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IsObject 1.0.cpt
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card_3055.txt
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1990-05-12
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-- 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