首页 > Windows开发 > 详细

C#实现的三种方式实现模拟键盘按键

时间:2021-05-25 22:20:02      阅读:18      评论:0      收藏:0      [点我收藏+]

模拟按键在.Net中有三种方式实现。

第一种方式:System.Windows.Forms.SendKeys 

                     组合键:Ctrl = ^ 、Shift = + 、Alt = %

模拟按键:A

 

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            SendKeys.Send("{A}");
        }

模拟组合键:CTRL + A

 

 

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Focus();
            SendKeys.Send("^{A}");
        }

SendKeys.Send // 异步模拟按键(不阻塞UI)

 

SendKeys.SendWait // 同步模拟按键(会阻塞UI直到对方处理完消息后返回)

第二种方式:keybd_event

模拟按键:A

 

        [DllImport("user32.dll", EntryPoint = "keybd_event", SetLastError = true)]
        public static extern void keybd_event(Keys bVk, byte bScan, uint dwFlags, uint dwExtraInfo);

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            keybd_event(Keys.A, 0, 0, 0);
        }

模拟组合键:CTRL + A

 

 

        public const int KEYEVENTF_KEYUP = 2;

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.A, 0, 0, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);
        }

上面两种方式都是全局范围呢,现在介绍如何对单个窗口进行模拟按键

 

模拟按键:A / 两次

 

        [DllImport("user32.dll", EntryPoint = "PostMessageA", SetLastError = true)]
        public static extern int PostMessage(IntPtr hWnd, int Msg, Keys wParam, int lParam);

        public const int WM_CHAR = 256;

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            PostMessage(textBox1.Handle, 256, Keys.A, 2);
        }

 

模拟组合键:CTRL + A

       如下方式可能会失效,所以最好采用上述两种方式

 

        public const int WM_KEYDOWN = 256;
        public const int WM_KEYUP = 257;

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.A, 0, 0, 0); 
            PostMessage(webBrowser1.Handle, WM_KEYDOWN, Keys.A, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);

C#实现的三种方式实现模拟键盘按键

原文:https://www.cnblogs.com/wzihan/p/14810337.html

(0)
(0)
   
举报
评论 一句话评论(0
关于我们 - 联系我们 - 留言反馈 - 联系我们:wmxa8@hotmail.com
© 2014 bubuko.com 版权所有
打开技术之扣,分享程序人生!