Aide sur EnumWindows + FindWindow

    class ClassEW
    {
        private IntPtr _hwdn;
        private string _name;
        private static List<ClassEW> _windows = new List<ClassEW>();

        public IntPtr HWND { get { return this._hwdn; } }
        public string Name { get { return this._name; } }

        public ClassEW(IntPtr hwnd, string name)
        {
            this._hwdn = hwnd;
            this._name = name;
        }

        public override string ToString()
        {
            return this._name;
        }
   
        private static bool EnumWindows(IntPtr hwnd, int lparam)
        {
            if (!string.IsNullOrEmpty(NativeMethods.GetWindowText()))
            {
                ClassEW window = new ClassEW(hwnd, NativeMethods.GetWindowText(hwnd));
                _windows.Add(window);
            }
            return true;
        }

        public static List<ClassEW> GetWindowsList()
        {
            NativeMethods.EnumWindows(new NativeMethods.EnumWindowsCallBack(EnumWindows), 0);
            return _windows;
        }

        internal static class NativeMethods
        {
            public delegate bool EnumWindowsCallBack(IntPtr hwnd, int lParam);

            [DllImport("user32.dll")]
            internal static extern int EnumWindows(EnumWindowsCallBack lpEnumFunc, int lParam);

            [DllImport("user32.dll")]
            [return: MarshalAs(UnmanagedType.Bool)]
            private static extern bool IsWindowVisible(IntPtr hWnd);

            [DllImport("user32.dll")]
            private static extern int GetWindowText(IntPtr hWnd, [Out] StringBuilder lpString, int nMaxCount);

            [DllImport("user32.dll")]
            private static extern int GetWindowTextLength(IntPtr hWnd);

            [DllImport("user32.dll", SetLastError = true)]
            internal static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

            internal static string GetWindowText((IntPtr hWnd)
            {
                StringBuilder sb = new StringBuilder(GetWindowTextLength(hWnd)+ 1);
                GetWindowText(hWnd, sb, sb.Capacity);
                return sb.ToString();
            }
        }
    }

            foreach (ClassEW A in ClassEW.GetWindowsList())
            {
                ListViewItem LVI = ListView.Items.Add(A.HWND.ToString());
                LVI.SubItems.Add(A.Name);
            }