Download Advanced Qt Programming: Creating Great Software with C++ by Mark Summerfield PDF

By Mark Summerfield

This ebook is aimed toward current C++/Qt programmers and provides rules and ideas which are too complex or really expert (although now not unavoidably difficult), for a primary ebook on Qt.

Qt has now grown to over seven hundred periods and good over 1000000 phrases of documentation, a long way an excessive amount of to hide in one quantity. So rather than overlaying every thing very thinly, the ebook makes a speciality of key components of Qt expertise and attempts to supply extra entire assurance than is to be had elsewhere.

The publication is totally sensible in emphasis, with each process illustrated by means of operating code. The examples express Qt top practices, and feature been demonstrated on Linux, Mac OS X, and home windows, utilizing Qt 4.6 and the place attainable (e.g., utilizing #if QT_VERSION), Qt 4.5. (The examples and a pattern bankruptcy should be downloaded from the book's online page. Amazon don't permit URLs so google for "qtrac" to discover it.)

The book's major subject matters are hybrid desktop/Internet functions, threading, wealthy textual content dealing with, Qt's graphics/view structure, and Qt's model/view structure (to which 4 chapters are devoted), even though many different subject matters are lined. in addition to every one chapter's major topic, plenty of different periods, equipment, and strategies are used at any place they make experience, to teach as many Qt beneficial properties as attainable. So even the main skilled Qt programmer should still detect features of Qt they weren't conscious of, notice new recommendations, and be encouraged with new ideas.</i>

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Extra resources for Advanced Qt Programming: Creating Great Software with C++ and Qt 4 (Prentice Hall Open Source Software Development Series)

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Otherwise we check to see if the QString scriptOrScriptName private member variable holds an actual script or only the name of a script; and in the latter case we attempt to read in the script’s text. Instead of creating a QTextStream, we open the file in binary mode and convert the QByteArray returned by the QFile::readAll() method into Unicode using the static QString::fromUtf8() method. Once the script is ready we tell the QWebPage’s main frame to evaluate it, and then we notify any connected objects that we have successfully finished.

Pro file. 3. gov Icon in cache? 3 The Weather Tray Icon application’s flow of control For completeness, we will show the private populateToolTip() method, which we will review in three parts, followed by its two private helper methods. isEmpty()) toolTipText += toolTipField("Weather", "green", weather); ··· Internet-Aware Widgets 17 Here we extract the text elements that we want to include in the tooltip, although we have omitted most of the code since each element follows the same (or very similar) pattern as the code shown for the “weather” element.

In the following two subsections we will use the browser window as a fundamental part of two hybrid desktop/Internet applications. We will also learn how to download web content invisibly behind the scenes and how to inject JavaScript into web pages so that we can extract information from them. And we will learn how to enhance the browser window so that it can seamlessly display standard and custom Qt widgets that users can interact with. Creating Web Site-Specific Applications ||| If people are using one particular web site a lot of the time then it should be possible to provide them with more convenience and functionality by creating a web site-specific application geared to their needs.

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