Thank eranif to help!
Another question, Why CodeLite can not use wxAuiToolBar on Linux?
It can. But I simply prefered not to use it but rather using wxToolbar (wxAuiToolBar is simply *ugly* under Linux, it looks like it was written for Windows and then ported to Linux/Mac)
If you really insist on enabling it, you can simply change it in the file cl_defs.h yo USE_AUI_TOOLBAR=1
Eran