Cute Editor doesn't provide this kind of API.
You can use the following API to get the editor Document objet and implement your own method:
Getting the Active Editor Document
In order to find the active editor document, you would type:
// get the active editor document
var editdoc = editor1.GetDocument();
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx