KbdClose

Legacy Function Warning
It is recommended to use a newer replacement for this function.
Replacement:
Remarks:	This page list the older version of the function for reference.

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.

Example Code

C Binding

#define INCL_KBD

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

MASM Binding

EXTRN  KbdOpen:FAR
INCL_KBD            EQU 1

PUSH@  WORD    KbdHandle     ;Keyboard handle
CALL   KbdOpen

Returns WORD