Hello Orm,

The arglist part of the command-translator cannot be arbitrary. It is defined at (look above the Annotation box):

http://bauhh.dyndns.org:8000/clim-spec/edit/anno?aid=C08E110497C3F03AEACC576...

with that in mind, replacing your translator from:

(define-presentation-to-command-translator blank-area-click (blank-area com-blank-area-click clim-quo :gesture :select :echo nil) (x y) (list x y))

to

(define-presentation-to-command-translator blank-area-click (blank-area com-blank-area-click clim-quo :gesture :select :echo nil) (object x y) (list x y))

should work. Hope it helps.

On 08/02/2018 06:37 PM, Orm Finnendahl wrote:

Hi,

the x coordinate is nil when handling blank-area-clicks. This is how the chain is defined:

(define-presentation-to-command-translator blank-area-click (blank-area com-blank-area-click clim-quo :gesture :select :echo nil) (x y) (list x y))

(define-clim-quo-command (com-blank-area-click :name nil) ((x 'real) (y 'real)) (handle-blank-area-click (find-pane-named *application-frame* 'canvas) x y))

(defun handle-blank-area-click (pane first-point-x first-point-y) (break "blank-area-click x: ~a, y: ~a~%" first-point-x first-point-y) ;;; (details omitted...) )

When clicking in a blank area of the pane handle-blank-area-click breaks with:

blank-area-click x: nil, y: 140

The y coordinate is correct. I'm pretty sure it used to work, but the code is some years old and I'm unsure whether the api might have changed, but couldn't find anything.

This happens with most recent quicklisp mcclim-20180711-git on arch linux running sbcl 1.4.8 under X11.

Let me know if you need more details.

Any help is appreciated! I might be able to work around it by determining the mouse position within the handler code, but this seems wrong to me...

-- Orm

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Prof. Orm Finnendahl Komposition Hochschule für Musik und Darstellende Kunst Eschersheimer Landstr. 29-39 60322 Frankfurt am Main