private void button3_Click(object sender, EventArgs e)
{
//选择文章里的词点击查词之后
var a = new ShowWordForm(MainWin, new Word(this.richTextBox1.SelectedText));
a.ShowDialog();
}
private void button1_Click(object sender, EventArgs e)
{
//打开查询单词的窗口
string searchWord = richTextBox1.Text;
var a = new ShowWordForm(this, new Word(searchWord));
a.ShowDialog();
}