Hello Andrew

With your information, i was able to fix the problem. I used the bb_api as a guide, so assumed the device id had to be a reference, which was the problem.

Bad:

[DllImport(“tg_api.dll”, CallingConvention = CallingConvention.Cdecl)]
public static extern tgStatus tgOpenDevice(ref int device);

Good:

[DllImport(“tg_api.dll”, CallingConvention = CallingConvention.Cdecl)]
public static extern tgStatus tgOpenDevice(int device);

Thank you very much
Nazar

[Author]

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