About cls-.dll functioning?????
 

Can anyone tell me what are the functioning of cls-.dll files in inno scripts or In the case of extracting a file??
and yes also about how do I get these files???

Look at any of the CIU version files those files are already present & integrated into the conversion making process.

They help freearc manage external compressors like precomp srep and etc, for callback and etc.
About getting them, well you make them, the ones cls-srep.dll, cls-precomp.dll, those are already made by someone.

is existing cls-msc.dll support pack_frog????

I don't know but version 0.0.6.4 supports that.

are we have to paste source code of program at the place of simple-codec.cpp, in the process of cls-.dll making?
sorry for bad english

I tried to follow but I don't understand what you are say.

I think he/she ask how to build new dll from sources.

Well then he must use a programming software that specialises in CPP

{pf}/freearc/addons/cls
I am referring files in above directory

I think that's the source or example which you use to create a cls dll