It's necessarily to learn about GUI in c++ ? why there are no lessons about it here ?

Answer 1

Our tutorials here only provide lessons for beginners. If you wish to look into GUI on C++, you will need other reference material.

Answer 2

C++ gui programming tends to be rather detail oriented (both in structure and in familiarity with multiple libraries). As such, it's much easier to focus on the basics of the language when you limit the I/O to stdin & stdout.

As mentioned, Solo Learn is more about introduction and giving you a taste of what you can do with these tools. There are many resources out there to expand your knowledge into other areas. For instance, libraries like curses (I think?) and OpenGL are available for your home use, but making use of them will be fairly involved.

If I may make a suggestion (as someone who has done that kind of thing ages ago):

Answer 3

Argh, posted to soon.

Anyway, I would suggest getting your feet wet with a language that has more support for GUIs (both Python and Java have extensive and well documented sets of tools for this). Then, when you've got a handle on the basics, go for the lower level, nitty gritty that C++ offers.