Clears external image conversions for a port.
graphics-ports
clear-external-image-conversions external-image-or-null gp-or-null &key free-image all errorp
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. |
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
.
CAPI User Guide and Reference Manual (Windows version) - 01 Dec 2021 19:34:15