WPF RichTextBox - 在当前插入符号位置获取整个单词 [英] WPF RichTextBox - get whole word at current caret position

问题描述

我在 WPF 富文本框上启用了拼写，我想在显示带有拼写建议的上下文菜单之前在当前插入符号位置获取拼写错误的单词.

I enabled spelling on my WPF richtextbox and I want to get the misspelled word at current caret position before the context menu with spelling suggestions is displayed.

推荐答案

新方法

    void richTextBox1_PreviewKeyDown(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Back)
        {
            TextPointer start = richTextBox1.CaretPosition;
            string text1 = start.GetTextInRun(LogicalDirection.Backward);
            TextPointer end = start.GetNextContextPosition(LogicalDirection.Backward);
            string text2 = end.GetTextInRun(LogicalDirection.Backward);

            richTextBox1.Selection.Select(start, end);
            richTextBox1.Selection.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Black);
            richTextBox1.Selection.Select(start, start);
            //e.Handled = true;
        }
    }

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