KbdSynch

This call synchronizes access from a keyboard subsystem to the keyboard device driver.

Syntax
KbdSynch (IOWait)

Parameters

 * IOWait (USHORT) - input : Wait for the bond. Values are:
 * 0 - Indicates the requestor does not wait for access to the device driver.
 * 1 - Indicates the requestor waits for access to the device driver.

Return Code

 * rc (USHORT) - return:Return code descriptions are:
 * 0 NO_ERROR
 * 121 ERROR_SEM_TIMEOUT

Remarks
KbdSynch blocks all other threads within a session until return from the subsystem to the router. To ensure proper synchronization, KbdSynch should be issued by a keyboard subsystem if it intends to issue a DosDevIOCtl or access dynamically shared data. KbdSynch does not protect globally shared data from threads in other sessions.

C

 * 1) define INCL_KBD

USHORT rc = KbdSynch(IOWait);

USHORT IOWait;        /* Indicate if wait */ USHORT rc;            /* return code */ 

MASM
 EXTRN KbdSynch:FAR INCL_KBD           EQU 1

PUSH  WORD    IOWait        ;Indicate if wait CALL  KbdSynch

Returns WORD 