mitem_userptr - associate application data with a menu item
int set_item_userptr(ITEM *item, void *userptr);
void *item_userptr(const ITEM *item);
Every menu item has a field that can be used to hold application-specific
data (that is, the menu-driver code leaves it alone). These
functions get and set that field.
Except for item_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).
The header file <menu.h> automatically includes the header file
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.
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