KbdSetFgnd: Difference between revisions
Created page with "==Description== This call raises the priority of the foreground keyboard's thread. ==Syntax== <PRE> KbdSetFgnd ( ) </PRE> ==Parameters== rc (USHORT) - return Return c..." |
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This call raises the priority of the foreground keyboard's thread. | This call raises the priority of the foreground keyboard's thread. | ||
==Syntax== | ==Syntax== | ||
KbdSetFgnd () | |||
KbdSetFgnd | |||
==Parameters== | ==Parameters== | ||
;rc (USHORT) - return:Return code descriptions are: | |||
* 0 NO_ERROR | |||
*447 ERROR_KBD_KEYBOARD_BUSY | |||
*504 ERROR_KBD_EXTENDED_SG | |||
==Return Code== | ==Return Code== | ||
KbdSetFgnd marks the current process that owns the keyboard. Threads in this process receive a priority boost. The previous foreground keyboard threads lose their priority boost. | KbdSetFgnd marks the current process that owns the keyboard. Threads in this process receive a priority boost. The previous foreground keyboard threads lose their priority boost. | ||
This function should only be issued by a Keyboard Subsystem during KbdCharIn or KbdStringIn processing. | This function should only be issued by a Keyboard Subsystem during [[KbdCharIn]] or [[KbdStringIn]] processing. | ||
== | ==Bindings== | ||
=== C | === C === | ||
<PRE> | <PRE> | ||
#define INCL_KBD | #define INCL_KBD | ||
| Line 29: | Line 22: | ||
USHORT rc = KbdSetFgnd(VOID); | USHORT rc = KbdSetFgnd(VOID); | ||
USHORT | USHORT rc; /* return code */ | ||
</PRE> | </PRE> | ||
===MASM | ===MASM=== | ||
<PRE> | <PRE> | ||
EXTRN KbdSetFgnd:FAR | EXTRN KbdSetFgnd:FAR | ||
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</PRE> | </PRE> | ||
[[Category:Kbd]] | |||
[[Category: | |||
Latest revision as of 16:34, 3 January 2019
This call raises the priority of the foreground keyboard's thread.
Syntax
KbdSetFgnd ()
Parameters
- rc (USHORT) - return
- Return code descriptions are:
- 0 NO_ERROR
- 447 ERROR_KBD_KEYBOARD_BUSY
- 504 ERROR_KBD_EXTENDED_SG
Return Code
KbdSetFgnd marks the current process that owns the keyboard. Threads in this process receive a priority boost. The previous foreground keyboard threads lose their priority boost.
This function should only be issued by a Keyboard Subsystem during KbdCharIn or KbdStringIn processing.
Bindings
C
#define INCL_KBD USHORT rc = KbdSetFgnd(VOID); USHORT rc; /* return code */
MASM
EXTRN KbdSetFgnd:FAR INCL_KBD EQU 1 CALL KbdSetFgnd Returns WORD