By Jasmin Blanchette

The one professional, Best-Practice consultant to Qt 4.3 ProgrammingUsing Trolltech's Qt you could construct industrial-strength C++ purposes that run natively on home windows, Linux/Unix, Mac OS X, and embedded Linux with no resource code alterations. Now, Trolltech insiders have written a start-to-finish advisor to getting notable effects with the newest model of Qt: Qt 4.3. choked with lifelike examples and in-depth recommendation, this can be the publication Trolltech makes use of to coach Qt to its personal new hires. greatly revised and multiplied, it finds modern top Qt programming styles for every thing from enforcing model/view structure to utilizing Qt 4.3's superior pics help. you will find confirmed suggestions for nearly each GUI improvement job, in addition to subtle recommendations for delivering database entry, integrating XML, utilizing subclassing, composition, and extra. even if you are new to Qt or upgrading from an older model, this publication will help accomplish every thing that Qt 4.3 makes attainable. thoroughly up to date all through, with major new assurance of databases, XML, and Qtopia embedded programmingCovers all Qt 4.2/4.3 alterations, together with home windows Vista help, local CSS help for widget styling, and SVG dossier generationContains separate second and 3D chapters, insurance of Qt 4.3's new pictures view sessions, and an creation to QPainter's OpenGL back-endIncludes new chapters on look-and-feel customization and alertness scriptingIllustrates Qt 4's model/view structure, plugin help, structure administration, occasion processing, box sessions, and lots more and plenty morePresents complicated options lined in no different book—from developing plugins to interfacing with local APIsIncludes a brand new appendix on Qt Jambi, the recent Java model of Qt

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Extra resources for C++ GUI Programming with Qt4 (Second Edition)

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The letter 'Q' was chosen as the class prefix because the letter looked beautiful in Haavard's Emacs font. The 't' was added to stand for "toolkit", inspired by Xt, the X Toolkit. The company was incorporated on March 4, 1994, originally as Quasar Technologies, then as Troll Tech, and today as Trolltech. In April 1995, thanks to a contact made through one of Haavard's university professors, the Norwegian company Metis gave them a contract to develop software based on Qt. Around this time, Trolltech hired Arnt Gulbrandsen, who during his six years at Trolltech devised and implemented an ingenious documentation system as well as contributing to Qt's code.

Also thanks to James Cloos for providing a condensed version of the DejaVu Mono font that we used as the basis for our monospaced font. Trolltech's Cathrine Bore handled the contracts and legalities on our behalf. Thanks also to Nathan Clement for the troll illustrations, and to Audrey Doyle for her careful proofreading. And finally, thanks to our editor, Debra Williams-Cauley, both for her support and for making the process as hassle-free as possible, and to Lara Wysong for handling the production practicalities so well.

The most important modules are QtCore, QtGui, QtNetwork, QtOpenGL, QtScript, QtSql, QtSvg, and QtXml. The header file contains the definition of all the classes that are part of the QtCore and QtGui modules. Including this header saves us the bother of including every class individually. h, instead of including and using forward declarations for QCheckBox, QLabel, QLineEdit, and QPushButton, we could simply have included . However, it is generally bad style to include such a big header file from another header file, especially in larger applications.

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