X.org ::: last days after the long GTK development time, i finally digged into X.org, through Xdamage and Xrecord. this book is quite interesting, i haven't checked if the co. library has it, but anyways there are lot of pdfs available online about the extension libraries. (check x.org) . a nice example for xrecord
::: xrecord seems to be that it's not thread safe, so i'll have a lot of fun with it in the future... but maybe not, and i'll change, tomorrow we'll see.