The only current language supported by QMSI is the one included in ISSM. We assure you that we work to make our products more accessible and compatible with devices that are already on the market. Hopefully languages such as C++ are added to QMSI in the future, nevertheless, the only one that is available right now is C.
Thats a real pity as is it means that a whole bunch of code is having to be re-invented.
There's not really any migration path from Arduino to D2000 on both hardware and software levels.
While the form factor may be similar, the 3.3V level, 5V intolerance and lack of ICSP means that few, if any, Arduino shields can be used.
It really begs the question - why bother?