grDevices (version 3.4.0)

dev.interactive: Is the Current Graphics Device Interactive?

Description

Test if the current graphics device (or that which would be opened) is interactive.

Usage

dev.interactive(orNone = FALSE)
deviceIsInteractive(name = NULL)

Arguments

orNone

logical; if TRUE, the function also returns TRUE when .Device == "null device" and getOption("device") is among the known interactive devices.

name

one or more device names as a character vector, or NULL to give the existing list.

Value

dev.interactive() returns a logical, TRUE if and only if an interactive (screen) device is in use. deviceIsInteractive returns the updated list of known interactive devices, invisibly unless name = NULL.

Details

The X11 (Unix), windows (Windows) and quartz (macOS, on-screen types only) are regarded as interactive, together with JavaGD (from the package of the same name) and CairoWin and CairoX11 (from package https://CRAN.R-project.org/package=Cairo). Packages can add their devices to the list by calling deviceIsInteractive.

See Also

Devices for the available devices on your platform.

Examples

dev.interactive()
print(deviceIsInteractive(NULL))