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We want to show you how easy it is to build amazing UIs with Qt Quick and we want to teach you how to build these UIs. Now we must make good on these promises and this is exactly the motivation for this Qt Quick tutorial. Qt Quick is easy-to-use and easy-to-learn, it bridges the chasm between designers and developers, it is powerful and it lets us write fluid UIs. We extend QML with our own components in the very same way. Actually, all visual QML components are implemented as QGraphicObjects and are exposed to QML through Qt's meta-object system. All the properties, signals and slots of a QObject-derived class are instantly accessible from QML.
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Now compare this to a more traditional development process in which the designers initially come up with a fantastic UI design in Photoshop and Flash followed by the developers reimplementing this design in C ++ or Java and, after a couple of days or weeks even, the developers proudly show their result, which by the way doesn't even remotely resemble the original design (see the famous tree swing cartoon for an illustration).Īs if this is not enough yet, Qt Quick has access to the full power of Qt. This also gives developers and designers the opportunity to work side-by-side during the entire development process toward enhancing the UI and adding killer features to the application. So essentially, the designers create a UI and the developers add the functionality to that UI while having the ability to maintain close interaction with the designers. The medium I am referring to is, of course, QML code.
This is all due to a very simplified development process beginning with UI designers getting access to Qt Quick through Quick Designer: a visual design tool for QML applications which closes the gap between UI designers and developers because it facilitates communication via one common medium.
Quite honestly, Qt Quick empowers teams to develop applications boasting the best possible interactivity with the best possible functionality. Despite its simplicity, Qt Quick makes it easy to write the kind of fluid UIs popularized by Apple's iPhone. Thanks to its similarity to CSS and JavaScript and its simplicity, QML is easily picked up by web and Flash developers, and it is a no-brainer for Qt/C++, C and Java developers. The rest, typically the behavioral parts like the response to a mouse click, is written in JavaScript.
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Large parts of QML code are just CSS-style name-value pairs of properties (e.g., color: "red"). Qt Quick provides a declarative language called QML (Qt Meta-object Language) for the design and implementation of UIs. Such an interest is quite amazing for a new and unproven technology, so Qt Quick must have hit a nerve - or actually a couple of nerves. Many more companies are seriously evaluating Qt Quick. Companies use it to build user interfaces (UIs) for set-top boxes, tablet devices, in-vehicle infotainment systems, e-readers or mobile phones. 2.10 Module 9 - Writing New QML Components in Qt/C++.Full Screen Mode: Controller Window will no longer automatically hide when the mouse in inside the Controller window.No more "Unknown Exception while loading the Preferences File." when running a new Version of QT Sync for the first time.
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