Detecting ctrl+left click on winforms application

Question

如何检测用户何时按住Ctrl并左键单击Windows窗体应用程序中的按钮？

Answer 1

You need to check the value of Form.ModifierKeys to see if Control was pressed, eg:

    btn.Click += new EventHandler(btn_Click);

    private void btn_Click(object sender, EventArgs e)
    {
        if (Form.ModifierKeys == Keys.Control)
        {
            // Do Ctrl-Left Click Work
        }
    }