==== KbdFlushBuffer ====

**Bindings**: [[flushbuf#C bindings|C]], [[flushbuf#MASM bindings|MASM]]

This call clears the keystroke buffer. 

KbdFlushBuffer (KbdHandle) 

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

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

|0 |NO_ERROR |
|439 |ERROR_KBD_INVALID_HANDLE |
|445 |ERROR_KBD_FOCUS_REQUIRED |
|447 |ERROR_KBD_KEYBOARD_BUSY |
|464 |ERROR_KBD_DETACHED |
|504 |ERROR_KBD_EXTENDED_SG |

**Remarks**

//KbdFlushBuffer// completes when the handle has access to the physical keyboard (focus), or is equal to zero and no other handle has the focus. 


**Family API Considerations**

Some options operate differently in the DOS mode than in the OS/2 mode. The //KbdHandle// is ignored when coding in the DOS mode. 

=== C bindings ===

<code c>
#define INCL_KBD

USHORT  rc = KbdFlushBuffer(KbdHandle);

HKBD             KbdHandle;     /* Keyboard handle */

USHORT           rc;            /* return code */
</code>

=== MASM bindings ===

<code asm>
EXTRN  KbdFlushBuffer:FAR
INCL_KBD            EQU 1

PUSH   WORD    KbdHandle     ;Keyboard handle
CALL   KbdFlushBuffer

Returns WORD
</code>