get-clipboard-bitmap in clipboard<%>
Gets the current clipboard contents as a bitmap (Windows, Mac OS),
returning #f if the clipboard does not contain a bitmap.
( -> send a-clipboard get-clipboard-bitmap time)bitmap% object or #f
time : exact integer
See Cut and Paste for a discussion of the time argument. If
time is outside the platform-specific range of times,
an exn:application:mismatch exception is raised.