popup menu and capi:simple-pinboard-layout (LWW 4.2.7)

Hello,

I wish to have popup menus (context menu on right mouse button), on my 
pinboard layout.

I have the following in an interface definition

(pinboard
    capi:simple-pinboard-layout
    '(grid)
    :visible-border nil
    :input-model '(((:button-1 :release) play-square) )
    :pane-menu 'in-extend-tree-view-test-menu)

However this doesn't seem to work. What am I doing wrong?

Rene.

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