Question

C#中已经获取了父窗口句柄如何枚举到子窗口的句柄。

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);

在网上找到这些之后就不知道怎么写了，真心的求C#的Demo 麻烦大神多给些注释 特别是参数。。。鸟语不好。只知道用EnumChildWindows 求个示范。。。。

Answer 1

  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;
        }
 
        private bool EnumWindowsMethod(int hWnd, int lParam)
        {
            IntPtr lpString = Marshal.AllocHGlobal(200);
            GetWindowText(hWnd, lpString, 200);
            var text = Marshal.PtrToStringAnsi(lpString);
            if (!string.IsNullOrWhiteSpace(text))
                list.Add(text);
            return true;
        }

追问

谢谢啊，我先试试，有问题再追问你哈。