Mobile and Embedded

Hi, Did you install the PostgreSQL dev package on your Raspberry Pi ?

@Maxim-DC Yes it is possible. You can find an example here. The exact file in it where it is used.

Hi and welcome to devnet, Did you try with QCamera and it's friendly classes ?

Could you say if you found some solution?

And how can I put the activity in the background? If I overwrite closeEvent(QCloseEvent *) what should I write inside in order to make the application run in the background?

Hi @Rohith Since you are a beginner you should start with QtQuick basics. Qt's documentation is your friend here. Following topics will be helpful: http://doc.qt.io/qt-5/gettingstartedqml.html http://doc.qt.io/qt-5/qmlapplications.html http://doc.qt.io/qt-5/qtquick-index.html Now since your are mostly focussing on animations check out the following: http://doc.qt.io/qt-5/qtquick-usecase-animations.html http://doc.qt.io/qt-5/qtquick-statesanimations-topic.html JavaScript: javascript-environment-for-qml-applications check out the individual links under that topic http://doc.qt.io/qt-5/qtquick-usecase-integratingjs.html JSON: Since QML is based upon JavaScript so it supports JSON out of the box. Check this list of JavaScript Objects and Functions. Examples for usage of JSON http://doc.qt.io/qt-5/qtquick-demos-tweetsearch-example.html https://wiki.qt.io/JSONListModel XML: QML has eased the use of XML by providing XmlListModel and XmlRole Check out an example here http://doc.qt.io/qt-5/qtquick-demos-rssnews-example.html Apart from that I think you should also have a look at Local Storage support. QML has inbuilt support for SQLite database. Going further you may also feel the need to interact with QML from C++. Following topics should help you in that case: http://doc.qt.io/qt-5/qtqml-cppintegration-topic.html http://doc.qt.io/qt-5/qtqml-cppintegration-interactqmlfromcpp.html Later you may feel a need to be able to create QML object on the fly i.e at runtime to improve performance and other. Following will help you in that case: http://doc.qt.io/qt-5/qtqml-javascript-dynamicobjectcreation.html http://doc.qt.io/qt-5/qml-qtquick-loader.html To fine tune them: http://doc.qt.io/qt-5/qtquick-performance.html Also an important concept to go through and most frequently required is models and views. QML supports C++ models as well. For an overview http://doc.qt.io/qt-5/qtquick-modelviewsdata-modelview.html For usage of C++ models http://doc.qt.io/qt-5/qtquick-modelviewsdata-cppmodels.html and the QML inbuilt models http://doc.qt.io/qt-5/qtqml-models-qmlmodule.html Hope this helps you.

Qt 5.1.1 being pretty old, is updating to a more recent version an option ?

Hi @imanpakii, It's indeed the wrong place, please do not highjack the thread of other people with unrelated questions.

@rostamiani Make use of the other Layout properties as described here. Set them for TextField and other items.

@rostamiani Yes StackView seems to be a good candidate.

Surprisingly, I was able to fix this by clearing the native iOS cache: [[NSURLCache sharedURLCache] removeAllCachedResponses]; This call has effect on both native iOS networking and Qt network code. In order to use the above call you have to rename your file to *.mm and include <Foundation/Foundation.h>.

QProcess Class is used to start external programs and to communicate with them. create a new QProcess and input args to /bin/sh. Below code has been tested working. Thanks to p3c0, if not, answer below will not be available : QProcess *myProcess = new QProcess; QStringList args; args<"-c"<<"sudo -S ifconfig eth0 192.168.100.1 < /var/passwd.txt"); myProcess->start("/bin/sh",args);

RGB vs BGR is really not an endianness question, you can hit that problem with both. It's about how the data is stored. However the endianness can come up when transferring that data further down which is what might be hitting you. Anyway, glad you found a workaround