> 
 > Is there a way to dynamically modify a pop-up menu? Lets say there are 3 
 > menu items optA, optB and optC. Sometimes I want to disable optA. Is 
 > there a way to do it? (I prefer to grey-out this menu item. But deleting 
 > the menu item and reinserting it later is also ok)

Yes! Use function cg:set-menu-item-availaable-p

In your example:
  Suppose your dialog is boud to *example-dialog* and the menu-items
  have names :optA, :optB, and :optC. Then you could write functions

  (defun set-menu-item-inactive (menu-item-name dialog)
     (cg:set-menu-item-availaable-p 
                 (cg:find-named-object menu-item-name
                                       dialog)
                 NIL)
    )

  (defun set-menu-item-active (menu-item-name dialog)
     (cg:set-menu-item-availaable-p 
                 (cg:find-named-object menu-item-name
                                       dialog)
                 T)
    )

Call to function
   (set-menu-item-inactive :optA *example-dialog*)
will turn this menu-item inavtive

Call to function
   (set-menu-item-active :optA *example-dialog*)
will turn it avtive again.

This should do the job. Hope that helps.

   Gerd

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       Gerd Sutschet
       Fraunhofer IITB               E-mail:  <iitb.fhg.de at sutschet>
       Fraunhoferstr. 1              Phone:   (+49)721 / 6091-370       
       D - 76131 Karlsruhe           Fax:     (+49)721 / 6091-413
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