KbdClose

Description

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