Is there any Windows APIs supporting to connect to a paired BT devices. If not, does the Bluetooth Windows Socket programming support this function? Thanks.

According to Bluetooth and connect , Bluetooth uses the connect function to connect to a target Bluetooth device, using a previously created Bluetooth socket. Try Bluetooth app to device sample . But you cannot let Windows connect like Windows Settings do because Windows uses internal APIs to work with Windows components.

Window APIs support connecting to paired BT devices

Accepted answer

Xiaopo Yang - MSFT 12,231 Reputation points Microsoft Vendor

2023-04-11T05:18:52.31+00:00

According to Bluetooth and connect,

Bluetooth uses the connect function to connect to a target Bluetooth device, using a previously created Bluetooth socket.

Try Bluetooth app to device sample. But you cannot let Windows connect like Windows Settings do because Windows uses internal APIs to work with Windows components.
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Damon Pan 86 Reputation points

2023-04-11T11:35:43.38+00:00

Thank you very much Xiaopo, let me try and feedback to you. I check the API used in this app, it's for Windows 8 only. Is there any sample for Windows 10 and Windows 11?

Xiaopo Yang - MSFT 12,231 Reputation points Microsoft Vendor

2023-04-12T01:27:59.4333333+00:00

These APIs apply to WinRT Build version 10240 and later. Is it for Windows 8 only?

Damon Pan 86 Reputation points

2023-04-12T03:12:53.28+00:00

I want to build such UWP/Win32 app on Windows 10 and windows 11. And my requirement is to connect a paired BT earbuds. There is not socket client/server on earbuds, so how to use windows socket api from PC to connect BT earbuds?

Xiaopo Yang - MSFT 12,231 Reputation points Microsoft Vendor

2023-04-12T03:18:41.3+00:00

The sample applies to Windows 8 and later. Get the paired BT earbuds Bluetooth address and Use socket to connect from your application like the Bluetooth app to device sample does. But you may not let Windows connect because Windows may use internal APIs to work with Windows components.

Damon Pan 86 Reputation points

2023-04-12T07:13:13.5133333+00:00

Hi Xiaopo,
this sample works on my PC https://github.com/microsoft/Windows-classic-samples/blob/27ffb0811ca761741502feaefdb591aebf592193/Samples/WinsockBluetoothConnection/cpp/bthcxn.cpp But the connect cost ~7s, it's long time.

Xiaopo Yang - MSFT 12,231 Reputation points Microsoft Vendor

2023-04-12T07:27:13.8566667+00:00

You can debug the sample to troubleshoot but there could be no problem for the connecting time because of WSALookupServiceBegin.
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Window APIs support connecting to paired BT devices

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