Next: Writing or erasing menus from window, Previous: Menu options, Up: Menu options [Contents][Index]
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.
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.
It may return the following error codes: E_OK,
E_BAD_ARGUMENT, E_BAD_STATE if the outline was called
from an initialization or termination function, E_NO_MATCH if
the character failed to match, or E_SYSTEM_ERROR.
The procedure menu-pattern returns the pattern buffer of the given menu.