仅对利用“关键发展”和“关键”活动镇压关键重复的每一个人附加说明。 如果你这样做,就必须排除诸如Alt/Shift等捕获杂货钥匙,否则这些钥匙不会被送去你想要的实际钥匙,因为这是两个关键的组合,而钥匙Down和“关键”事件会触及所有钥匙。

This applies to all two-key combinations. I did not add all of the meta keys to the following example, just the most common ones. You can easily add your own keys by adding them to the collection. Extending on the post from BFree:

public partial class Form1 : Form
{
    private static readonly System.Collections.Generic.ICollection<System.Windows.Forms.Keys) ExcludeKeys = new System.Collections.Generic.HashSet<System.Windows.Forms.Keys)()
    {
        System.Windows.Forms.Keys.None,
        System.Windows.Forms.Keys.Shift,
        System.Windows.Forms.Keys.ShiftKey,
        System.Windows.Forms.Keys.LShiftKey,
        System.Windows.Forms.Keys.RShiftKey,
        System.Windows.Forms.Keys.Alt,
        System.Windows.Forms.Keys.Control,
        System.Windows.Forms.Keys.ControlKey,
        System.Windows.Forms.Keys.LControlKey,
        System.Windows.Forms.Keys.RControlKey,
        System.Windows.Forms.Keys.CapsLock,
        System.Windows.Forms.Keys.NumLock,
        System.Windows.Forms.Keys.LWin,
        System.Windows.Forms.Keys.RWin
    }

    private bool isKeyPressed = false;
    public Form1()
    {
        InitializeComponent();
        this.textBox1.KeyDown += new KeyEventHandler(textBox1_KeyDown);
        this.textBox1.KeyUp += new KeyEventHandler(textBox1_KeyUp);
    }

    void textBox1_KeyUp(object sender, KeyEventArgs e)
    {
        if (!ExcludeKeys.Contains(e.KeyCode))
        {
            isKeyPressed = false;
        }
    }

    void textBox1_KeyDown(object sender, KeyEventArgs e)
    {
        if (!ExcludeKeys.Contains(e.KeyCode))
        {
            e.SuppressKeyPress = isKeyPressed;
            isKeyPressed = true;
        }
    }
}

您可使用主要能源企业的SupressKeyPress财产:

public partial class Form1 : Form
{
    private bool isKeyPressed = false;
    public Form1()
    {
        InitializeComponent();
        this.textBox1.KeyDown += new KeyEventHandler(textBox1_KeyDown);
        this.textBox1.KeyUp += new KeyEventHandler(textBox1_KeyUp);
    }

    void textBox1_KeyUp(object sender, KeyEventArgs e)
    {
        isKeyPressed = false;
    }

    void textBox1_KeyDown(object sender, KeyEventArgs e)
    {
        e.SuppressKeyPress = isKeyPressed;
        isKeyPressed = true;
    }


}

bool prevent = false;
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
    e.SuppressKeyPress = prevent;
}

private void textBox1_KeyUp(object sender, KeyEventArgs e)
{
    prevent = false;
}

private void textBox1_TextChanged(object sender, EventArgs e)
{
    prevent = true;
}

我不熟悉C#中的具体内容,但我想到的是:

while (keyIsDown){
//do nothing
}

工作。 如果无法追踪一个关键因素,我将感到惊讶。