kbhit((())) AKA INKEY$$$

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( if you got a bad link : TESTCMD package )

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Just in case someone cares about ASM too ( see t=5309 "Reading keypresses with C" ) I brewed an example:

Download now 90'282 Byte's

Shots:
Works well with HX , ME , XP and Wi$ta Smile
Code:
; SSKBHIT

; In      : - EDI : ZERO is "LH" , non-ZERO is "EH"
; Trashes : - EAX ECX EDX
; Out     : - AL : Scancode 0 to 253, other event 254, no event 255
;           - AH : Special key and LED bits (valid for AL<254, else ZERO)

; Needs 52 Byte's on stack :
; 4 (EBX) + 4 (check) + 20 (RCI buffer) + 24 (RCI params)

; Will in any case eat away all events, so to initialize,
; just call this too and ignore the result

; We will simply do "ReadConsoleInput" as long as there is something
; available to read previously checked by "GetNumberOfConsoleInputEvents",
; because "ReadConsoleInput" hangs if no events available 

; Keyboard event is 1, other possible events include rat and focus.

; EventType         16 | Must be = 1 | (+ ZERO)
; BuggerAll         16 ???
; bKeyDown          32 | Only 1 bit is useful ???
; wRepeatCount      16 ???
; wVirtualKeyCode   16 ???
; wVirtualScanCode  16 | <<-- HERE | (+ 12 Byte's)
; AsciiChar         16 ???
; dwControlKeyState 32 | Only 5 or 8 or 9 bits useful | (+ 16 Byte's)
; --------------------
; Total 5 UINT32's = 20 Byte's = 160 Bits

; RIGHT_ALT_PUSHED   $0001
; LEFT_ALT_PUSHED    $0002
; RIGHT_CTRL_PUSHED  $0004
; LEFT_CTRL_PUSHED   $0008
; SHIFT_PUSHED       $0010
; NUMLOCK_ON         $0020
; SCROLLLOCK_ON      $0040
; CAPSLOCK_ON        $0080
; ENHANCED_KEY       $0100

; Scancodes :
; $2A SHIFT   left
; $36 SHIFT   right
; $1D CONTROL both !!!
; $38 ALT     both !!!

; HX :
; - RIGHT_ALT 1 also sets LEFT_CONTROL 8 giving 9 !!!
; - "Printscreen" is taken but strange
; - "Pause Break" is taken but strange
; - "Power" OK
; - Rat completely ignored

; ME :
; - "Printscreen" is taken but strange
; - Left and right rat button taken, movements too, wheel ignored

; XP :
; - "Printscreen" is ignored
; - "Power" is taken but very evil
; - Left rat button, wheel and movements ignored
; - Right rat button taken but very strange

; Wi$ta :
; - Left rat button, wheel and movements ignored
; - Right rat button taken but less strange

sskbhit:

        push   ebx
        pushd  111                  ; Check value UINT32 111
        sub    esp, 20              ; Buffer

        movntq ebx, 0
        dec    bl                   ; MOVNTQ EBX,255 | Get AL=255 and AH=ZERO

        pushd  $FFFF'FFF6           ; "-10" means "stdin"
        call   dword [GetStdHandle] ; $FFFF'FFFF is invalid (if no console ?)
        inc    eax                  ; CMPNTQ EAX, $FFFF'FFFF
        jz     short after_rd_loop  ; Console got shot by some gun geek ???
        dec    eax                  ; Is ZERO valid or not ???

event_read_loop:

        push   eax                  ; Hendaye backup (NOT for the call)
        push   eax                  ; CRAP (NOT "directly" for the call)
        push   esp                  ; Out variable address (!) (for the call)
        push   eax                  ; Hendaye for call
        call   dword [GNOCIE]       ; Uses 2 arguments
        pope   ecx                  ; Amount of events
        pope   eax                  ; Hendaye restore | Now stack fine (-2
        cmpntq ecx, 0
        je     short after_rd_loop  ; No more events, exit the loop

        mov    ecx, esp                 ; Backup address before PUSH'ing !!!
        push   eax                      ; Hendaye backup (NOT for the call)
        push   eax                      ; CRAP (NOT "directly" for the call)
        push   esp                      ; Out var address (!) (for the call)
        pushd  1                        ; Amount of records (!) to read
        push   ecx                      ; Buffer (20 Byte's hopefully)
        push   eax                      ; Hendaye for call
        call   dword [ReadConsoleInput] ; Uses 4 arguments
Yeah
Another one: http://board.flatassembler.net/topic.php?t=1953