[cells-devel] Celtk: Making a widget or an item invisible - how?

[Frank Goenninger]

Hi again -

I have the following model:

(defmodel workarea (ctk::widget ctk::window)
    ((visiblep :accessor visiblep :initform (c- 
in :undefined) :initarg :visiblep))
    (:default-initargs
           :id (gensym "WORKAREA-")))

This workarea is meant to work as a manager for kids that will be  
displayed if visiblep (yeah, it's not visible-p ;-) is t and will be  
invisible when visiblep is nil. Question now is how that can be  
done... Via an observer that walks all kids and configures them as  
invisible? If so, then I have the following questions:

1. Tk-related: How to configure arbitrary objects as invisible ?
2. Cells-related: How to walk a family object's kids to call a  
function with the paths of the kids ?

Thx!

Frank