This is part of Family API which allow to create dual-os version of program runs under OS/2 and DOS

Note: This is legacy API call. It is recommended to use 32-bit equivalent

KbdClose

This call closes the existing logical keyboard identified by the keyboard handle.

Syntax

KbdClose (KbdHandle)

Parameters

KbdHandle (HKBD) - input: Default keyboard or the logical keyboard.

Return Code

rc (USHORT) - return:Return code descriptions are:

0 - NO_ERROR

439 - ERROR_KBD_INVALID_HANDLE

464 - ERROR_KBD_DETACHED

504 - ERROR_KBD_EXTENDED_SG

Remarks

KbdClose blocks while another thread has the keyboard focus (by way of KbdGetFocus) until the thread with the focus issues KbdFreeFocus. Therefore, to prevent KbdClose from blocking, it is recommended that KbdClose be issued only while the current thread has the focus. For example:

KbdGetFocus:Wait until focus available on handle 0.
KbdClose:Close a logical keyboard handle.
KbdClose:Close another logical keyboard handle.
KbdClose:Close still another logical keyboard handle.
KbdFreeFocus:Give up the focus on handle 0.

Bindings

C

#define INCL_KBD USHORT rc = KbdOpen(KbdHandle); PHKBD KbdHandle; /* Keyboard handle */ USHORT rc; /* return code */

MASM

EXTRN KbdOpen:FAR INCL_KBD EQU 1 PUSH@ WORD KbdHandle ;Keyboard handle CALL KbdOpen Returns WORD