PICL Plug-In Library Functions ptree_register_handler(3PICLTREE)
NAME
ptree_register_handler - register a handler for the event
SYNOPSIS
cc [ flag... ] file... -lpicltree [ library... ]
#include
int ptree_register_handler(const char *ename,
void (*evt_handler)(const char *ename, const void *earg,
size_t size, void *cookie), void *cookie);
DESCRIPTION
The ptree_register_handler() function registers an event
handler for a PICL event. The argument ename specifies the name of the PICL event for which to register the handler.The argument evt_handler specifies the event handler func-
tion. The argument cookie is a pointer to caller-specific
data to be passed as an argument to the event handler when it is invoked. The event handler function must be defined asvoid evt_handler(const char *ename, const void *earg, \
size_t size, void *cookie)
where, ename, earg, size, and cookie are the arguments passed to the event handler when it is invoked. The argument ename is the PICL event name for which the handler is invoked. The arguments earg and size gives the pointer to the event argument buffer and its size, respectively. The argument cookie is the pointer to the caller specific data registered with the handler. The arguments ename and eargpoint to buffers that are transient and shall not be modi-
fied by the event handler or reused after the event handler finishes execution. The PICL framework invokes the event handlers in the order in which they were registered when dispatching an event. If the event handler execution order is required to be the sameas the plug-in dependency order, then a plug-in should
register its handlers from its init function. The handlersthat do not have any ordering dependencies on other plug-in
handlers can be registered at any time. The registered handler may be called at any time after this function is called.SunOS 5.11 Last change: 1 Aug 2000 1
PICL Plug-In Library Functions ptree_register_handler(3PICLTREE)
RETURN VALUES
Upon successful completion, 0 is returned. On failure, anon-negative integer is returned to indicate an error and
the handler is not registered.ERRORS
PICL_INVALIDARG Invalid argument
PICL_FAILURE General system failure
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Interface Stability | Committed ||_____________________________|_____________________________|
| MT-Level | MT-Safe |
|_____________________________|_____________________________|
SEE ALSO
ptree_unregister_handler(3PICLTREE), attributes(5)
SunOS 5.11 Last change: 1 Aug 2000 2