Is Canada Visitor Visa enough to fill in for France/UK Transit Visa

[anudep]

I am on an expired H1-B and need to travel to india immediately. I know we require a transit visa for UK or France but given the limited amount of time i have, Can i get a Canada visitor visa and transit through UK/France ? I have heard some of my friends do it but i wanted to confirm if that is a valid workaround ?