After following some tutorials i tried to use exuberant ctags to autocomplete e.g. openGL functions. I used the command
ctags -R --languages=C,C++ --c++-kinds=+p --fields=+iaS --extra=+q ./
in the directory where the freeglut.h, glew.h etc resides. Then copying this to a directory pointed by in the .vimrc file (with 'set tags+=./myTag/tags' in my .vimrc)
When I try to autocomplete some glut functions i dont get the funciton parameters listed, only the function itself gets completed, but without the parameters.
On the other hand, when Im applying the ctags command above to a .cpp file in the same directory where my main file resides it autocompletes with the function parameters.
Im probably missing some essential information here.
Firstly, I'm tired of managing ctags by hand, and I wrote plugin Indexer for that. It provides painless automatic tags generation and keeps tags up-to-date. For detailed information, see the article: Vim: convenient code navigation for your projects, which explains the usage of Indexer + Vimprj thoroughly.
And secondly, for code autocompletion, I suggest you to use clang_complete. It provides real, perfect C/C++/Objective-C completion from true compiler, not ugly method by tags.
In your .vimrc file, before adding the tag files, add the directory. So if you added the tage in $HOME/.vim/tags directory you need to add the following line
set tags=~/.vim/tags
The section (in your .vimrc) referred to OmniCppComplete may be something like this:
" configure tags - add additional tags here or comment out not-used ones
" Setting the directory...
set tags=~/.vim/tags
" Adding the tag files
set tags+=~/.vim/tags/cpp
set tags+=~/.vim/tags/gl
set tags+=~/.vim/tags/sdl
set tags+=~/.vim/tags/qt4
" set tags+=/home/yonatan/.vim/tags/standard
" build tags of your own project with Ctrl-F12
map <C-F12> :!ctags -R --sort=yes --c++-kinds=+p --fields=+iaS --extra=+q .<CR>
" OmniCppComplete
let OmniCpp_NamespaceSearch = 1
let OmniCpp_GlobalScopeSearch = 1
let OmniCpp_ShowAccess = 1
let OmniCpp_ShowPrototypeInAbbr = 1 " show function parameters
let OmniCpp_MayCompleteDot = 1 " autocomplete after .
let OmniCpp_MayCompleteArrow = 1 " autocomplete after ->
let OmniCpp_MayCompleteScope = 1 " autocomplete after ::
let OmniCpp_DefaultNamespaces = ["std", "_GLIBCXX_STD"]
" automatically open and close the popup menu / preview window
au CursorMovedI,InsertLeave * if pumvisible() == 0|silent! pclose|endif
set completeopt=menuone,menu,longest,preview
