H06715 s 00176/00000/00000 d D 1.1 02/05/02 15:35:04 root 2 1 cC cF1 cK40257 cO-rw-rw-r-- e s 00000/00000/00000 d D 1.0 02/05/02 15:35:04 root 1 0 c BitKeeper file /Mastodon/Core/Build/ncurses/Ada95/html/menu_driver.3x.html cBor@egypt.pell.portland.or.us|ChangeSet|20020502223039|07086|e73225ae258b78f8 cHegypt.pell.portland.or.us cK30955 cPAda95/html/menu_driver.3x.html cR468495eda93df13c cV4 cX0x821 cZ-07:00 e u U f e 0 f x 0x821 t T I 2
menu_driver - command-processing loop of the menu system
#include <menu.h> int menu_driver(MENU *menu, int c);
Once a menu has been posted (displayed), you should funnel input events to it through menu_driver. This routine has two major input cases; either the input is a menu naviga- tion request or it's a printable ASCII character. The menu driver requests are as follows: 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 down a page. REQ_SCR_UPAGE Scroll up 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/deselect an item. Clear the menu pattern buffer. REQ_BACK_PATTERN Delete the previous character from the pattern buffer. REQ_NEXT_MATCH Move to the next item matching the pattern match. REQ_PREV_MATCH Move to the previous item matching the pattern match. If the second argument is a printable ASCII character, the code appends it to the pattern buffer and attempts to move to the next item matching the new pattern. If there is no such match, menu_driver returns E_NO_MATCH and deletes the appended character from the buffer. If the second argument is one of the above pre-defined requests, the corresponding action is performed. If the second argument is neither printable ASCII nor one of the above pre-defined menu requests, the drive assumes it is an application-specific command and returns E_UNKNOWN_COMMAND. Application-defined commands should be defined relative to MAX_COMMAND, the maximum value of these pre-defined requests.
menu_driver return one of the following error codes: E_OK The routine succeeded. E_SYSTEM_ERROR System error occurred (see errno). E_BAD_ARGUMENT Routine detected an incorrect or out-of-range argu- ment. E_BAD_STATE Routine was called from an initialization or termina- tion function. E_NOT_POSTED The menu has not been posted. E_UNKNOWN_COMMAND The menu driver code saw an unknown request code. E_NO_MATCH Character failed to match. The menu driver could not process the request.
curses(3X), menus(3x).
The header file <menu.h> automatically includes the header files <curses.h>.
These routines emulate the System V menu library. They were not supported on Version 7 or BSD versions.
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S. Raymond.E 2 I 1 E 1