Mobile and Embedded

@SGaist thanks for the idea, I made two QSerialPort and both the arduinos work on the same QT window :-)

You can connect to a remote gdbserver from Qt Creator. See the remote debugging documentation. I think you misunderstood, what was suggested is that you can do this with QEMU but that is also applicable to hardware. It's just easier to show with the emulator because it's something that everybody can install.

@SGaist thank you :)

Hi, you can have a look at V-Play Engine for Qt-based mobile Apps and Games. The available QML components are already designed to support different screen resolutions and densities of tablets, phones and desktop devices. In addition it is possible to specify device-independent sizes for custom QML items with the usage of e.g. the App::dp() method, or sp() for font sizes. For a short guide about handling different screens and devices with the engine, please see the Resolution and Device Independence Tutorials. Cheers, GT

Found the problem. I was trying to issue the readCharacteristic() command before the discovery process was complete. I still get that warning, though. But I guess it doesn't seem to be a problem.

Thank you so much! I've been searching for this for hours. Wish they would put it in the Qt Notifier example itself!

Thanks. For the offset problem, I think it has to do with High-DPI scaling: http://doc.qt.io/qt-5/highdpi.html But i'm not sure what to do to do it right. Thanks, Alex

Yeah, I figured that since Apple has permitted shared libraries since iOS 8.0 in late 2014 that QT might support their use. Unfortunately for me, after waiting quite a bit for QT to partially compile as a shared library I discovered that this doesn't even work for now. 5.9, as released can't be compiled as a shared library for iOS because of the issues in this report. https://bugreports.qt.io/browse/QTBUG-61489 It looks like this won't officially be working until the release of 5.9.1, which is marked for June, so hopefully we'll see a release in the next week.

@jsulm ok I will raise my query on Raspbian forum.

Hi, I tried to lower the bluez version but unsuccessful in gettin qt bluetooth work for me bluetoothd -v 4.101 According to blog it should have worked. Can you please give a official link from where I can get what is the compatible version of bluez with my qt version

@jsulm I tried using link QBluetoothLocalDevice aa; aa.powerOn(); QList<QBluetoothHostInfo> b; b=aa.allDevices(); b had zero count. i.e QT was unable to detect any device.

@gpreddy-0 AFAIK those are simple key events in the system. So simply log all key events while playing around with the remote in your application.

thx a lot for your help

Thank you @J-Hilk and @raven-worx for your support.

@xtingray said in A proper way to detect if device is either a cellphone or a tablet?: PS: Just out of curiosity, can I mix QML and QWidget code in the same mobile app? Yes, see http://doc.qt.io/qt-5/qquickwidget.html

Yes it is possible. You can try with my fork https://github.com/zevero/rpi-buildqt (just remove -r from qmake ... its not needed) However resulting qtwebengine does not allow for mouse interactions ... tested with 5.8 and 5.9. I got 5.6 up and running with arch (rasp and system) last year, but I have not succeeded with 5.8 or 5.9.