I'm new to CodeLite. I clicked something that hid the sidebar navigation.
When I go to View > Show Menu Bar, the option is grayed out.
I am working in a Linux-based system, but I think I still might be able to help. I am also new to codelite/c++ and I ran into this same issue. Go to view>workspace pane or press ctrl+alt+W HTH!
Ctrl+Alt+W...that's all you need (Eureka!)