QML Bluetooth Example Problem

[ideadesigner]

Hello Everyone,

I'm a new developer on QT and I'm a student.
I want to create mobile applications but firstly trying to run "QML Bluetooth Scanner" example on desktop.
But, when I want to run this example,
QT Console says: "Dummy backend running. Qt Bluetooth module is non-functional"
and bluetooth scanner doesn't work. My bluetooth adapter is working smoothly.
How can I solve this problem ?

Platform: Windows 7 Pro
Qt Version: 5.7

[SGaist]

Hi and welcome to devnet,

There's a WIP branch for Desktop Windows support in the QtConnectivity module that you can build and try.

[ideadesigner]

@SGaist
Which branch did you refer?
This link right or wrong?
And how can I integrate this branch to my qt creator ?

[SGaist]

Yes, that's the one

1. Clone the module
2. Checkout the branch
3. Build it (you can open the project within Qt Creator)
4. Install it

And you should be good to go.

[ideadesigner]

@SGaist
How can i clone or branch off the repo. Because there is no button on this page.

[kshegunov]

@ideadesigner

How can i clone or branch off the repo. Because there is no button on this page.

This should cover it.

[SGaist]

The links are on the summary page. Otherwise that's basic git

git clone https://code.qt.io/qt/qtconnectivity.git
cd qtconnectivity
git checkout wip/win

[ideadesigner]

@kshegunov
I took git setup and installed.
@SGaist
I tried but gave me permission error:

$ git clone http://code.qt.io/cgit/qt/qtconnectivity.git/tree/
fatal: could not create work tree dir 'tree': Permission denied

Thanks for your helping guys.

[SGaist]

Retry by copying the git command I wrote.

[ideadesigner]

@SGaist Same answer from Git with your URL

[kuzulis]

git clone git://code.qt.io/qt/qtconnectivity.git

[SGaist]

Because you added tree again at the end ? Don't do it, just clone the git repository.

[ideadesigner]

@kuzulis I tried your URL in different computer and no problem.
@SGaist No, I didn't add the 'tree'. I think the problem is 'https://' because 'git://' is worked.

[SGaist]

Strange… Anyway, the essential part is that you got the module and can continue to hack :)

[kshegunov]

@ideadesigner @SGaist

I may be absolutely wrong and please correct me if I am, but I think https requires (gerrit) authentication to work ...

[kuzulis]

requires (gerrit) authentication to work

yes

[ideadesigner]

I can't understand, at my pc, 'git bash' gave me same error with 'git://...'.

$ git clone git://code.qt.io/qt/qtconnectivity.git
fatal: could not create work tree dir 'qtconnectivity': Permission denied

[SGaist]

Permission denied ? Do you have write permission in the folder you're trying to clone in ?

[ideadesigner]

@SGaist I see. I understood my fault.
I worked respectively in pictures,
1.Wrong folder

2.Changed my folder

3.Changed my branch

4.Opened the qt project file and ran the btscanner example

5.Still same answer

[kuzulis]

Still same answer

You should re-build && re-install QtConnectivity from the wip/win branch: make && make install, and only then try to use examples.

PS: A good idea it is cleanup all existing QtBluetooth stuff from your Qt-installed directory, before making-installing of wip/win branch.