If I may, I will respond in English.
The offence of luring requires the Crown to prove beyond a reasonable doubt that the accused communicated for the purpose of committing one of the enumerated offences. The example you give involves offences under section 151, which specifies that there be touching. Typically, in these luring cases, charges relate to section 152, which is an invitation to sexual touching, so the accused, through their communications, typically asks the young person to answer some very sexually explicit questions, to touch themselves, etc., and that type of thing. The offence is committed--looking at the luring offence right now--even if there's no touching, because the communication is “for the purpose of”. That's where the criminal intent is.
When you have situations of pop-ups or things like that, again the question would be whether there is intent when an accused is turning off or trying to get out of these things that come up on the Internet. If they involve, for example, child pornography, accessing child pornography is an offence, but the Crown would still have to prove that the accused intended to access that. So if it's a pop-up and they're trying to get out, it's a different situation. But when you look at the cases that have been reported, it's clear that the communications form the basis for these charges. They are typically back and forth, and it is fairly explicit that the accused is describing exactly what he wants to do to the young person, and vice versa, and then often there is a rendezvous to meet. The criminal intent is in the communications for the purpose of, and it's typically relating to the section 152 charge. There is one case that involved the child abduction offence, in which the child was actually abducted as a result.