How can i use qt5 in code blocks by using c++?

Answer 1

You could try QT creator as IDE instead. It is probably better than code blocks especially for QT development.
Otherwise this link might be helpful:
https://stackoverflow.com/questions/20849987/setting-up-codeblocks-with-qt#20853574

And a personal tip of mine: On Linux developing with QT is probably easier.

Answer 2

yahya sh, if you can, please find fitting tags for your questions. This is meant to help other people look up your question later.

This one could for example have 'qt5', 'C++' and 'codeblocks'.