Returns the contents of the system clipboard.
capi
clipboard self &optional format => result
| self⇩ | 
A displayed CAPI pane or interface. | 
| format⇩ | 
A keyword. | 
| result | 
A string, an image, a Lisp object, or  nil. | 
The function clipboard returns the contents of the system clipboard as a string, or nil if the clipboard is empty.
format controls what kind of object is read. 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. | 
| :metafile | 
The object is a metafile. | 
When format is :image, the image returned by clipboard is associated with self, so you can free it explicitly with free-image or it will be freed automatically when the pane is destroyed.
When format is :metafile the object is a metafile which should be freed using free-metafile when no longer needed. See also draw-metafile and draw-metafile-to-image. format :metafile is not supported on GTK+ or X11/Motif.
The Microsoft Windows clipboard is usually set by the user with the Ctrl+C and Ctrl+X gestures. Note that the LispWorks editor uses these gestures when in Windows emulation mode.
On X11/Motif, various gestures may set the clipboard. Note that LispWorks uses Ctrl+C and Ctrl+X when in KDE/Gnome editor emulation mode. The X clipboard can also be accessed by running the program xclipboard or the Emacs function x-get-clipboard.
The macOS clipboard is usually set by the user with the Command+C and Command+X gestures.
clipboard-empty
draw-metafile
draw-metafile-to-image
free-image
free-metafile
image
selection
set-clipboard
text-input-pane-paste
18.6 Clipboard
CAPI User Guide and Reference Manual (Unix version) - 01 Dec 2021 19:32:42