The very recent version of the subcaption
package will even issue an error:
! Package caption Error: The `subcaption' package does not work correctly
(caption) in compatibility mode.
The only way to get around this is to specify the option compatibility=false
to the caption
package:
\documentclass{cifa}
\usepackage{subcaption}
\captionsetup{compatibility=false}
\begin{document}
\begin{figure}
\parbox{4cm}{\subcaption{This is a subcaption}\label{sub}}
\caption{nothing}
\label{nothing}
\end{figure}
See figure \ref{nothing}: there is \ref{sub} inside...
\end{document}
PLEASE NOTE: This way the customization of the captions done by the cifa
document class will be overwritten by the caption
package in a brute-force manner. In best case the output of the captions will look different (and some caption-related stuff offered by the cifa
document class will not work anymore), in worst case you'll get error messages and weird output. So please also take a look at the caption
package documentation, section "6 Package Support". Since this is a perfect method to shoot oneself in the foot, an extra warning is always issued when using the compatibility=false
option:
Package caption Warning: Forced redefinition of \caption since the
(caption) unsupported(!) package option `compatibility=false'
(caption) was given.
See the caption package documentation for explanation.
If you do not want this (or it does not work anyway) then the only solution left is not-using the subcaption
package. Use the subfig
package with option caption=false
(which prevents loading of the caption
package) instead:
\documentclass{cifa}
\usepackage[caption=false]{subfig}
\begin{document}
\begin{figure}
\subfloat[This is a subcaption\label{sub}]{............}
\caption{nothing}
\label{nothing}
\end{figure}
See figure \ref{nothing}: there is \ref{sub} inside...
\end{document}
cifa
class, you may be able to restore the caption style by passing options to thecaption
package, see this answer.