2,791 questions
Check the deleted article too:
I can't connect to a Bluetooth LE Device using c++ Win32 API
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nzr
20
Reputation points
I can't connect to a Bluetooth LE Device using c++ Win32 API - Visual Studio 2019 (v142). A few years ago there was a working Example at MSDN, but today the code doesn't work anymore. https://gist.github.com/programmarchy/c9d02e22d58bfab3f8bb seems to be the new source, but same Problem. BluetoothGATTGetDescriptorValue always returns ERROR_INVALID_FUNCTION. BluetoothGATTGetDescriptors or BluetoothGATTGetServices are working as expected. Fullowing link has sadly been deleted: https://social.msdn.microsoft.com/Forums/en-US/bad452cb-4fc2-4a86-9b60-070b43577cc9/is-there-a-simple-example-desktop-programming-c-for-bluetooth-low-energy-devices?forum=wdk
Windows development | Windows API - Win32
Developer technologies | C++
3,978 questions
{count} votes
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(179.20000000000002, 34%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EXY%3C/text%3E%3C/svg%3E)
Xiaopo Yang - MSFT 12,731 Reputation points Microsoft External Staff2024-02-28T03:00:12.8766667+00:00 Hello @nzr, If the issue has a big impact to you and you are seeking any workaround, you can open an incident at https://developer.microsoft.com/en-us/windows/support/?tabs=Contact-us so that our engineer can work with you closely and please choose the 'Networking Development - Bluetooth API' for Windows SDK for this issue. In-addition, if the support engineer determines that the issue is the result of a bug the service request will be a no-charge case and you won't be charged.
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nzr 20 Reputation points
2024-02-29T12:21:48.32+00:00 Hi, thank you for the link, it helped. Problem was a wrong device handle. Its a little bit confusing, thall some BluetoothGatt... functions are working with a device handle, and others like BluetoothGATTGetDescriptorValue work only with a service handle. Maybe a return value ERROR_INVALID_HANDLE instead of ERROR_INVALID_FUNCTION could help.
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Xiaopo Yang - MSFT 12,731 Reputation points Microsoft External Staff
2024-03-01T03:14:23.75+00:00 Looks Viorel 's link solves your problem. Could you please mark answer for completion?
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