#QT QUICK DESKTOP APPLICATION EXAMPLE ANDROID#
#QT QUICK DESKTOP APPLICATION EXAMPLE WINDOWS#

The app in question is Phototales, a consumer orientated mobile app that leverages machine learning algorithms to automatically design photo-books from the user's photo library. Having worked some time at Edeltech on a large mobile app developed with Qt I would like to take a moment and provide some thoughts on my experience.

#QT QUICK DESKTOP APPLICATION EXAMPLE ANDROID#

By default your app has the exact same UI on both Android and iOS. not only is your app's logic layer reused but so is your user interface since your app ships with its own rendering engine to render the UI without the need for native components. Where does Qt sit in the world of cross-platform solutions? Well, Qt takes the custom rendering engine approach, i.e. React Native, Ionic, Kotlin Cross-Platform, Xamarin, Flutter) I think it is worth taking a moment to look at Qt, a mobile cross-platform solution since 2013. With more and more cross-platform solutions available (e.g. You can test how the controls on your application or style will behave on a mobile platform by setting the environment variable QT_QUICK_CONTROLS_MOBILE, to force a behavior optimized for mobile devices.Using Qt to develop mobile applications (iOS + Android) is an interesting choice that often goes under the radar. Testing Desktop and Mobile behavior of the controls

This is a known limitation and a workaround is to add potentially missing imports in one of the qml files of the application using the controls. The files embedded in resources are not scanned by this tool though and when linking statically, some required imports used by the Qt Quick Controls can be forgotten. Note: On iOS, the qmlimportscanner tool is used to parse the required qml imports so they can be deployed accordingly. Using resources facilitates the deployment of the Qt Quick Controls though it has limitations that still need to be addressed.

#QT QUICK DESKTOP APPLICATION EXAMPLE WINDOWS#

Note: On Windows, the Windows Deployment Tool only deploys the Qt Quick Controls plugin and its qmldir file. qml files present under qml/ QtQuick/Controls. In practice, the Styles and Private subfolders can be deleted as well as all. For deployment, these files can be ignored.

js/.qml files are still placed into the plugin directory though for keeping the development tasks convenient, debugging and autocompletion capabilities remain unchanged. It is only necessary to deploy the qtquickcontrolsplugin C++ library and its qmldir file found in the plugin directory qml/ QtQuick/Controls. Since Qt 5.2, the Qt Quick Controls JavaScript and QML files are embedded into the plugin using Qt resources (.qrc) for the QtQuick.Controls and imports. If you need to expose data to QML components, you need to set them to the context of the current QML engine. You can find the list of all registering functions here. If you need to register a C++ class to use from QML, you can call, for example, qmlRegisterType() before declaring your QQmlApplicationEngine. This is because it is relying on the widget module to provide the native look and feel. Though you can use QGuiApplication instead, doing this will eliminate platform-dependent styling. Note: We are using QApplication and not QGuiApplication in this example. QQmlApplicationEngine engine( 'main.qml') This ensures that you can control top level window properties from QML.ДЄ basic example of a source file that makes use of controls is shown here: #include #include int main( int argc, char *argv ) With Qt Quick Controls, declare an ApplicationWindow as the root item of your application and launch it by using the QQmlApplicationEngine instead. Controls 1.2 Creating a basic exampleДЄ basic example of a QML file that makes use of controls is shown here:ДЇor an overview of the controls provided by Qt Quick Controls, you can look at the Gallery example.ДЄlthough we have traditionally used a QQuickView window to display QML files in a C++ application, doing this means you can only set window properties from C++. The QML types can be imported into your application using the following import statement in your. The Qt Quick Controls provide a set of UI controls to create user interfaces in Qt Quick.

Qt quick desktop application example