Dialog is not a View. So before your code runs, when the
RTE compile your code, RTE complains that there is no such
a method called get-position in Dialog.
That is to say, the error you meet is not a runtime error,
but a compile error.
If you value (dlg isa View) separately, you will find the
result is "false" instead of "true".
--- 前川享仁 <[EMAIL PROTECTED]> からのメッセ
ージ：
> Hi gurus,
> I am very confused about Dialog and View.
>
> I wrote a sample code like bellow.
> --------------------------------------------------------
> {value
> let dlg:Dialog = {Dialog}
> let box:VBox = {VBox "hello."}
> {dlg.add box}
>
> {if (dlg isa View) == true then
> {dlg.get-position}
> }
> }
>
>
----------------------------------------------------------
>
> I've read online help(Curl 3.0.4) about the operator
> 'isa'.
> it says 'isa' returns true when its left operand is
> a instance
> of the same type or subtype of the right operand.
>
> If so, why this code cannot run. get-position is the
> View's
> method, as you know.
>
> Please tell me what I misunderstand.
>
> Regards.
>
> --
> -----
> 前川 享仁/Maekawa Takanobu
> e-mail:[EMAIL PROTECTED]
> CANSOFT,INC.Tel:044(969)9747 Fax:044(969)9748
> http://www.cansoft.co.jp/
>
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