-- card: 3055 from stack: in.0 (US)
-- bmap block id: 3273
-- flags: 0000
-- background id: 2661
-- name: 


-- part 1 (field)
-- low flags: 01
-- high flags: 0007
-- rect: left=69 top=68 right=252 bottom=434
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 9
-- style flags: 0
-- line height: 12
-- part name: 


-- part 25 (button)
-- low flags: 00
-- high flags: A003
-- rect: left=201 top=278 right=316 bottom=346
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: IsObject
----- HyperTalk script -----
on mouseUp
  ask "object :" with "cd btn 1"
  if it ≠ empty
  then answer IsObject(it)
end mouseUp



-- part contents for card part 1
----- text -----

                                              IsObject 1.0

                                         © Frédéric RINALDI


DESCRIPTION
------------
  IsObject is a  XFCN allowing to test the existence of an HyperCard object.


SYNTAX
-------
                              IsObject (<object descriptor>)


PARAMETERS
------------

    The object descriptor can be any valid HyperTalk descriptor (number, name or id). If a name is used, it must me enclosed in quotes :

       IsObject ("card button" && quote & "My button" & quote)

   Using "!" and "?" as parameter will return an online help (resp. copyright and syntax).


USING
-----
   The XFCN returns "true" if the object exists, "false" if not.

   If an error occurs, it can return :

                 "Error : Missing parameter"
---------------------------------------------------------------------

This (these) external(s) is (are) FreeWare,allowing unlimited use in any non-commercial stack. You just need in this case to mention the author's name and copyright in your stack.
Any commercial use must be licensed and aknowledged by the author.

                                  © F. Rinaldi - 1989,1990

AppleLink: RINALDI1        CalvaCom : FR10        Compuserve : 71170,2111