Can I get a Canadian Visa if I got stuck with 221g?

[mane]

Hello,

I may sound stupid but just a thought and want to confirm if someone has ever done this or is it possible. I am stuck on 221g and want to visit my home country but I only had single entry Canadian Visa. Is there a way to get another Canadian Visa when I am already in Canada? I know, i can go back to my country and apply for canadian visa from there. But just want to know if there is anything like that or someone has ever found the same situation. Any help will be appreciated.

Thanks