Quote Originally Posted by kompotFX View Post
the BluetoothAPIs.h has nothing to do with files wich comes with mingw,
If it includes some standard header for which MinGW provides its own version then files that come with MinGW have lots to do with that.

Unfortunatelly Qt library has no support for bluetooth functionality neither.
Actually as far as I know it does in QtMobility 1.1. But I might be wrong or it might not support the functionality you need.

Do you personaly have any experience with including Microsoft Platform SDK\Include headers to qt project and building it with mingw?
I personally have experience that MinGW has its own runtime which is incompatible with the runtime for MSVC and some files that replace the ones for MSVC which is what Microsoft provides. I don't know if your issue is related to that, I only say it might be. What you can try is to build your test application with bare MinGW (without using Qt Creator, Qt or qmake) but this requires some knowledge about building applications from the command line which is uncommon for people used to doing everything with a button click in Visual Studio. If you have such knowledge then it might be the time to use it.