Determines whether there is a primary selection of a particular kind.
capi
selection-empty self &optional format => result
self⇩ |
A displayed CAPI pane or interface. |
format⇩ |
A keyword. |
result | t or nil . |
The function selection-empty
returns nil
if there is a primary selection of the kind indicated by format associated with self, or t
if there is no such selection.
format controls what kind of object is checked. The following values of format are recognized:
:string |
The object is a string. This is the default value. |
:image |
The object is of type image, converted from whatever format the platform supports. |
:value |
The object is the Lisp value. |
CAPI User Guide and Reference Manual (Unix version) - 01 Dec 2021 19:32:42