How to prevent copy-paste text ?

Hi,

I want to prevent copy-paste (CTRL + V) text. How to make it ? My codes are below :

CKEDITOR.editorConfig = function (config) {

var m = location.search.match(/[&?]skin=([\w-]+)/);

config.skin = m ? m[1] : 'ozone';

config.removePlugins = 'imagebutton,image,about,anchor-rtl,anchor,docprops-rtl,docprops,find-rtl,find,flash,form,hiddenfield,bidiltr,bidirtl,blockquote,elementspath,enterkey,entities,forms,pastefromword,htmldataprocessor,specialchar,horizontalrule,wsc,smiley,find,paste,print,iframe,indent-rtl,newpage-rtl,newpage,redo,replace,save,scayt,select-rtl,select,selectall,showblocks-rtl,showblocks,smiley,source-rtl,specialchar,spellchecker,strike,subscript,superscript,table,templates-rtl,templates,textarea-rtl,textarea,link,source,creatediv,paste,cut,copyipastetext,undo,redo,docprops,templates,document,div,table,pagebreak,anchor,subscript,superscript,strikethrough,sourcearea,tablo,preview,tabletools,pastefromword,clipboard';

  config.keystrokes = [

    [CTRL + 86 /*V*/, false]

  ];
  
};