menu_userptr - associate application data with a menu item
#include <menu.h>
int set_menu_userptr(MENU *menu, void *userptr);
void *menu_userptr(const MENU *menu);
Every menu and every menu item has a field that can be
used to hold application-specific data (that is, the menudriver
code leaves it alone). These functions get and set
the menu user pointer field.
Except for menu_userptr (which returns NULL on error),
each function returns one of the following:
E_OK The routine succeeded.
E_SYSTEM_ERROR [Toc] [Back]
System error occurred (see errno).
curses(3), menu(3).
The header file <menu.h> automatically includes the header
file <curses.h>.
These routines emulate the System V menu library. They
were not supported on Version 7 or BSD versions.
The user pointer should be a void pointer. We leave it as
a char pointer for SVr4 compatibility.
Juergen Pfeifer. Manual pages and adaptation for new
curses by Eric S. Raymond.
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