\HeaderA{dev.interactive}{Test if an Interactive Graphics Device is in Use}{dev.interactive}
\keyword{device}{dev.interactive}
\begin{Description}\relax
Test if an interactive graphics device is in use.
\end{Description}
\begin{Usage}
\begin{verbatim}
dev.interactive()
\end{verbatim}
\end{Usage}
\begin{Details}\relax
The \code{X11} (Unix), \code{windows} (Windows) and \code{quartz}
(MacOS X) are regarded as interactive, together with \code{GTK} and
\code{gnome} (used with the GNOME GUI: \code{GTK} is available in
package \pkg{gtkDevice} and \code{gnome} is expected to be in a
package \pkg{gnomeDevice}).
\end{Details}
\begin{Value}
\code{dev.interactive()} returns a logical, \code{TRUE} iff an
interactive (screen) device is in use.
\end{Value}
\begin{SeeAlso}\relax
\code{\LinkA{Devices}{Devices}} for the available devices on your platform.
\end{SeeAlso}

