Gmoney
Thanks for your reply. You misunderstood my question. I want to ask the way to create a fx effect, not run it <img src="{SMILIES_PATH}/icon_e_biggrin.gif" alt=":D" title="Very Happy">
Sorry, my poor English is main cause for misunderstanding <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile">
You're welcome, gameba. <img src="{SMILIES_PATH}/icon_mrgreen.gif" alt=":mrgreen:" title="Mr. Green"> Oh, no. It was me who misunderstood. (Sorry about that. <img src="{SMILIES_PATH}/icon_mrgreen.gif" alt=":mrgreen:" title="Mr. Green">)
Both .fx and .xml files can be opened by Notepad, and you'll notice the .fx file is basically a programming code.
Here's a tutorial that explains how .fx and .xml files work, and how other pre-existing codes can be converted to C2's fx and xml format.
https://www.scirra.com/tutorials/4900/shader-toy-to-c2