Question

我试图让我的程序听我说只有当我按下shift键所谓的按键通话，我试着使用下面的代码但是当按下键的时间超过1-2秒我得到以下错误：

未处理的类型＆＃39; System.InvalidOperationException＆＃39;发生在System.Speech.dll中附加信息：识别器识别时无法执行此操作。

以下是代码的一部分：

    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {

        if (e.KeyCode == Keys.ShiftKey)
        {
            label1.BackColor = Color.Green;
            label1.Text = "Speak";
            RecEngine.RecognizeAsync(RecognizeMode.Multiple);
            e.SuppressKeyPress = true;
        }

    }

    private void Form1_KeyUp(object sender, KeyEventArgs e)
    {

        if (e.KeyCode == Keys.ShiftKey)
        {
            label1.BackColor = Color.Yellow;
            label1.Text = "Ready";
            RecEngine.RecognizeAsyncStop();
            e.SuppressKeyPress = true;
        }
    }

Answer 1

按下按钮时会重复调用Form1_KeyDown函数。

您需要检查按钮是否已被按下

    private bool recognitionRunning;

    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {

        if (e.KeyCode == Keys.ShiftKey && !recognitionRunning)
        {
            label1.BackColor = Color.Green;
            label1.Text = "Speak";
            RecEngine.RecognizeAsync(RecognizeMode.Multiple);
            e.SuppressKeyPress = true;

            recognitionRunning = true;
        }

    }

    private void Form1_KeyUp(object sender, KeyEventArgs e)
    {

        if (e.KeyCode == Keys.ShiftKey)
        {
            label1.BackColor = Color.Yellow;
            label1.Text = "Ready";
            RecEngine.RecognizeAsyncStop();
            e.SuppressKeyPress = true;

            recognitionRunning = false;
        }
    }

语音识别识别keydown上的异步

1 个答案: