KbdOpen

Bindings: C, MASM

This call creates a new logical keyboard.

KbdOpen (KbdHandle)

KbdHandle (PHKBD) - output Address of the logical keyboard.

rc (USHORT) - return Return code descriptions are:

0	NO_ERROR
440	ERROR_KBD_NO_MORE_HANDLE
441	ERROR_KBD_CANNOT_CREATE_KCB
464	ERROR_KBD_DETACHED
504	ERROR_KBD_EXTENDED_SG

Remarks

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

KbdGetFocus wait until focus available on handle 0 KbdOpen get a logical keyboard handle KbdOpen get another logical keyboard handle KbdOpen get yet another logical keyboard handle KbdFreeFocus give up the focus on handle 0.

C bindings

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

MASM bindings

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