(not so) silly presentation question

• To: pc@breeze.bellcore.com, clim@BBN.COM
• Subject: (not so) silly presentation question
• From: Markus Fischer <SUN4.SGER!MF%sger.uucp@BBN.COM>
• Date: Thu, 7 May 1992 15:01+0200
• In-Reply-To: <19920506171049.9.PC@ALEX.ims.bellcore.com>

    Date: Wed, 6 May 1992 19:10+0200
    From: Peter Clitherow <unido!breeze.bellcore.com!pc>

    In dynamic windows, i could present an object with keyword values as:

    (present object `((type) :key1 ,value) :stream stream)

    but if i now define:

    (clim:define-presentation-method present (n (type group) stream view &key curr)
      ...code
    )

In CLIM, :key1 is called a presentation type option. You have to explicitly 
declare them within define-presentation-type, e.g.

(define-presentation-type group ()
	:options (key1))


Within a present method, you have implicitly access to options of the presentation type.
You may not set them in the lambda list of the present method. Just *use* the
variable named key1.

Please see the clim doc for more information about presentation type options and parameters.

    i can't seem to find the syntax that will allow me to specify the
    keyword :curr correctly.  nor do there seem to be examples in the CLIM
    demos suite of doing this.

    the analagous:

    (clim:present object `((group) :curr T) :stream stream) fails with

    Error: The value of TYPE is (GROUP :curr T), which is not a 
    presentation-type-specifier.

    can someone give me the quick fix?

    thanks
    pc

Markus Fischer
Consulting Services
Symbolics Systemhaus GmbH
Mergenthaler Allee 77-81
W-6236 Eschborn
Germany
Phone: +49 6196 47220
Fax:   +49 6196 481116
e-mail: MF@sger.uucp

• silly presentation question
• From: Peter Clitherow <pc@breeze.bellcore.com>

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