Re: [gtkmm] TreeView custom cell renderers and create_row_drag_icon() interaction

[murrayc t-online de (Murray Cumming)]

Could you create some small-as-possible, compileable, example code to
demonstrate this and add it to bugzilla?

On Mon, 2002-12-30 at 16:25, Pieter van Prooijen wrote:
> Hello,
> 
> (I'm not 100% sure if this is a gtkmm problem or a gtk+ API issue)
> 
> I'm experimenting with a custom cell renderer derived from
> CellRendererText which has its own render_vfunc() method, which works
> find when drawing normal rows.
> 
> I'm also using drag & drop with a custom cursor using the
> create_row_drag_icon() method. The problem is that render_vfunc() has a
> refptr to a Window as its first argument, where as the
> create_row_drag_icon() method invokes the cell renderer vfunc with a
> Drawable.
> 
> Because the drawable is wrapped in a RefPtr<GtkWindowObject>, the
> creation of this ref pointer fails (it tries to do a <dynamic_cast> from
> the drawable to a window object, so we get a null pointer) and an
> invalid window reference results.
> 
> Is this a problem in the gtk+ definition (which also has a Window as its
> argument, not a Drawable, but of course doesn't have the dynamic cast
> problem) or in the gtkmm wrapper of the cellrender API, or is there
> something else I'm missing ?
> 
> Let me know if I should provide more info,
> 
> Many thanks,
> 
> Pieter van Prooijen
> 
> 
> 
> 
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-- 
Murray Cumming
murray usa net
www.murrayc.com