13.3 The Text Cursor
13.3.2 The Stream Text Cursor Protocol
The following generic functions comprise the stream text cursor protocol. Any extended output stream class must implement methods for these generic functions. stream-text-cursor [Generic Function]
- Arguments:
- stream
(setf stream-text-cursor) [Generic Function]
- Arguments:
- cursor stream
- Summary:
- Returns (or sets) the text cursor object for the stream stream.
stream-cursor-position [Generic Function]
- Arguments:
- stream
- Summary:
- Returns the current text cursor position for the extended output stream stream as two integer values, the x and y positions.
(setf* stream-cursor-position) [Generic Function]
- Arguments:
- x y stream
- Summary:
- Sets the text cursor position of the extended output stream stream to x and y. x and y are in device units, and must be integers. For the details of setf*, see Appendix C.4, "Multiple-Value Setf."
stream-increment-cursor-position [Generic Function]
- Arguments:
- stream dx dy
- Summary:
- Moves the text cursor position of the extended output stream stream relatively, adding dx to the x coordinate and dy to the y coordinate. Either of dx or dy may be nil, meaning the the x or y cursor position will be unaffected. Otherwise, dx and dy must be integers.
CLIM 2.0 User's Guide - OCT 1998 Generated with Harlequin WebMaker