public static ScreenRect GetWindowTaskbarButtonRect(string windowName, IntPtr taskbarShellTry /* HWND shall try target*/)
        {
            IntPtr hWndMSTaskListWClass = ScanChildrenForWindow(taskbarShellTry, className: "MSTaskListWClass");

            if (hWndMSTaskListWClass == IntPtr.Zero) return ScreenRect.Zero;

            IUIAutomation pUIAutomation = new CUIAutomation();

            IUIAutomationElement windowElement = pUIAutomation.ElementFromHandle(hWndMSTaskListWClass);
            if (windowElement != null)
            {
                IUIAutomationCondition condition = pUIAutomation.CreateTrueCondition();
                IUIAutomationElementArray elementArray = windowElement.FindAll(TreeScope.TreeScope_Descendants | TreeScope.TreeScope_Children, condition);
                if (elementArray != null)
                {
                    //find matching elements by process
                    List<IUIAutomationElement> elementsPerProc = new();
                    string currentExe = System.AppDomain.CurrentDomain.FriendlyName;
                    int nNbItems = elementArray.Length;
                    for (int nItem = 0; nItem <= nNbItems - 1; nItem++)
                    {
                        IUIAutomationElement element = elementArray.GetElement(nItem);
                        string sName = element.CurrentName;
                        if (sName.Contains("running window"))
                        {
                            if (element.CurrentAutomationId.Contains(currentExe))
                            {
                                elementsPerProc.Add(element);
                            }
                        }
                    }
                    //try find matching element by window title
                    if (elementsPerProc.Count >= 1)
                    {
                        tagRECT rect = elementsPerProc[0].CurrentBoundingRectangle;
                        ScreenRect result = new(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
                        foreach (IUIAutomationElement el in elementsPerProc)
                        {
                            if (el.CurrentName.Contains(windowName))
                            {
                                IntPtr hwnd = el.CurrentNativeWindowHandle;
                                tagRECT rect2 = el.CurrentBoundingRectangle;
                                result = new ScreenRect(rect2.left, rect2.top, rect2.right - rect2.left, rect2.bottom - rect2.top);
                                break;
                            }
                        }
                        return result;
                    }
                }
            }
            return ScreenRect.Zero;
        }