[PROBLEM] CEC (new to this..)

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Thanks for the answer, it's all clearer to me now.

The video projector on the picture is the one, same as the remote.

On the Pulse Eight page, Vivitek is not listed, so I guess it needs to be tested? I don't know how to? I just take the remote and try?

And last but not least, if it works, can it work with the harmony remote? I can't go without it, as it also controls my creative dds decoder, which provides the sound from the different sources (bluray player, Rpi and wii).
I guess the bluray player would be ok with cec too, as it's a panasonic one, but no hdmi on the creative decoder.