Avoid DLL pre-loading vulnerability by reloading DLL, any better way?

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C++

Win32

To avoid dll pre-loading I tried to use SetDllDirectory("") as it is mentioned in MSDN to remove current directory from search path.

The directory to be added to the search path. If this parameter is an empty string (""), the call removes the current directory from the default DLL search order. If this parameter is NULL, the function restores the default search order.
Surprisingly it didn't work. I can see dlls are still getting loaded from current directory if dll present there. I also tired to set dll directory path as system 32 path, but still it picks dll from current directory. Lastly I decide to get all the modules loaded in my application and reloading them again. My code looks like this,

if(wcsstr(szModName,L"TestLibrary.dll"))
{
   FreeLibrary(hMods[i]);
   LoadLibrary("SomeRelavantPath\TestLibrary.dll");
}

Do you see any problem with my code?

What I have tried:

My Complete POC code,

int main( void )
{
    SetDllDirectory(L"");
    LPWSTR s = new WCHAR[100];
    GetDllDirectory(100,s);
    HINSTANCE myDLL = LoadLibrary(L"TestLibrary.dll");
    //myDLL returns non-null, there is file in current dir and not at any other location, it should have return null.
    return 0;
}