clear-external-image-conversions

clear-external-image-conversions Function

Summary

Clears external image conversions for a port.

Package

graphics-ports

Signature

clear-external-image-conversions external-image-or-null gp-or-null &key free-image all errorp

Arguments

`external-image-or-null`⇩
	An external image or `nil`.
`gp-or-null`⇩	A graphics port or `nil`.
`free-image`⇩	A boolean.
`all`⇩	A boolean.
`errorp`⇩	A boolean.

Description

The function clear-external-image-conversions clears the external image conversions for a port.

If external-image-or-null is nil, then conversions for all images are cleared. Otherwise, only conversions for external-image-or-null are cleared.

If gp-or-null is nil all conversions are cleared using the image-color-users. If all is non-nil all conversions for all ports are cleared using gp-or-null. Conversions are also freed if free-image is non-nil. By default, free-image is t, all is (null gp-or-null), and errorp is t.