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1.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)

//这种方式适用于WinForm程序,在Console程序以及WPF程序中不适用

2.keybd_event

DLL引用

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


模拟按键:A

        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);
}


3.PostMessage

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1
        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);
}



1.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)

//这种方式适用于WinForm程序,在Console程序以及WPF程序中不适用

2.keybd_event

DLL引用

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


模拟按键:A

        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);
}


3.PostMessage

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1
        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);
}