Получить HWND активного дочернего окна - C++ WinAPI - Ответ 1816043

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
 
 
 
 
namespace WindowsFormsApplication1
{
 
    public partial class Form1 : Form
    {
        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern IntPtr GetFocus();
 
        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern bool SetWindowTextW(IntPtr hwnd, String lpString);
        public Form1()
        {
            InitializeComponent();
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
 
        }
 
        private void Form1_Click(object sender, EventArgs e)
        {
            IntPtr hWnd = GetFocus();
            string str = "weeee";
            SetWindowTextW(hWnd, str);
        }
    }
}