The book of qt 4 the art of building qt applications - phần 5 pptx
The book of qt 4 the art of building qt applications - phần 5 pptx
... query.Thisisfollowed bythelistofstrings to be displayed.Then
comesthe indexof thelistele ment that thedrop-downwidgetdisplaysatthe be-
ginning .The next-to-lastparameter specifies whether theusercan add ... andisdescribedinRFCs2 0 45 , 2 046 ,
and2 047 .
1 94
6 .5 Ready-made DialogsinQt
6 .5. 4Input Dialogs
Forsimplequeries,Qtprovides various template inputdialogs,consistingofasuit-
able in...
molkentin-the book of qt 4-the art of building qt applications
... Keys(QMultiMap) 40 7
B .4. 3HashTableswithQHash 40 9
B .4. 4Hash-basedAmountswithQSet. 41 1
B.5Algorithms 41 2
B .5. 1The foreach Keyword 41 2
B .5. 2Sorting 41 3
B .5. 3Sorting in Unsorted Containers 41 4
B .5. 4CopyingContainer ... 39
1 .4. 2QString andOther Classesnot Derived from QObject 40
1 .4. 3The Qt InheritanceHierarchy 41
1.5QtataGlance 42
1 .5. 1The Qt Libraries...
The book of qt 4 the art of building qt applications - phần 1 ppt
... recycled paper
Qt 4
Qt 4
THE ART OF BUILDING Qt APPLICATIONS
DANIEL MOLKENTIN
THE BOOK of
THE BOOK of
Qt 4
THE
BOOK
of
THE
BOOK
of
Qt 4
®
MOLKENTIN
1 Basics,Tools, and First Code
Several Qt classeshaveQObject ... 39
1 .4. 2QString andOther Classesnot Derived from QObject 40
1 .4. 3The Qt InheritanceHierarchy 41
1.5QtataGlance 42
1...
The book of qt 4 the art of building qt applications - phần 2 docx
... now
ByteConverterDialog
decEdit
textChanged()
setText()
hexEdit
textChanged()
setText()
binEdit
textChanged()
setText()
decChanged()
hexChanged()
binChanged()
We can connect thesignals andslots of theline-edit widgets from theByteCon-
verterDialog to thesignals andslots of theByteConverter class, for example, the
hexChanged()signalofthe decEdit object ... enter them in theIndextabofthe...
The book of qt 4 the art of building qt applications - phần 3 pptx
... areasofthe window,orposition
them floatingover themainwindow.Iftheyaredocked, thelatter haveasplitter
(see Chapter 5. 3onpage 150 ), withwhich theusercan fine-tune thesizeratio
of thedockwindowto themainwindow,ifnecessary.Dockwindowsalsohavea
handle ... usingthe Designer,which allowsthe basicgraphical
frameworkofmostapplications to be puttogether “bymouseclick” in Qt versions
4. 1and late...
The book of qt 4 the art of building qt applications - phần 4 pot
... ClickSplitterHandle::mouseDoubleClickEvent()wefirstdetermine thealignment
of thesplitter.Weobtainthe positionofthe splitter,using theQSplitter::indexOf()
method. This is also thepositionofthe widgetlyingtothe rightof(or directly
beneath) thesplitter.
Forreasons ... lastUncollapsedSizeremembers thelastsize
of thewidgetinanuncollapsed state. If th is is 0for anyreason ,the implementation
us...
The book of qt 4 the art of building qt applications - phần 6 doc
... weconstruct thedescription of
theaddressbook entryusingthe <table>tag. Each rowof thetable consists of
twocells,one of which contains thenameofthe address book field (the key)and
theother ,the matching ... QModelIndex&parent)const
{
Q_UNUSED(parent);
returnaddressBook.at(0).count();
}
Viewsthatuse ouraddressbook modelcan discover thelabelingofthe rowsand
columns via thehead...
The book of qt 4 the art of building qt applications - phần 7 pot
... nowconnect theclicked()signalofthe Screenshot!buttontothe slot that
prepares thescreenshot,and thesignalofthe Printbuttontothe slot that enables
theconfiguration of theprintingparameters. Then wecallgrabDesktop(), ... procedure(QPainter::CompositionMode_SourceIn), thecolor
of thenewpixel can be derived from thesource, reducedbythealpha value of
thedestination .The reduct ionofthe alphac...
The book of qt 4 the art of building qt applications - phần 8 doc
... QStringobjects,
making useofthe toLocal8Bit()method internally.
11.4Startingand ControllingProcesses
Nowandagainyou maywanttomake useofthe services of command-linebased
programs, particularlyon Unix-based operating ... and
usethese to read datainthe orderinwhich theywerereadinbyoperator<<().
Then wefill therespectivepropertyof thepasseddataset instance usingthe corre-
sponding setmetho...
The book of qt 4 the art of building qt applications - phần 9 docx
... In ourcasethese arecuteedit_de.qm, cuteedit_fr.q m,
andcuteedit_it.qm.
14. 1.3Using Translations in theProgram
Loading thecorrect translationwhenthe program starts is thetaskofthe QTrans-
latorclass.Itwillsearchfor ... the rsttimeinthe UserRole, in this casethe com-
plete contents of <description>. We willuse this later to displaythecontents of
thecurrent entryin aQTextBrowser.
In...
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