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 navigation request or it's a printable ASCII character. The menu driver requests are as follows:
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.
curses(3X) , menu(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.