- Text Related Classes
- Text Edit Example
- Themes (Styles)
- 线程
- Tic Tac Toe
- 时间和日期
- 定时器
- A Tiny Example Featuring a Toggle Action
- Non-GUI Classes
- Advanced use of tool tips
- Trivial Example
- Qt教程一 —— 第一章:Hello, World!
- Qt教程一 —— 第二章:调用退出
- Qt教程一 —— 第三章:家庭价值
- Qt教程一 —— 第四章:使用窗口部件
- Qt教程一 —— 第五章:组装积木
- Qt教程一 —— 第六章:组装丰富的积木!
- Qt教程一 —— 第七章:一个事物领导另一个
- Qt教程一 —— 第八章:准备战斗
- Qt教程一 —— 第九章:你可以使用加农炮了
- Qt教程一 —— 第十章:像丝一样滑
- Qt教程一 —— 第十一章:给它一个炮弹
- Qt教程一 —— 第十一章:悬在空中的砖
- Qt教程一 —— 第十三章:游戏结束
- Qt教程一 —— 第十四章:面对墙壁
- 介绍
- 大图片
- 数据元素
- 主体很容易
- 实现图形用户界面
- 画布控制
- 文件处理
- 获得数据
- 设置选项
- 项目文件
- 完成
- User Interface Compiler (uic)
- 关于Unicode
- Widgets Example
- Wizard
- wizard/wizard.cpp Example File
- wizard/wizard.h Example File
- Transformed Graphics Demo
- Qt XML Examples
- Walkthrough: Using SAX2 features with the Qt XML classes
- Walkthrough: How to use the Qt SAX2 classes
- XML
- Qt Xt/Motif Support Extension
- 适应2000年问题声明
QDialog类
QDialog类是对话框窗口的基类。 详情请见……
#include <qdialog.h>
继承了QWidget。
被QColorDialog、QErrorMessage、QFileDialog、QFontDialog、QInputDialog、QMessageBox、QProgressDialog、QTabDialog和QWizard继承。
所有成员函数的列表。
公有成员
- QDialog ( QWidget*parent = 0, constchar*name = 0, boolmodal = FALSE, WFlagsf = 0 )
- ~QDialog ()
- enum DialogCode { Rejected, Accepted }
- int result () const
- virtual void show ()
- void setOrientation ( Orientationorientation )
- Orientation orientation () const
- void setExtension ( QWidget*extension )
- QWidget * extension () const
- void setSizeGripEnabled ( bool )
- bool isSizeGripEnabled () const
公有槽
- int exec ()
属性
- bool sizeGripEnabled- 大小控制是否生效
保护成员
- void setResult ( inti )
保护槽
- virtual void done ( intr )
- virtual void accept ()
- virtual void reject ()
- void showExtension ( boolshowIt )
详细描述
QDialog类是对话框窗口的基类。对话框窗口是主要用于短期任务以及和用户进行简要通讯的顶级窗口。QDialog可以是模式的也可以是非模式的。QDialog支持扩展性并且可以提供返回值。它们可以有默认按钮。QDialog也可以有一个QSizeGrip在它的右下角,使用setSizeGripEnabled()。
注意QDialog使用父窗口部件的方法和Qt中其它类稍微不同。对话框总是顶级窗口部件,但是如果它有一个父对象,它的默认位置就是父对象的中间。它也将和父对象共享工具条条目。
这里有三种有用的对话框:
- 模式对话框就是阻塞同一应用程序中其它可视窗口的输入的对话框:用户必须完成这个对话框中的交互操作并且关闭了它之后才能访问应用程序中的其它任何窗口。模式对话框有它们自己的本地事件循环。用来让用户选择一个文件或者用来设置应用程序参数的对话框通常是模式的。调用exec()来显示模式对话框。当用户关闭这个对话框,exec()将提供一个可用的返回值并且这时流程控制继续从调用exec()的地方进行。通常,我们连接默认按钮,例如“OK”到accept()槽并且把“Cancel”连接到reject()槽,来使对话框关闭并且返回适当的值。另外我们也可以连接done()槽,传递给它Accepted或Rejected。
- 非模式对话框是和同一个程序中其它窗口操作无关的对话框。在字处理软件中查找和替换对话框通常是非模式的来允许同时与应用程序主窗口和对话框进行交互。调用show()来显示非模式对话框。show()立即返回,这样调用代码中的控制流将会继续。在实践中你将会经常调用show()并且在调用show()的函数最后,控制返回主事件循环。
- “半模式”对话框是立即把控制返回给调用者的模式对话框。半模式对话框没有它们自己的事件循环,所以你将需要周期性地调用QApplication::processEvents()来让这个半模式对话框有处理它的事件的机会。进程对话框(例如QProgressDialog)就是一个实例,在你想让用户能够和进程对话框交互的地方那个,例如撤销一个长期运行的操作,但是需要实际上执行这个操作。半模式对话框模式标记被设置为真并且调用show()函数来被显示。
默认按钮
对话框的“默认”按钮适当用户按下回车键或者换行键时被按下的按钮。这个按钮用来表示用户接受对话框的设置并且希望关闭这个对话框。使用QPushButton::setDefault()、QPushButton::isDefault()和QPushButton::autoDefault()来设置并且控制对话框的默认按钮。
扩展性
扩展性是可以用两种方式来显示对话框:一个局部对话框用来显示通常最常用的选项,和一个显示所有选项的完全对话框。通常可扩展的对话框将初始化为一个局部对话框,但是有一个“更多”按钮。如果用户点击这个“更多”按钮,完全对话框将会出现。扩展性是由setExtension()、setOrientation()和showExtension()。
返回值(模式对话框)
模式对话框通常用在需要返回值的地方,例如需要分清用户按下“OK”还是“Cancel”。对话框可以通过调用accept()或reject()槽来被关闭,并且exec()将返回适当的Accepted或Rejected。exec()返回这个对话框的结果。如果窗口还没有被销毁,这个结果也可以通过result()得到。如果WDestructiveClose标记被设置,那么当exec()返回时,对话框被删除。
实例
模式对话框。
QFileDialog *dlg = new QFileDialog( workingDirectory, QString::null, 0, 0, TRUE ); dlg->setCaption( QFileDialog::tr( "Open" ) ); dlg->setMode( QFileDialog::ExistingFile ); QString result; if ( dlg->exec() == QDialog::Accepted ) { result = dlg->selectedFile(); workingDirectory = dlg->url(); } delete dlg; return result;
非模式对话框。在show()调用之后,控制返回到主事件循环中。
int main( int argc, char **argv ) { QApplication a( argc, argv );
int scale = 10;
LifeDialog *life = new LifeDialog( scale ); a.setMainWidget( life ); life->setCaption("Qt Example - Life"); life->show();
return a.exec(); }
半模式对话框的实例请参考QProgressDialog文档。
请参考QTabDialog、QWidget、QProgressDialog、GUI Design Handbook: Dialogs, Standard、抽象窗口部件类和对话框类。
成员类型文档
QDialog::DialogCode
模式对话框返回的值。
- QDialog::Accepted
- QDialog::Rejected
成员函数文档
QDialog::QDialog ( QWidget*parent = 0, constchar*name = 0, boolmodal = FALSE, WFlagsf = 0 )
构造一个父对象为parent、名称为name的对话框。如果modal为假(默认),这个对话框是非模式的并且应该使用show()来被显示。如果modal为真,这个对话框使用exec()来被显示,则它是模式的,也就是说会阻塞这个应用程序中其它窗口的输入。如果modal为真并且使用show()来被显示,则它是半模式的。
窗口部件f将被传递给QWidget的构造函数。
如果,例如,我们不想要对话框的标题栏中“这是什么”按钮,在f中传递WStyle_Customize | WStyle_NormalBorder | WStyle_Title | WStyle_SysMenu。
我们建议你传递一个非空的父对象。
请参考QWidget::setWFlags()和Qt::WidgetFlags。
QDialog::~QDialog ()
销毁这个对话框,删除它所有的子对象。void QDialog::accept () [虚 保护 槽]
隐藏模式对话框并且设置结果代码为Accepted。请参考reject()和done()。
实例:chart/setdataform.cpp。
void QDialog::done ( intr ) [虚 保护 槽]
隐藏模式对话框并且设置结果代码为r。这将使用本地事件循环来完成,并且exec()返回r。如果对话框使用WDestructiveClose来被设置,done()也会销毁这个对话框。如果对话框是应用程序的主窗口部件,那么应用程序终止。
请参考accept()、reject()、QApplication::mainWidget()和QApplication::quit()。
int QDialog::exec () [槽]
执行模式对话框。控制传递给这个对话框一直到用户关闭它,在本地事件循环完成的点并且函数返回DialogCode结果。在用户关闭这个对话框之前,不能和同一应用程序中的其它窗口交互。对于非模式或半模式对话框请使用show()。请参考show()和result()。
实例:chart/chartform.cpp、i18n/main.cpp、network/networkprotocol/view.cpp、a href="qdir-example.html#x1805">qdir/qdir.cpp、showimg/showimg.cpp和wizard/main.cpp。
QWidget* QDialog::extension () const
返回对话框的扩展或者如果没有扩展被定义返回0。请参考setExtension()。
bool QDialog::isSizeGripEnabled () const
如果大小控制生效,返回真,否则返回假。详细情况请参考“sizeGripEnabled”属性。
Orientation QDialog::orientation () const
返回对话框的扩展方向。请参考setOrientation()。
void QDialog::reject () [虚 保护 槽]
隐藏模式对话框并且设置结果代码为Rejected。请参考accept()和done()。
int QDialog::result () const
返回模式对话框的结果代码,Accepted或Rejected。
如果对话框使用WDestructiveClose标记构造,不要调用这个函数。(无论如何,exec()返回结果代码。)
void QDialog::setExtension ( QWidget*extension )
设置窗口部件extension为对话框的扩展,删除任何以前的扩展。对话框拥有扩展的所有权。注意如果传递0,则任何存在的扩展都将被删除。只有当对话框被隐藏时,这个函数才能被调用。
请参考showExtension()、setOrientation()和extension()。
void QDialog::setOrientation ( Orientationorientation )
如果orientation是Horizontal,扩展将会显示在对话框主区域的右面。如果orientation是Vertical,扩展将会显示在对话框主区域的下面。请参考orientation()和setExtension()。
void QDialog::setResult ( inti ) [保护]
设置模式对话框的结果代码为i。
void QDialog::setSizeGripEnabled ( bool )
设置大小控制是否生效。详细情况请参考“sizeGripEnabled”属性。
void QDialog::show () [虚]
显示非模式或半模式对话框。控制立即返回到调用代码中。对话框没有一个本地事件循环,所以你必须定时地调用QApplication::processEvents()来使对话框能够得到处理它的事件的机会。
如果在构造函数中,模式标记被设置为真,对话框将为半模式。
警告:
在Qt 2.x中,在一个模式对话框中调用show()进入一个本地事件循环并且像exec()一样工作,但是不返回exec()所返回的结果代码。Trolltech已经一直警告这样做是不被建议的。
请参考exec()。
实例:movies/main.cpp、showimg/showimg.cpp和sql/overview/form1/main.cpp。
从QWidget中重新实现的。
void QDialog::showExtension ( boolshowIt ) [保护 槽]
如果showIt为真,对话框的扩展被显示,否则扩展被隐藏。这个槽通常被连接到QPushButton的QButton::toggled()信号上。
如果对话框不是可视的,或者没有扩展,则什么都不会发生。
请参考show()、setExtension()和setOrientation()。
属性文档
bool sizeGripEnabled
这个属性保存的是大小控制是否生效。
当这个属性生效时,QSizeGrip被放置到对话框的右下角。默认情况下,大小控制失效。
通过setSizeGripEnabled()设置属性值并且通过isSizeGripEnabled()来获得属性值。
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