[DllImport("user32.dll", CharSet = CharSet.Auto)]

        private static extern int GetWindowText(HandleRef hWnd, StringBuilder lpString, int nMaxCount);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]

        private static extern int GetWindowTextLength(HandleRef hWnd);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]

        private static extern bool EnumWindows(EnumThreadWindowsCallback callback, IntPtr extraData);

        [DllImport("user32.dll", ExactSpelling = true)]

        private static extern bool EnumChildWindows(HandleRef hwndParent, EnumChildrenCallback lpEnumFunc, HandleRef lParam);

        private delegate bool EnumThreadWindowsCallback(IntPtr hWnd, IntPtr lParam);

        private delegate bool EnumChildrenCallback(IntPtr hwnd, IntPtr lParam, TreeNode parentNode);



        private bool EnumWindowsCallback(IntPtr handle, IntPtr extraParameter)

        {

            int num1 = GetWindowTextLength(new HandleRef(this, handle)) * 2;

            StringBuilder builder1 = new StringBuilder(num1);

            GetWindowText(new HandleRef(this, handle), builder1, builder1.Capacity);

            Application.DoEvents();

            listBox1.Items.Add(string.Format("父:{0} Title: {1}", handle, builder1.ToString()));

            TreeNode RootNode = new TreeNode(builder1.ToString());

            this.treeView1.Nodes.Add(RootNode );



            EnumChildWindows(new HandleRef(this, handle), new EnumChildrenCallback(EnumChildWindowsCallback), new HandleRef(null, IntPtr.Zero));