Re: Writing to PVs

[Kay-Uwe Kasemir <kasemirk@ornl.gov>]

Hi:


Xu HuiJuan wrote:
> connect_args.chid->puser=pCurrent;                using undefined  
> type“oldChannelNotify”
The channel identifier (chid) follows the basics
of information hiding, you cannot directly access
any member elements.
Use the accessors ca_puser, ca_set_puser, ....

> pCurrent=ca_puser(connect_args.chid);           can't convert“void  
> *”to“Channel *”
>
> pCurrent->chan=ca_puser(connect_args.chid); can't convert“void *”  
> to“chid”
> I wonder how to solve it.
The ca_*puser accessors naturally deal with generic (void *),
so you might have to cast to/from (Channel *) or whatever custom type
you plan to park in the user pointer.

HTH,
-Kay