Nope
QR codes is when you take a specific QR code, make sure that in Box 1 Slot 1 of your PC there is no Pokemon, go to the home button without turning off your game, press L + R, scan QR code with your camera, go to the link it takes you to and wait for it to crash. When you return to the game you'll either get the Pokemon the QR code was for or a bad egg (in which case you need to turn off your DS right away without saving).
It's not possible for the new 3ds or a legit way to get Pokemon.