I'm interested to know why you have 'Multiplayer' in the topic title. Are you thinking of the situation where a player adjusts his/her window size independently of other players?
Yes that was the idea!
All the rest, also thx <img src="smileys/smiley17.gif" border="0" align="middle" />
I don't know why it didn't occur to me that it is just resizing the game, and still uses the pixels from the "game world" like Ashley said..
Perhaps i got confused because I've read that if you don't use
* Delta Time, Different Framerates will change the tick speed.
(yeah that's probably it..)
Thx all :p, was just a thought though xD, but a Zoom Function could be interesting for my game..