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Интерактивная система просмотра системных руководств (man-ов)

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menu_driver (3)
  • >> menu_driver (3) ( Solaris man: Библиотечные вызовы )
  • menu_driver (3) ( FreeBSD man: Библиотечные вызовы )
  • menu_driver (3) ( Linux man: Библиотечные вызовы )
  •  

    NAME

    menu_driver - command processor for the menus subsystem
     
    

    SYNOPSIS

    cc [ flag... ] file... -lmenu  -lcurses  [ library... ]
    #include <menu.h>
    
    int menu_driver(MENU *menu, int c);
    

     

    DESCRIPTION

    menu_driver() is the workhorse of the menus subsystem. It checks to determine whether the character c is a menu request or data. If c is a request, the menu driver executes the request and reports the result. If c is data (a printable ASCII character), it enters the data into the pattern buffer and tries to find a matching item. If no match is found, the menu driver deletes the character from the pattern buffer and returns E_NO_MATCH. If the character is not recognized, the menu driver assumes it is an application-defined command and returns E_UNKNOWN_COMMAND.

    Menu driver requests:

    REQ_LEFT_ITEM

    Move left to an item.

    REQ_RIGHT_ITEM      

    Move right to an item

    REQ_UP_ITEM

    Move up to an item.

    REQ_DOWN_ITEM

    Move down to an item.

    REQ_SCR_ULINE

    Scroll up a line.

    REQ_SCR_DLINE

    Scroll down a line.

    REQ_SCR_DPAGE

    Scroll up a page.

    REQ_SCR_UPAGE

    Scroll down a page.

    REQ_FIRST_ITEM

    Move to the first item.

    REQ_LAST_ITEM

    Move to the last item.

    REQ_NEXT_ITEM

    Move to the next item.

    REQ_PREV_ITEM

    Move to the previous item.

    REQ_TOGGLE_ITEM

    Select/de-select an item.

    REQ_CLEAR_PATTERN

    Clear the menu pattern buffer.

    REQ_BACK_PATTERN

    Delete the previous character from pattern buffer.

    REQ_NEXT_MATCH

    Move the next matching item.

    REQ_PREV_MATCH

    Move to the previous matching item.

     

    RETURN VALUES

    menu_driver() returns one of the following:

    E_OK

    The routine returned successfully.

    E_SYSTEM_ERROR

    System error.

    E_BAD_ARGUMENT

    An incorrect argument was passed to the routine.

    E_BAD_STATE

    The routine was called from an initialization or termination function.

    E_NOT_POSTED

    The menu has not been posted.

    E_UNKNOWN_COMMAND

    An unknown request was passed to the menu driver.

    E_NO_MATCH

    The character failed to match.

    E_NOT_SELECTABLE

    The item cannot be selected.

    E_REQUEST_DENIED

    The menu driver could not process the request.

     

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    MT-LevelUnsafe

     

    SEE ALSO

    curses(3CURSES), menus(3CURSES), attributes(5)  

    NOTES

    Application-defined commands should be defined relative to (greater than) MAX_COMMAND, the maximum value of a request listed above.

    The header <menu.h> automatically includes the headers <eti.h> and <curses.h>.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ATTRIBUTES
    SEE ALSO
    NOTES


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