Returns the extent of a character in pixels.
graphics-ports
get-character-extent port character &optional font => left , top , right , bottom
port
A CAPI pane.
character
A character.
font
A font.
left
An integer.
top
right
bottom
The function get-character-extent returns the extent in pixels of the character in the font associated with port , or the font given.
get-character-extent
CAPI User Guide and Reference Manual (Unix version) - 3 Aug 2017