int main(int argc, char** argv)
{
	...
    hr = TA_IsGenuineEx(taHandle, &opts);
    if (hr == TA_OK || hr == TA_E_FEATURES_CHANGED || hr == TA_E_INET || hr == TA_E_INET_DELAYED)
    {
        printf("YourApp is activated and genuine! Enable any app features now.\n");
    }
    else // not activated or genuine
    {
        if (TA_IsActivated(taHandle) == TA_OK)
        {
            // There is still activation data on the computer, and it's valid.
        }
        else
        {
            // The customer was never activated or deactivated (or got deactivated).
        }
        hr = TA_CheckAndSavePKey(taHandle, _T("U9MM-4NJ5-QFG8-TWM5-QM75-92YI-NETA"), TA_SYSTEM);
        if (hr == TA_OK)
        {
            printf("Product key saved successfully.\n");

            // try to activate
            hr = TA_Activate(taHandle, NULL);

            if (hr == TA_OK)
                printf("Activated successfully\n");
            else
                printf("Activation failed: hr = 0x%x\n", hr);
        }
        else
            printf("Product key failed to save: hr = 0x%x\n", hr);
    }

    printf("Hello world.\n");
    return 0;
}