Could be due to missing OpenSSL. Try debugging the app to see if you get ssl related errors. More about Android and OpenSSL here: https://doc.qt.io/qt-5/android-openssl-support.html

Alright, with much time and an extensive amout of google search I managed to cobble a working QOpenGLWidget program together. I used this official Qt-Example as a basline: http://doc.qt.io/qt-5/qtopengl-cube-example.html here is the combination with my Tesseract code https://github.com/DeiVadder/Tesseract-Challenge-OpenGL It's working, yeah me!!, but I have the feeling that it's far from ideal. I'm just glad I managed to draw something in 3d. Anyway, closed and solved.

Hi and welcome to devnet, That's a question you should bring to the interest mailing list. You'll find there Qt's developers/maintainers. This forum is more user oriented.

Hi and welcome to devnet, Don't copy these DLLs, unless it has changed over time, Qt Creator is build with MSVC and you have a MinGW Qt build. You should rather get the official OpenSSL package and install that one to use with your application.

I know this question is old, but it seems noone is answering BLE related questions here. (I've just posted such a question myself, and fear noone will anwer it either). I developed an app based on the same example, and it worked fine under both android 4.3.2, 5.1.2, and 6.0. However, the customer came with an android 5.01, and sure enough, the app did not work as expected. It seemed to "hang" and tried to connect to two devices at the same time, etc. We did not investigate it further. This was with Qt 5.6, so the issue is not resolved, and may never be, since with newer versions of Android it is working fine.

Hi and welcome to devnet, To get a grasp about just follow the tutorials linked in the QtWidgets module introduction. You can then take a look at QProcess for calling external programs. Hope it helps PS: It's Qt, QT stands for Apple QuickTime that you might also be using.

Yep It's not supported on Windows. Easiest is to use Ubuntu. You should be able to install it in for example VirtualBox and share the USB device there.

@Pheelbert Yes missed the mentioning of data() here. You're Welcome :-) Happy Coding.