[转] – MSHTML选择文字

2011-07-22 作者：夏洪英

if (textRange != null)

 if (pt.Y > 0)

        textRange = (IHTMLTxtRange)document.selection.createRange();

        document = (mshtml.IHTMLDocument2)Obj.Document.DomDocument;

 //textRange.moveStart("character", -document.body.innerText.Length);

 //textRange.moveEnd("character", document.body.innerText.Length);

 string prev = document.body.innerText.Substring(0, pt.X);

 string back = document.body.innerText.Substring(pt.X + pt.Y);

 //经测试发现,moveStart及moveEnd方法没有将换行符计算在内。

         Regex reg = new Regex("\r\n");

        MatchCollection mc = reg.Matches(prev);

        MatchCollection mc2 = reg.Matches(back);

 int n1 = mc.Count;

 int n2 = mc2.Count;

        textRange.moveStart("character", pt.X - n1);

        textRange.moveEnd("character", -(document.body.innerText.Length - (pt.X + pt.Y)-n2));

    textRange.select();