Sorry for not documenting the composite object in
v0.88(APIs are not quite right as of V0.88). It just
seemd the composite object is too important to document
when there is still unpolished stuff. Hopefully
next release will have complete support and
documentation of composite objet.
The nc pointer in FL_OBJECT should point to next child
object. For example, when main loop detects
a redraw of composite object, it does the following
the mark the entire composite:
FL_OBJECT *tmp = composite->child;
for ( ; tmp; tmp = tmp->nc)
tmp->redraw = 1;
Hope this helps.
ps: if you can, try not to do much with composite
as the internals might change.
---Carl Krawl Armstrong <crarmstr@wolverine.cameron.edu> wrote:
>
> # To subscribers of the xforms list from Carl Krawl Armstrong
<crarmstr@wolverine.cameron.edu> :
>
>
> I have written several small specific objects that are composed of a
few
> standard xforms objects. Each child object remembers it's parent
using
> the parent pointer supplied in the FL_OBJECT structure and sets the
> is_child value to true. This works well. As it should be, I'm able
to
> hide and show this object via the fl_hide/show functions provided by
the
> xforms library. Now, what I need is to create yet another object that
> incorporates my other smaller objects and this is where I seem to run
> into a problem. At the moment, the larger object doesn't seem to draw
> it's child composite objects, although the handle routine for the
child
> objects doess get called. Am I doing something incorrectly perhaps?
> Also, one other thing, I have been unable to determine in what way the
> 'child' and 'nc' pointers are intended to be used in the FL_OBJECT
> structure. All that I do know concerning the 'child' pointer is that
> setting it to a created object eventually terminates with a
segmentation
> fault, which I believe occurs during redraw, although I'm not entirely
> certain of that. All help is appreciated. Thanks
>
> Carl "Krawl" Armstrong
>
>
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