Experimental Physics and
Industrial Control System

Kay-Uwe Kasemir <[email protected]> · Mon, 21 Nov 2005 09:15:17 -0500

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

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System