LoadLibrary("bthprops.dll") fails, file not found - winapi

Question

The Microsoft documentation for Bluetooth APIs such as BluetoothGetDeviceInfo provide instructions for calling these functions using either static or dynamic imports.
The static import, linking with bthprops.lib, works fine.
#include <windows.h>
#include <BluetoothAPIs.h>
#include <iostream>
int main(int argc, char** argv)
{
BLUETOOTH_DEVICE_INFO binfo = {};
binfo.dwSize = sizeof binfo;
binfo.Address.ullLong = 0xBAADDEADF00Dull;
auto result = ::BluetoothGetDeviceInfo(nullptr, &binfo);
std::wcout << L"BluetoothGetDeviceInfo returned " << result
<< L"\nand the name is \"" << binfo.szName << "\"\n";
return 0;
}
But this isn't ideal in ultra-portable code, because the documentation says they are not supported prior to Windows XP SP2. So one should use dynamic linking and recover from missing functions. However, dynamic loading bthprops.dll as instructed by the MSDN docs fails:
decltype(::BluetoothGetDeviceInfo)* pfnBluetoothGetDeviceInfo;
bool LoadBthprops( void )
{
auto dll = ::LoadLibraryW(L"bthprops.dll");
if (!dll) return false;
pfnBluetoothGetDeviceInfo = reinterpret_cast<decltype(pfnBluetoothGetDeviceInfo)>(::GetProcAddress(dll, "BluetoothGetDeviceInfo"));
return pfnBluetoothGetDeviceInfo != nullptr;
}
How should one dynamically link to these functions?

Answer 1

Apparently this fact is pretty well known to Google but not to MSDN. If you want to dynamically load these functions, use LoadLibrary("bthprops.cpl") which is the correct DLL name, contrary to the nice table in the function documentation.
This works:
decltype(::BluetoothGetDeviceInfo)* pfnBluetoothGetDeviceInfo;
bool LoadBthprops( void )
{
auto dll = ::LoadLibraryW(L"bthprops.cpl");
if (!dll) return false;
pfnBluetoothGetDeviceInfo = reinterpret_cast<decltype(pfnBluetoothGetDeviceInfo)>(::GetProcAddress(dll, "BluetoothGetDeviceInfo"));
return pfnBluetoothGetDeviceInfo != nullptr;
}