deviceName := "jbl clip 3"

DllCall("LoadLibrary", "str", "Bthprops.cpl", "ptr")
toggle := toggleOn := 1
VarSetCapacity(BLUETOOTH_DEVICE_SEARCH_PARAMS, 24+A_PtrSize*2, 0)
NumPut(24+A_PtrSize*2, BLUETOOTH_DEVICE_SEARCH_PARAMS, 0, "uint")
NumPut(1, BLUETOOTH_DEVICE_SEARCH_PARAMS, 4, "uint")   ; fReturnAuthenticated
VarSetCapacity(BLUETOOTH_DEVICE_INFO, 560, 0)
NumPut(560, BLUETOOTH_DEVICE_INFO, 0, "uint")
loop
{
   If (A_Index = 1)
   {
      foundedDevice := DllCall("Bthprops.cpl\BluetoothFindFirstDevice", "ptr", &BLUETOOTH_DEVICE_SEARCH_PARAMS, "ptr", &BLUETOOTH_DEVICE_INFO)
      if !foundedDevice
      {
         msgbox no bluetooth devices
         return
      }
   }
   else
   {
      if !DllCall("Bthprops.cpl\BluetoothFindNextDevice", "ptr", foundedDevice, "ptr", &BLUETOOTH_DEVICE_INFO)
      {
         msgbox no found
         break
      }
   }
   if (StrGet(&BLUETOOTH_DEVICE_INFO+64) = deviceName)
   {
      VarSetCapacity(Handsfree, 16)
      DllCall("ole32\CLSIDFromString", "wstr", "{0000111e-0000-1000-8000-00805f9b34fb}", "ptr", &Handsfree)   ; https://www.bluetooth.com/specifications/assigned-numbers/service-discovery/
      VarSetCapacity(AudioSink, 16)
      DllCall("ole32\CLSIDFromString", "wstr", "{0000110b-0000-1000-8000-00805f9b34fb}", "ptr", &AudioSink)
      loop
      {
         hr := DllCall("Bthprops.cpl\BluetoothSetServiceState", "ptr", 0, "ptr", &BLUETOOTH_DEVICE_INFO, "ptr", &Handsfree, "int", toggle)   ; voice
         if (hr = 0)
         {
            if (toggle = toggleOn)
               break
            toggle := !toggle
         }
         if (hr = 87)
            toggle := !toggle
      }
      loop
      {
         hr := DllCall("Bthprops.cpl\BluetoothSetServiceState", "ptr", 0, "ptr", &BLUETOOTH_DEVICE_INFO, "ptr", &AudioSink, "int", toggle)   ; music
         if (hr = 0)
         {
            if (toggle = toggleOn)
               break 2
            toggle := !toggle
         }
         if (hr = 87)
            toggle := !toggle
      }
   }
}
DllCall("Bthprops.cpl\BluetoothFindDeviceClose", "ptr", foundedDevice)
msgbox done
ExitApp

deviceName := "jbl clip 3"

DllCall("LoadLibrary", "str", "ws2_32.dll", "ptr")
VarSetCapacity(WSADATA, 394 + (A_PtrSize - 2) + A_PtrSize, 0)
DllCall("ws2_32\WSAStartup", "ushort", 0x0202, "ptr", &WSADATA)
size := 1024
VarSetCapacity(WSAQUERYSETW, size, 0)
NumPut(size, WSAQUERYSETW, 0, "uint")
NumPut(NS_BTH := 16, WSAQUERYSETW, A_PtrSize*5, "uint")
DllCall("ws2_32\WSALookupServiceBeginW", "ptr", &WSAQUERYSETW, "uint", LUP_CONTAINERS := 0x0002, "ptr*", lphLookup)
loop
{
   if (DllCall("ws2_32\WSALookupServiceNextW", "ptr", lphLookup, "uint", 0x0002|0x0010|0x0100, "uint*", size, "ptr", &WSAQUERYSETW) = -1)   ; LUP_CONTAINERS|LUP_RETURN_NAME|LUP_RETURN_ADDR
   {
      error := DllCall("ws2_32\WSAGetLastError")
      if (error = 10110)   ; WSA_E_NO_MORE https://docs.microsoft.com/en-us/windows/win32/winsock/windows-sockets-error-codes-2
         msgbox device not found
      else
         msgbox % error
      exitapp
   }
   if (strget(numget(WSAQUERYSETW, A_PtrSize)) = deviceName)
   {
      socket := DllCall("ws2_32\socket", "int", AF_BTH := 32, "int", SOCK_STREAM := 1, "int", BTHPROTO_RFCOMM := 3)
      VarSetCapacity(SOCKADDR_BTH, 36, 0)
      NumPut(AF_BTH := 32, SOCKADDR_BTH, 0, "ushort")
      DllCall("RtlMoveMemory", "ptr", &SOCKADDR_BTH+2, "ptr", numget(numget(WSAQUERYSETW, A_PtrSize*12)+0, A_PtrSize*2)+2, int, 6)   ; lpcsaBuffer.RemoteAddr.lpSockaddr.BLUETOOTH_ADDRESS_STRUCT
      DllCall("ole32\CLSIDFromString", "wstr", "{00000003-0000-1000-8000-00805F9B34FB}", "ptr", &SOCKADDR_BTH+16)   ; RFCOMM
      loop 10
      {
         DllCall("ws2_32\connect", "int", socket, "ptr", &SOCKADDR_BTH, "int", 36)
         sleep 1500
      }
      DllCall("ws2_32\closesocket", "int", socket)
      DllCall("ws2_32\WSALookupServiceEnd", "ptr", lphLookup)
      break
   }
}
msgbox done
exitapp