EDITOR for GUI... Do I need plug-in?

[skool daze]

Hello to everybody,
I have 13.12 and need to do a simple window GUI, with buttons, combobox for files (file explorer, whatever it is named..)

Do I need any downloadable plug-in? Or is it out of the box feature, I searched here and there,  ... with no definitive answer, only a few hints and the like.
I'd prefer some along the lines of Visual Basic, where user can modify controls in a graphical environment.
Many thanks!

[BlueHazzard]

What operating system do you use?

[hongwenjun]

Window KcpTun Udp2Raw Startup Manager Principle Introduction & CodeBlocks Simple GUI Programming

https://youtu.be/HjGO2sAPOFM

[hongwenjun]

Install the latest version of Codeblocks 20.03
Download my theme configuration       https://github.com/hongwenjun/codeblocks
resedit GUI editing tool http://www.resedit.net/