vim - how to compile cscope with quickfix -

in .vimrc , added set cscopequickfix=s-,c-,d-,i-,t-,e-,but when use cscope command in vim, quick window not appear automatically.

i read doc vim cscope, , tell me use "cscopequickfix=s-,c-,d-,i-,t-,e-" have compile cscope +quickfix feature.

now question how compile cscope +quickfix feathre