menu_pattern3x
Set and get a menu's pattern buffer
Usage
#include <menu.h>
int set_menu_pattern(MENU *menu, const char *pattern); char *menu_pattern(const MENU *menu);
Overview
Every menu has an associated pattern match buffer. As input events that are printable characters come in, they are appended to this match buffer and tested for a match, as described in menu_driver(3X).
The function set_menu_pattern sets the pattern buffer for the given menu and tries to find the first matching item. If it succeeds, that item becomes current; if not, the current item does not change.
The function menu_pattern returns the pattern buffer of the given menu.
Return value
The function menu_pattern returns a pointer, which is NULL if the menu parameter is NULL. Otherwise, it is a pointer to a string which is empty if no pattern has been set. It does not set errno.
The function set_menu_pattern may return the following error codes:
|
The routine succeeded. |
|---|---|
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Routine detected an incorrect or out-of-range argument. |
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Routine was called from an initialization or termination function. |
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No items are connected to menu. |
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Character failed to match. |
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System error occurred (see errno(3)). |
Portability
These routines emulate the System V menu library. They were not supported on Version 7 or BSD versions.