main.cpp

#include <QCoreApplication>
#include <QDebug>
#include "UIAutomation.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    IUIAutomation *uiauto;
    CoInitialize(NULL);
    HRESULT hr = CoCreateInstance(__uuidof(CUIAutomation), NULL, CLSCTX_INPROC_SERVER, __uuidof(IUIAutomation),(void**)&uiauto);

    HWND topWindow = GetForegroundWindow();

    if(topWindow == NULL)
        return 0;

    IUIAutomationElement *windElem;
    hr = uiauto->ElementFromHandle(topWindow, &windElem);
    if(FAILED(hr))
    {
        qDebug() << "Can’t access the Window in focus!";
        return 0;
    }

    BSTR bWinName;
    hr = windElem->get_CurrentName(&bWinName);
    if(FAILED(hr))
        return 0;

    QString windowName = QString::fromStdWString(std::wstring(bWinName, SysStringLen(bWinName)));
    SysFreeString(bWinName);

    qDebug() << windowName;
    if(uiauto != NULL)
        uiauto->Release();

    CoUninitialize();

    return a.exec();
}