跟踪用户是否在WinForm上键入特定的"单词"

Question

我有一个ScreenLocker winform应用程序.它是全屏和透明的.当用户按下时它会解锁屏幕Ctrl+Alt+Shift+P.

但我希望它更有活力.我想让用户在配置文件中设置自己的密码.

例如,他设置了密码mypass.我的问题是 - 如何跟踪他是否在该表单上键入"mypass"？

我不想在表单上有任何文本框或按钮.请帮忙.

这是我目前的代码 -

    public frmMain()
    {
        InitializeComponent();
        this.KeyPreview = true;

        this.WindowState = FormWindowState.Normal;
        this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
        this.Bounds = Screen.PrimaryScreen.Bounds;
        this.ShowInTaskbar = false;
        double OpacityValue = 4.0 / 100;
        this.Opacity = OpacityValue;
    }

    private void OnKeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.P && e.Modifiers == (Keys.Control | Keys.Shift | Keys.Alt))
        {
            this.Close();
        }
    }

Answer 1

您可以将键入的字母存储在变量中，然后在 Enter keydown 事件中检查它。这是工作样本-

public partial class Form1 : Form
{

    String pass = String.Empty;

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_KeyPress(object sender, KeyPressEventArgs e)
    {
        string value = e.KeyChar.ToString();
        pass += value;
    }

    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode==Keys.Enter)
        {
           //Now check the password with your config file.
           //You may have to reset the variable if the pass does not match with the config.
        }
    }
}