vl-file-directory-p (AutoLISP)

Determines if a file name refers to a directory

(vl-file-directory-p filename)

Arguments

filename

A string containing a file name. If you do not specify a full path name, vl-file-directory-p searches only the AutoCAD default drawing directory.

Return Values

T, if filename is the name of a directory; nil if it is not.

Examples

(vl-file-directory-p "sample")
T

(vl-file-directory-p "yinyang")
nil

(vl-file-directory-p "c:/My Documents")
T

(vl-file-directory-p "c:/My Documents/visuallisp/yinyang.lsp")
nil