NwndRaySample.cs

...
var ray = new Ray();
ray.origin = gripTransform.position;
ray.direction = gripTransform.forward;
RaycastHit hit;
if (Physics.Raycast(ray, out hit, maxRayDistance, layerMask)) 
{
    var rb = targetHit_.rigidbody;
    var uwcWinObj = 
        rb.GetComponent<uWindowCapture.UwcWindowObject>() ??
        rb.GetComponentInChildren<uWindowCapture.UwcWindowObject>();
    if (uwcWinObj)
    {
        var window = uwcWinObj.window;
        var localPos = uwcWinObj.transform.InverseTransformPoint(targetHit_.point);
        var windowLocalX = (int)((localPos.x + 0.5f) * window.width);
        var windowLocalY = (int)((0.5f - localPos.y) * window.height);
        var desktopX = window.x + windowLocalX;
        var desktopY = window.y + windowLocalY;
        var coord = new Vector2(desktopX, desktopY);
        
        NwndWin32API.SetForegroundWindow(window.handle);
        NwndWin32API.SetFocus(window.handle);
        touchDispatcher.Touch(coord);
    }
}
...