Свернуть дочерние окна сторонней программы

IntPtr wdwIntPtr = FindWindow(null, "jambo");      
Windowplacement placement = new Windowplacement();
GetWindowPlacement(wdwIntPtr, ref placement);
ShowWindow(wdwIntPtr, ShowWindowEnum.Hide);

 private const uint WM_GETTEXT = 0x000D;
 
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam,
            StringBuilder lParam);
 
 
        delegate bool EnumThreadDelegate(IntPtr hWnd, IntPtr lParam);
 
        [DllImport("user32.dll")]
        static extern bool EnumThreadWindows(int dwThreadId, EnumThreadDelegate lpfn,
            IntPtr lParam);
 
        static IEnumerable<IntPtr> EnumerateProcessWindowHandles(int processId)
        {
            var handles = new List<IntPtr>();
 
            foreach (ProcessThread thread in Process.GetProcessById(processId).Threads)
                EnumThreadWindows(thread.Id,
                    (hWnd, lParam) => { handles.Add(hWnd); return true; }, IntPtr.Zero);
 
            return handles;
        }
 
 
 [STAThread]
        static void Main(string[] args)
        {
            foreach (var handle in EnumerateProcessWindowHandles(
       Process.GetProcessesByName("TeamViewer").First().Id))
            {
                StringBuilder message = new StringBuilder(1000);
                SendMessage(handle, WM_GETTEXT, message.Capacity, message);
                Console.WriteLine(message);
                
            }
 
            Console.ReadLine();
 
        }

ShowWindow(wdwIntPtr, ShowWindowEnum.Hide);

     foreach (var handle in EnumerateProcessWindowHandles(
       Process.GetProcessesByName("TeamViewer").First().Id))
            {
                StringBuilder message = new StringBuilder(1000);
                SendMessage(handle, WM_GETTEXT, message.Capacity, message);
 
              ShowWindow(handle, ShowWindowEnum.Hide);  //сворачивам окна
               
            }

  SendMessage(handle, WM_CLOSE, 0, null);

IntPtr wdwIntPtr = FindWindow("#32770 (Dialog)", null);
SendMessage(wdwIntPtr , WM_CLOSE, 0, null);

IntPtr wdwIntPtr = FindWindow(null, "TeamViewer");
IntPtr childWindow = FindWindowEx(wdwIntPtr, new IntPtr(0), "ComboBox", null);
SendMessage(childWindow, WM_CLOSE, 0, null);