[PD] Tcl error for [knob] and [mknob]

[Christof Ressi]

Sorry, if I'm being obvious: I found 'sys_getversion' at the end of m_glob.c which returns major and minor version number at runtime.
 
Christof

Gesendet: Donnerstag, 22. September 2016 um 17:56 Uhr
Von: "Antoine Rousseau" <antoine at metalu.net>
An: Kein Empfänger
Cc: Pd-list <pd-list at lists.iem.at>
Betreff: Re: [PD] Tcl error for [knob] and [mknob]

Thanks a lot ! I think I get it. I'll do it asap.
 
2016-09-22 17:06 GMT+02:00 IOhannes m zmoelnig <zmoelnig at iem.at>:On 2016-09-22 12:21, Antoine Rousseau wrote:
> 2016-09-22 11:03 GMT+02:00 IOhannes m zmoelnig <zmoelnig at iem.at[zmoelnig at iem.at]>:
>
>> On 2016-09-22 08:37, Antoine Rousseau wrote:
>>> you need
>>> to be aware of the version at compilation time, and have to use this
>>> version at runtime. So I don't think you can build an external that would
>>> be compatible for both versions.
>>
>> why?
>>
>
> Because interfaces changed :
>
> -void iemgui_save(t_iemgui *iemgui, t_symbol **srl, int *bflcol)
> +void iemgui_save(t_iemgui *iemgui, t_symbol **srl, t_symbol**bflcol)
[...]
>
> so how could I build a binary that would switch the interface of iemgui_save
> at runtime, following the version of the running Pd ?
>
>


in pseudo code:
if(pd<0.47)
  iemgui_save(x, srl, i_color);
else
  iemgui_save(x, srl, s_color);

this will give you some compiler warnings, but you can do:

typedef void(t_iemgui_save_old*)(t_iemgui *iemgui, t_symbol **srl, int
*bflcol);
typedef void(t_iemgui_save_new*)(t_iemgui *iemgui, t_symbol **srl,
t_symbol **bflcol);

if(pd<0.47) {
    t_iemgui_save_old isave=(t_iemgui_save_old)iemgui_save;
    isave(x, srl, i_color);
} else {
    t_iemgui_save_old isave=(t_iemgui_save_new)iemgui_save;
    isave(x, srl, s_color);
}

fgmsdr
IOhannes


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Antoine Rousseau 
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