C# Winform 已知窗体句柄，如何遍历出所有控件句柄

c# windform 已知窗体句柄，如何遍历出所有控件句柄

        public delegate bool CallBack(int hwnd, int lParam);
        public delegate bool EnumWindowsProc(int hWnd, int lParam); 
        List<string> list = new List<string>();

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool EnumChildWindows(IntPtr hwndParent, EnumWindowsProc lpEnumFunc, IntPtr lParam);
 
        [DllImport("user32.dll")]
        public static extern int GetWindowText(int hWnd, IntPtr lpString, int nMaxCount);
 
        private void toolStripButton5_Click(object sender, EventArgs e)
        {
            list.Clear();
            EnumChildWindows(this.Handle, this.EnumWindowsMethod, IntPtr.Zero);
            //这里得到了所有的子窗口list.Count;
                        //this.Handle改成你已得到的窗体句柄
        }
 
        private bool EnumWindowsMethod(int hWnd, int lParam)
        {
            IntPtr lpString = Marshal.AllocHGlobal(200);
            GetWindowText(hWnd, lpString, 200);//这里获得控件text
            var text = Marshal.PtrToStringAnsi(lpString);
            if (!string.IsNullOrWhiteSpace(text))
                list.Add(text);//添加到list，如果要获得句柄就新建list添加hWnd
            return true;
        }
 

//public delegate bool CallBack(int hwnd, int lParam);
//public delegate bool EnumWindowsProc(int hWnd, int lParam);
//[DllImport("User32.dll", EntryPoint = "FindWindow", SetLastError = false)]
//public static extern int FindWindow(string lpClassName, string lpWindowName);

//[DllImport("user32.dll")]
//[return: MarshalAs(UnmanagedType.Bool)]
//public static extern bool Enumchildwindows(IntPtr hwndParent, EnumWindowsProc lpEnumFunc, IntPtr lParam);
//[DllImport("user32.dll")]
//public static extern int GetWindowText(int hWnd, StringBuilder lpString, int nMaxCount);
//[DllImport("user32.dll")]
//public static extern int EnumThreadWindows(int dwThreadId, CallBack lpfn, int lParam);
//[DllImport("user32.dll")]
//public static extern int EnumWindows(CallBack lpfn, int lParam);
//[DllImport("user32.dll")]
//public static extern int EnumChildWindows(int hWndParent, CallBack lpfn, int lParam);

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