As usual while waiting for the next release - don't forget to check the nightly builds in the forum.
In C::B it is called Code completion.Try some of the newest nightlies for a better CC experience.
Codecompletion plugin do these things. You can try it or improve it with us.
Not sure what version you use. I suggest:try a nightly build version of Codeblocks. or build the SVN version yourself.