11-02-2005
functiom pointers
Hi all
i wonder about function pointers as i never used them in my C code .
could any tell me why and where exactly function pointers come into
picture .
thanq
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LEARN ABOUT REDHAT
new_item
mitem_new(3X) mitem_new(3X)
NAME
mitem_new - create and destroy menu items
SYNOPSIS
#include <menu.h>
ITEM *new_item(const char *name, const char *description);
int free_item(ITEM *item);
DESCRIPTION
The function new_item allocates a new item and initializes it from the name and description pointers. Please notice that the item stores
only the pointers to the name and description. Those pointers must be valid during the lifetime of the item. So you should be very carefull
with names or descriptions allocated on the stack of some routines.
The function free_item de-allocates an item. Please notice that it is the responsibility of the application to release the memory for the
name or the description of the item.
RETURN VALUE
The function new_item returns NULL on error.
The function free_item returns one of the following:
E_OK The routine succeeded.
E_SYSTEM_ERROR
System error occurred (see errno).
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
E_CONNECTED
Item is connected to a menu.
SEE ALSO
curses(3X), menu(3X).
NOTES
The header file <menu.h> automatically includes the header file <curses.h>.
PORTABILITY
These routines emulate the System V menu library. They were not supported on Version 7 or BSD versions.
AUTHORS
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S. Raymond.
mitem_new(3X)