C#模拟键盘输入-白红宇

C#模拟键盘输入

阅读量：5260 次

发布时间：2019-06-14

本文共 1458 字，大约阅读时间需要 4 分钟。

　　主要使用了Windows API 实现，你可以在你C盘下的system32文件夹中找到user32.dll，函数的说明在MSDN都有，只需要拿名字去搜一下就行

　　根据窗口的类名和窗口名称获取窗口句柄，成功返回一个窗口的句柄，否则返回0：

[DllImport("User32.dll", EntryPoint = "FindWindow")]        private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

　　在窗口列表中寻找与指定条件相符的第一个子窗口

[DllImport("user32.dll", EntryPoint = "FindWindowEx")]        static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpClass, string lpszWindow);

　　找到句柄后向窗口发送消息，SendMessage方法有很多的重载

[DllImport("user32.dll ", EntryPoint = "SendMessage")]        public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam);        [DllImport("user32.dll", EntryPoint = "SendMessage")]        public static extern IntPtr SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);

const int WM_CHAR = 0x0102;        const int WM_SETTEXT = 0x000C;        const int VK_RETURN = 0x0d;        static void Main(string[] args)        {            IntPtr handle = FindWindow(null, "Hello.txt - 记事本");            handle = FindWindowEx(handle, IntPtr.Zero, "Edit", null);            if (handle == IntPtr.Zero)            {                Console.WriteLine("没有找到句柄");                return;            }            SendMessage(handle, WM_SETTEXT, IntPtr.Zero, "Hello word!");             SendMessage(handle, WM_CHAR, (IntPtr)VK_RETURN, IntPtr.Zero);//Enter         }