c#获取notepad.exe内容

Sam.777

获取notepad.exe的内容

[C#] 纯文本查看 复制代码

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Runtime.InteropServices;

namespace ConsoleApp5
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(GetAll());
        }

        [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);


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


        [DllImport("user32.dll", SetLastError = true)]
        public static extern int SendMessage(IntPtr hWnd, int msg, int Param, StringBuilder text);


        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);


        public static string GetAll(string aa = null)
        {
            List<string> list = new List<string>();
            IntPtr intPtr = FindWindow("notepad", null);
            MemoryStream memoryStream = new MemoryStream();
            BinaryWriter binaryWriter = new BinaryWriter(memoryStream);
            while (intPtr != IntPtr.Zero)
            {
                IntPtr hWnd = FindWindowEx(intPtr, IntPtr.Zero, "edit", null);
                StringBuilder stringBuilder = new StringBuilder(104857600);
                int num = SendMessage(hWnd, 13, stringBuilder.Capacity, stringBuilder);
                binaryWriter.Write(stringBuilder.ToString() + "\r\n---------------------------------------------------\r\n");
                intPtr = FindWindowEx(IntPtr.Zero, intPtr, "notepad", null);
            }
            MemoryStream streamz = new MemoryStream(memoryStream.ToArray());
            BinaryReader rd = new BinaryReader(streamz);
            
            return rd.ReadString();

        }


        private const int WM_GETTEXT = 13;


        private const int WM_GETTEXTLENGTH = 14;
    }
}

Win10之前可以获取所有打开的notepad.exe内容，但是最近测试发现只能获取窗口最前的，可能与版本或代码问题，未进行深入测试

DEATHTOUCH

对于使用标准Windows控件的编辑器（例如notepad），可以这么做，用SendMessage获取Text，还可以获取选中的文本。
但是对于许多自定义的文本内容（比如浏览器），就不行了，但是好在微软提供了无障碍阅读机制，提供了UIAutomation系列API，不过需要软件支持，几大浏览器基本都支持。

yishengi

正好在学习C#语言，多看大神写的代码有利于帮助，谢谢大佬

likehanhan

优秀，测试通过