On Tue, 26 Aug 2003, Jeff Longland wrote:

> I'm trying to create a button that will delete a morph named JeffsTestMorph
> (sublass of Morph).  Through inheritance, JeffsTestMorph inherits the delete
> method does it not?  On mouseDown for my button, I have the following:
>
> mouseDown: evt
>     JeffsTestMorph delete.
>
> But when I click on the button I get MessageNotUnderstood: delete.  Could
> someone tell this Squeak newbie what he's doing wrong?

What you are doing wrong is sending the #delete message to the class
JeffsTestMorph rather than an instance of JeffsTestMorph, which would be
the actual morph you see. In Smalltalk, you can have instance methods and
class-side methods... Since you want to delete a specific JeffsTestMorph,
it is an instance-side method, and you send it to the instance.

How to fix it?  Change "JeffsTestMorph delete." to "self delete." and you
should be OK.

And a couple other tips-
1. Message names are case sensitive.  The subject line you used reads
"Morph>>Delete" - the message is delete, and Delete wouldn't work.

2. The format for specifying a message is Class>>#message ; that is your
message should have read Morph>>#delete.

3. Your code attempts to call JeffsTestMorph class>>#delete, but as I say
above, you mean to call JeffsTestMorph>>#delete.

Regards,
Aaron

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