c# 列举所有窗口和子窗口

private delegate bool WNDENUMPROC(IntPtr hWnd, int lParam);



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

        private static extern bool EnumChildWindows(IntPtr hwndParent, WNDENUMPROC lpEnumFunc, int lParam); 



        [DllImport("user32.dll")]

        private static extern bool EnumWindows(WNDENUMPROC lpEnumFunc, int lParam);

        //[DllImport("user32.dll")] 

        //private static extern IntPtr FindWindowW(string lpClassName, string lpWindowName); 

        [DllImport("user32.dll")]

        private static extern int GetWindowTextW(IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)]StringBuilder lpString, int nMaxCount);

        [DllImport("user32.dll")]

        private static extern int GetClassNameW(IntPtr hWnd, [MarshalAs(UnmanagedType.LPWStr)]StringBuilder lpString, int nMaxCount);

        public struct WindowInfo

        {

            public IntPtr hWnd;

            public string szWindowName;

            public string szClassName;

        }









        private List<WindowInfo> EnumChildWindowsCallback(IntPtr handle, string name, string classname)

        {

            List<WindowInfo> wndList = new List<WindowInfo>();

            EnumChildWindows(handle,delegate(IntPtr hWnd, int lParam)

            {

                WindowInfo wnd = new WindowInfo();

                StringBuilder sb = new StringBuilder(256);

                //get hwnd 

                wnd.hWnd = hWnd;

                //get window name 

                GetWindowTextW(hWnd, sb, sb.Capacity);

                wnd.szWindowName = sb.ToString();

                //get window class 

                GetClassNameW(hWnd, sb, sb.Capacity);

                wnd.szClassName = sb.ToString();

                //add it into list 

                wndList.Add(wnd);

                return true;

            },0);

            return wndList.Where(it => it.szWindowName == name && it.szClassName == classname).ToList();

        } 



        public List<WindowInfo> GetAllDesktopWindows(string name,string classname)

        {

            List<WindowInfo> wndList = new List<WindowInfo>();



            //enum all desktop windows 

            EnumWindows(delegate(IntPtr hWnd, int lParam)

            {

                WindowInfo wnd = new WindowInfo();

                StringBuilder sb = new StringBuilder(256);

                //get hwnd 

                wnd.hWnd = hWnd;

                //get window name 

                GetWindowTextW(hWnd, sb, sb.Capacity);

                wnd.szWindowName = sb.ToString();

                //get window class 

                GetClassNameW(hWnd, sb, sb.Capacity);

                wnd.szClassName = sb.ToString();

                //add it into list 

                wndList.Add(wnd);

                return true;

            }, 0);



            return wndList.Where(it => it.szWindowName == name && it.szClassName ==classname ).ToList();

        }