Download e-book for iPad: Advanced Qt Programming: Creating Great Software with C++ by Mark Summerfield

By Mark Summerfield

ISBN-10: 0321635906

ISBN-13: 9780321635907

This publication is geared toward present C++/Qt programmers and offers principles and suggestions which are too complicated or really good (although now not inevitably difficult), for a primary publication on Qt.

Qt has now grown to over seven-hundred sessions and good over one million phrases of documentation, some distance an excessive amount of to hide in one quantity. So rather than overlaying every little thing very thinly, the ebook makes a speciality of key parts of Qt know-how and attempts to supply extra finished assurance than is on hand elsewhere.

The booklet is totally sensible in emphasis, with each approach illustrated by means of operating code. The examples express Qt top practices, and feature been confirmed 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 web content. Amazon don't enable URLs so google for "qtrac" to discover it.)

The book's major topics 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 supposing many different themes are lined. in addition to each one chapter's major topic, plenty of different sessions, equipment, and strategies are used anyplace they make feel, to teach as many Qt positive factors as attainable. So even the main skilled Qt programmer should still detect features of Qt they weren't conscious of, realize new options, and be encouraged with new ideas.</i>

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

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It also has a context menu and a toolbar (which can be hidden). 7. 7 The Web Inspector (Document Object Model), and the resources it uses (for example, style sheets, images, and JavaScript scripts), including their sizes and load times, and a lot more besides. 6, the Web Inspector can be invoked in a more conventional way by creating a QWebInspector object, giving it a QWebPage, and then calling its show() method. 6 QWebInspector class to work) we must switch on the QWebSettings::DeveloperExtrasEnabled web setting.

This has the advantages that we get complete control over the behavior and appearance of the widgets we embed, and it allows us complete freedom to build in whatever functionality we need. The disadvantage of this approach is that the browser must be able to support embedded Qt widgets. 12. This web page is embedded in a browser window component and used in the Matrix Quiz application (matrixquiz). The web page shows two randomly generated 3 × 3 matrices and invites the user to add them up by entering the appropriate values in the third matrix whose initial values are all zeros.

Void BrowserWindow::urlChange(const QUrl &url) { emit urlChanged(url); progressLabel->setText(tr("Loading")); } Whenever the web page’s URL changes (whether the user clicked a link, or used the set URL action, or used the history), this slot is called. We emit our own urlChanged() signal as a convenience to BrowserWindow users, and update the progress label to indicate that loading has commenced. void BrowserWindow::loadFinish(bool ok) { emit loadFinished(ok); progressLabel->setText(ok ? tr("Loaded") : tr("Canceled")); } When loading finishes, this slot is called with the bool ok signifying whether the load was successful.

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Advanced Qt Programming: Creating Great Software with C++ and Qt 4 (Prentice Hall Open Source Software Development Series) by Mark Summerfield

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