[Interest] Bluetooth library and old windows versions

[maitai]

Hi Oliver, thanks for your reply

This message is from Qt or from Windows? Because if it is from Qt then 
maybe it is worth adding a "compatibility-check" method and let the 
developer decide if it is fatal or not?

Otherwise I will go with yet another build and install option I think. 
The plugin method will probably display the message each time the app is 
launched and that is annoying.

Philippe


Le 23-08-2018 15:00, Oliver Wolff a écrit :
> Hi,
> 
> 
> On 23/08/2018 13:30, maitai wrote:
>> Hello,
>> 
>> I have a problem with users equipped with an old version of Windows 
>> (8, or 7). The latest version of my app (Qt 5.11.1/MSVC 2017 based) 
>> required QtBluetooth but when users load the app they get a message 
>> saying:
>> 
>> "This Windows version does not support the required Bluetooth API. 
>> Consider updating to a more recent Windows (10.0.10586 or above)"
>> 
>> Then they press OK and the app shuts down.
>> 
>> I understand the message and have no problem removing BT 
>> functionalities for these users with old Windows versions, but my 
>> question is: can I avoid to build several binaries, i.e. is there a 
>> way not to load QtBluetooth if windows version is not recent enough ? 
>> Any other suggestion ?
> The message is shown when the dll is loaded, so unfortunately I only
> see two other ways of working around the problem.
> 1) You could try to dlopen the library and lazy load all the
> functionality you need. That would mean, that you have to resolve
> every function though...
> 2) You could put your Bluetooth code into a plugin. If that fails to
> load, the application will not exit immediately, but only the plugin
> loading will fail then.
>> 
>> Thanks
>> Philippe.
>> 
>> 
> BR,
> Olli
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