Every menu has an associated user pointer that can be used to store relevant information. set_menu_userptr() sets the user pointer of menu. menu_userptr() returns the user pointer of menu.
Return Values
menu_userptr() returns NULL on error.
set_menu_userptr() returns one of the following:
E_OK
The routine returned successfully.
E_SYSTEM_ERROR
System error.
Attributes
See attributes(7) for descriptions of the following attributes: