Code::Blocks F9 Doesn't Do Anything
I'm brand new to Programming and working my way through the C++ tutorial on this site (I've reached lesson 2!). I'm having a problem that is probably just me doing something stupid.
When I open Code::Blocks and my Project, I can click F9 and it compiles and runs. If I then make any changes to the code, F9 does nothing. The Green Run shortcut icon is not highlighted and if I go to the Build tab on the main menu, that too is greyed out.
Even if I open a new project, F9 does nothing. The only way I can get it to compile and run again is to shut down Code::Blocks and restart it.
Any ideas? Even if I'm just being really, really stupid?!