I presume that this discussion re: FLTK opcodes xyin button and checkbox 
does *not* suggest backward incompatibility with their use in existing 
compositions - or that these compositions will no longer be playable in 
Csound 6.

Is this correct?

(I have used several if not all three of these.)

Art Hunkins


----- Original Message ----- 
From: "Rory Walsh" 
To: "Developer discussions" 
Sent: Tuesday, April 16, 2013 11:25 AM
Subject: Re: [Cs-dev] xyin discussion


Sorry Andres, I didn't see that. I've never used it but I would think
it could go. Another source of confusion for users are the button and
checkbox opcodes. I think with the abundance of frontends which
provide these widgets it can be a little misleading?

On 16 April 2013 15:52, Andres Cabrera  wrote:
> Hi,
>
> I asked about the removal of xyin in February.
>
> Cheers,
> Andrés
>
>
> ---------- Forwarded message ----------
> From: Andres Cabrera 
> Date: Thu, Feb 21, 2013 at 10:45 PM
> Subject: XY Callbacks
> To: Developer discussions 
>
>
> Hi,
>
> I'm dying to remove:
>
> PUBLIC void csoundSetMakeXYinCallback (CSOUND *,
> void(*makeXYinCallback_)(CSOUND *, XYINDAT *, MYFLT x, MYFLT y))
>
> PUBLIC void csoundSetReadXYinCallback (CSOUND *,
> void(*readXYinCallback_)(CSOUND *, XYINDAT *))
>
> PUBLIC void csoundSetKillXYinCallback (CSOUND *,
> void(*killXYinCallback_)(CSOUND *, XYINDAT *))
>
> That would mean removing the functionality needed by the xyin opcode
> (I bet you hadn't heard about that one...). The functionality is
> served by FLxyin (xyin also depends on FLTK). Can I remove the
> functions and make the xyin opcode a wrapper to FLxyin?
>
> Cheers,
> Andres
>
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Hi Art,

This does not affect the FLTK opcodes in any way, only the xyin opcode, which requires a set of functions that were removed from the API. The opcode cannot work without the API functions, so the question is, should the API functions be put back or should the opcode be left as a stub with instructions on how to port for csound 6?

I would prefer the latter, as I doubt this opcode has seem much use as it always required writing a host in c or c++. It never worked otherwise, unlike the bus opcodes.

Cheers,
Andres

> I would prefer the latter, as I doubt this opcode has seem much use as it
> always required writing a host in c or c++. It never worked otherwise,
> unlike the bus opcodes.
>

Not so.  The xyin opcode worked in csound4 and earlier.  It did not use
any callback-like code.  I still have the code.



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Great. Then maybe we can use that code instead.

Cheers,
Andres

> wasn't it once based on tcl/tk?

Not in cs4.  Direct code in X11 and other systems


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