[PD] canvas_makefilename() returns error

[Jaime E Oliver via Pd-list]

Ah, yes, I see now. 

I solved it by adding:

 x->x_canvas = canvas_getcurrent();

in _new

thanks!

J

On Jun 29, 2014, at 11:56 PM, Jonathan Wilkes <jancsika at yahoo.com> wrote:

> It's hard to say without seeing the code.
> 
> Does x->x_canvas actually point to a canvas?  The error seems to be telling you it isn't.
> 
> (Consistency check errors come from the bug() function.  Generally they occur when an argument, struct, or struct field is checked for existence and fails that check.)
> 
> -Jonathan
> On Sunday, June 29, 2014 9:25 PM, Jaime E Oliver <jaime.oliver2 at gmail.com> wrote:
> 
> 
> Yes, 
> 
> in the main struct x_canvas is created as:
> 
> t_canvas *x_canvas;
> 
> So, I think that is not the problem.
> 
> J
> 
> 
> 
> 
> 
> On Jun 29, 2014, at 8:00 PM, Jonathan Wilkes <jancsika at yahoo.com> wrote:
> 
>> Well, it expects a t_canvas *, so if you send it something else it will trigger the error.
>> 
>> -Jonathan
>> 
>> 
>> On Sunday, June 29, 2014 8:47 PM, Jaime E Oliver via Pd-list <pd-list at lists.iem.at> wrote:
>> 
>> 
>> Hi all, 
>> 
>> I am trying to use the canvas_makefilename() function in g_canvas.c
>> 
>> I am calling it like this: 
>> 
>> static void lilypond_write(t_lilypond *x, t_symbol *s) {
>>     char buf[MAXPDSTRING];
>>     canvas_makefilename(x->x_canvas, s->s_name, buf, MAXPDSTRING);
>> }
>> 
>> but when I send the object a message such as [write test.txt( or similar, I get:
>> 
>> error: consistency check failed: canvas_getenv
>> Bus error: 10
>> 
>> The method is set up like this:
>>     class_addmethod(lilypond_class, (t_method)lilypond_write, gensym("write"), A_SYMBOL, 0);
>> 
>> Anybody has any suggestion?
>> 
>> best,
>> 
>> J
>> 
>> PS Sorry for pestering everyone with this, but there is little documentation on some of the functions in Pd. Perhaps this thread belong in the Pd-Dev list?
>> _______________________________________________
>> Pd-list at lists.iem.at mailing list
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>> 
>> 
> 
> 
> 

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