#include <windows.h>
#include <ole2.h>
#include <UIAutomation.h>
#include <strsafe.h>
#include <iostream>

IUIAutomation *_automation;

int main()
{
    HRESULT hr = CoInitialize(NULL);
    if (FAILED(hr))
    {
        wprintf(L"CoInitialize failed, HR:0x%08xn", hr);
    }
    else
    {
        hr = CoCreateInstance(__uuidof(CUIAutomation8), NULL,
            CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&_automation));
        if (FAILED(hr))
        {
            wprintf(L"Failed to create a CUIAutomation8, HR: 0x%08xn", hr);
        }
        else
        {
            IUIAutomationElement *element = NULL;
            HWND wHandle = FindWindow(0, LPCTSTR((LPARAM)TEXT("3rd party window name")));
            HRESULT hr = _automation->ElementFromHandle(wHandle, &element);
            if (SUCCEEDED(hr) && element != NULL)
            {
                ListDescendants(element, 0);
                element->Release();
            }
            _automation->Release();
        }
    }
    CoUninitialize();
}