dialog c++

// opens idlaog

std::wstring openFileDialog() {
    std::wstring selectedFilePath;

    // Initialize COM library
    HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
    if (FAILED(hr)) {
        return selectedFilePath; // Return empty string if COM initialization fails
    }

    // Initialize COM object
    IFileOpenDialog* pFileOpen;
    hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL, IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));
    if (FAILED(hr)) {
        CoUninitialize(); // Uninitialize COM before returning
        return selectedFilePath; // Return empty string if object creation fails
    }

    // Configure dialog to allow multiple file selection
    DWORD dwOptions;
    hr = pFileOpen->GetOptions(&dwOptions);
    if (SUCCEEDED(hr)) {
        hr = pFileOpen->SetOptions(dwOptions | FOS_ALLOWMULTISELECT);
    }

    // Show the file dialog
    hr = pFileOpen->Show(NULL);
    if (SUCCEEDED(hr)) {
        // Get the selected files
        IShellItemArray* pItems;
        hr = pFileOpen->GetResults(&pItems);
        if (SUCCEEDED(hr)) {
            DWORD dwNumItems;
            hr = pItems->GetCount(&dwNumItems);
            if (SUCCEEDED(hr)) {
                for (DWORD i = 0; i < dwNumItems; ++i) {
                    IShellItem* pItem;
                    hr = pItems->GetItemAt(i, &pItem);
                    if (SUCCEEDED(hr)) {
                        PWSTR pszFilePath;
                        hr = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
                        if (SUCCEEDED(hr)) {
                            // Use pszFilePath as the selected file path
                            selectedFilePath = pszFilePath;
                            CoTaskMemFree(pszFilePath);
                        }
                        pItem->Release();
                    }
                }
            }
            pItems->Release();
        }
    }

    pFileOpen->Release();

    // Unload COM
    CoUninitialize();

    return selectedFilePath;
}