void EmbedCalc(HWND hWnd)
{
    HWND calcHwnd = FindWindow(L"CalcFrame",NULL);
    if(calcHwnd != NULL)
    {
        // Change the parent so the calc window belongs to our apps main window 
        SetParent(calcHwnd,hWnd);

        // Update the style so the calc window is embedded in our main window
        SetWindowLong(calcHwnd,GWL_STYLE,GetWindowLong(calcHwnd,GWL_STYLE) | WS_CHILD);

        // We need to update the position as well since changing the parent does not
        // adjust it automatically.
        SetWindowPos(calcHwnd,NULL,SWP_NOSIZE | SWP_NOZORDER);
    }
}