a1200   NEWS   APPS   DOCS   ABOUT
a1200
----
a1200
----
Autodocs
 Libraries:
 commodities.library
  ActivateCxObj
  AddIEvents
  AttachCxObj
  ClearCxObjError
  CreateCxObj
  CxBroker
  CxMsgData
  CxMsgID
  CxMsgType
  CxObjError
  CxObjType
  DeleteCxObj
  DeleteCxObjAll
  DisposeCxMsg
  DivertCxMsg
  EnqueueCxObj
  InsertCxObj
  InvertKeyMap
  MatchIX
  ParseIX
  RemoveCxObj
  RouteCxMsg
  SetCxObjPri
  SetFilter
  SetFilterIX
  SetTranslate
Include
GuruMeditation
Docs » Autodocs » commodities.library » CxMsgData

NAME

	CxMsgData -- obtain a pointer to a commodity message's data area. (V36)

SYNOPSIS

	data = CxMsgData(cxm);
D0 A0
APTR CxMsgData(struct CxMsg *);

FUNCTION

	Most commodity messages contain meaningful data such as an InputEvent
structure. This function returns a pointer to this data.
You may get a commodity message from a synchronous (custom object) or
asynchronous (sender object) source. In the second case, 'data' is
not valid after you have replied to the message.

INPUTS

	cxm - the commodity message to get the data pointer from (may be NULL)

RESULT

	data - a pointer to the message's data, or NULL if 'cxm' is NULL.
The meaning of the data varies depending on which kind of
object is being inspected.

BUGS

	Until V38, passing a NULL 'cxm' parameter would cause low-memory
access and unpredictable results.
Until V40, whenever the data pointer is a (struct InputEvent), the
ie_EventAddress field of these structures was not reliable whenever
the message was generated by a sender object.

SEE ALSO

cx_lib/CxSender, cx_lib/CxCustom

Comments

Name:
E-mail: Use this if you want a message if you get a response, will not be shown.
Comment:
Select correct short for:

Dual Crew

DC
ATX
CSL
SNT

Comments:

$VER: d0.se 1.14 Copyright © 2011-2024 Tobias Geijersson support at d0 dot se