Here I am telling you that how you can disable copy and paste function in blogger without lock sidebar up down scroller.
Go Blogger.com and Sign in with your user ID and password.
You can download notepad file from here. Just copy all code and paste in your new gadget. But remember if you are sharing any programming codes to other by using your blog post then nobody can copy your code. and your all posts will be waste of time.
in that case do not apply this code to your blogger blogs.