Re: Graphing development - question

[Jean Bréfort <jean brefort ac-dijon fr>]

Le mer 17/12/2003 à 22:15, Emmanuel Pacaud a écrit :
> Hi,
>
> I'm currently trying to implement single element formatting in the
> graphing engine of gnumeric (like changing drawing attributes of a pie 
> part).
>
> To do so, I need to track mouse events in the chart area, at the
> gog_control_foocanvas level, which is the way user will select a serie
> element. What I've done is to override the event function.

Seems logical.

> The problem is that as soon as a button click occur over the
> chart area, the chart is selected and no more mouse events are transmitted 
> to gog_control_foocanvas.

That is very strange. I have implemented anolog things elsewhere and
they work ((using GnomeCanvas, but it should be the samething with
foocanvas). Could you provide some sample code?

> In fact, I need the exact opposite behaviour, I want to handle mouse
> event only when chart is selected.
>
> Any idea on how to enable transmission of mouse events to a foocanvas_item when 
> it's selected ?
>
>       Emmanuel.
>
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