By Jasmin Blanchette
The one reputable, 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 awesome effects with the most recent model of Qt: Qt 4.3. choked with life like examples and in-depth suggestion, this is often the e-book Trolltech makes use of to educate Qt to its personal new hires. generally revised and elevated, it unearths latest most sensible Qt programming styles for every little thing from enforcing model/view structure to utilizing Qt 4.3's more advantageous images aid. you will find confirmed strategies for nearly each GUI improvement activity, in addition to refined recommendations for offering database entry, integrating XML, utilizing subclassing, composition, and extra. no matter if you are new to Qt or upgrading from an older model, this ebook might actually 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 adjustments, together with home windows Vista help, local CSS aid for widget styling, and SVG dossier generationContains separate 2nd and 3D chapters, assurance of Qt 4.3's new images view periods, and an advent to QPainter's OpenGL back-endIncludes new chapters on look-and-feel customization and alertness scriptingIllustrates Qt 4's model/view structure, plugin aid, format administration, occasion processing, box periods, and lots more and plenty morePresents complicated concepts coated in no different book—from developing plugins to interfacing with local APIsIncludes a brand new appendix on Qt Jambi, the hot Java model of Qt
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Additional info for C++ GUI Programming with Qt 4 (2nd Edition) (Prentice Hall Open Source Software Development Series)
13 (a). 6. Click the form to deselect any selected widgets, then click Form|Lay Out in a Grid. Now drag the form's bottom-right corner up and left to make the form as small as it will go. 13 (b). 7. Set the two vertical spacer items' sizeHint property to [20, 0]. 13. Laying out the form's children in a grid [View full size image] The resulting grid layout has two columns and four rows, giving a total of eight cells. The Primary Key group box, the leftmost vertical spacer item, the Secondary Key group box, and the Tertiary Key group box each occupy a single cell.
Unicode() + 1; } The constructor hides the secondary and tertiary parts of the dialog. It also sets the sizeConstraint property of the form's layout to QLayout::SetFixedSize, making the dialog non-resizable by the user. The layout then takes over the responsibility for resizing, and resizes the dialog automatically when child widgets are shown or hidden, ensuring that the dialog is always displayed at its optimal size. The setColumnRange() slot initializes the contents of the comboboxes based on the selected columns in the spreadsheet.
They don't appear when the form is run. 8. The form with the layouts Now click Edit|Edit Tab Order. 9. Click each widget in turn in the order you want them to accept focus, then click Edit|Edit Widgets to leave tab order mode. 9. Setting the form's tab order To preview the dialog, click the Form|Preview menu option. Check the tab order by pressing Tab repeatedly. Close the dialog using the close button in the title bar. pro). ui and to generate the appropriate makefile rules to invoke uic, Qt's user interface compiler.