code blocks can't allow me to check an options....

[dema.king84]

I'm using Code::Blocks and I can't understand why in the image attached I can't insert the check in the box "Add file to active project in build target(s)".
it is a banality surely but I can't think of any way to overcome the problem

[Miguel Gimenez]

Do you have a project?

[dema.king84]

yes and it's called main.cpp

[Miguel Gimenez]

yes and it's called main.cpp

It does not look like a project but a source file... Can you open Project -> Properties... in the menu?

[dema.king84]

i think i solved the pseudo-problem
cause i was try to save c++source file without the project opened!
Now that I try to do same step by step with the project active with the visibile code I can go on