Windows下使用UIAutomation技术遍历桌面窗口和指定窗口内容的AutomationWalker.exe的C#源代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Automation;
//引用"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\UIAutomationClient.dll"
//引用"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\UIAutomationTypes.dll"namespace ConsoleApp1
{class Program{static void WalkElement(AutomationElement element, TreeWalker walker, int depth, int limit){Console.WriteLine($"{new string(' ', depth * 2)}" + $"\"{element.Current.Name}\"");if (limit>0 && depth>=limit) return;AutomationElement child = walker.GetFirstChild(element);while (child != null){WalkElement(child, walker, depth + 1, limit);child = walker.GetNextSibling(child);}}static void Main(string[] args){if (args.Length < 1){Console.WriteLine("Usage: AutomationWalker \"window_title\"|desktop");return;} else if (args[0]=="desktop"){try{Console.WriteLine("Walker desktop begin ...");//Get the destkop elementAutomationElement elemDesktop = AutomationElement.RootElement;TreeWalker walker = TreeWalker.ControlViewWalker;WalkElement(elemDesktop, walker, 0, 1);Console.WriteLine("... Walker desktop end.");}catch (Exception){Console.WriteLine("Walker desktop error!");}return;}try{Console.WriteLine("Walker begin ...");//Get the destkop elementAutomationElement elemDesktop = AutomationElement.RootElement;//Search the Application main window by title from all childrenPropertyCondition pCondition = new PropertyCondition(AutomationElement.NameProperty, args[0]);AutomationElementCollection elemApplicationWindows = elemDesktop.FindAll(TreeScope.Children, pCondition);Console.WriteLine("elemApplicationWindows.Count:" + elemApplicationWindows.Count);for (int i = 0; i < elemApplicationWindows.Count; i++){TreeWalker walker = TreeWalker.ControlViewWalker;WalkElement(elemApplicationWindows[i], walker, 0, 0);}Console.WriteLine("... Walker end.");}catch (Exception){Console.WriteLine("Walker error!");}}}
}

将以上代码放在C#控制台项目中，生成AutomationWalker.exe

用法：

在cmd窗口中输入命令

AutomationWalker.exe desktop

列出当前桌面上所有窗口的用双引号括住的标题，比如

Walker desktop begin ...
""
""
"管理员: 命令提示符 - automationwalker  desktop"
"新标签页 - Google Chrome"
"dummyLayeredWnd"
"Program Manager"
... Walker desktop end.

输入命令

AutomationWalker.exe "新标签页 - Google Chrome"

列出窗口"新标签页 - Google Chrome"的内容。

当你想要提取某个窗口的文本内容时，使用AutomationWalker会很方便。