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/*
------------------------------------------------------
Methode KeyboardLED zur Steuerung der Keyboard-LEDs
(NumLock/CapsLock/ScrollLock-Lichter)
Benutzungshinweise: Man benutze
KeyboardLED(LEDvalue,"Cmd"), wobei
Cmd = on/off/switch,
LEDvalue: ScrollLock=1, NumLock=2, CapsLock=4,
bzw. eine beliebige Summe dieser Werte:
AlleAus=0, CapsLock+NumLock=6, etc.
Der folgende Code wurde übernommen von:
http://www.autohotkey.com/forum/viewtopic.php?t=10532
Um eventuelle Wechselwirkungen mit dem bestehenden
Code (insb. der Unicode-Konvertierung) auszuschließen,
sind auch alle (Hilfsmethoden) mit dem Postfix LED
versehen worden.
------------------------------------------------------
*/
KeyboardLED(LEDvalue, Cmd){ ; LEDvalue: ScrollLock=1, NumLock=2, CapsLock=4 ; Cmd = on/off/switch
Static h_device
If ! h_device ; initialise
{
device=\Device\KeyBoardClass0
SetUnicodeStrLED(fn,device)
h_device:=NtCreateFileLED(fn,0+0x00000100+0x00000080+0x00100000,1,1,0x00000040+0x00000020,0)
}
VarSetCapacity(output_actual,4,0)
input_size=4
VarSetCapacity(input,input_size,0)
If Cmd=switch ;switches every LED according to LEDvalue
KeyLED:=LEDvalue
If Cmd=on ;forces all choosen LED's to ON (LEDvalue= 0 ->LED's according to keystate)
KeyLED:=LEDvalue | (GetKeyState("ScrollLock", "T") + 2*GetKeyState("NumLock", "T") + 4*GetKeyState("CapsLock", "T"))
If Cmd=off ;forces all choosen LED's to OFF (LEDvalue= 0 ->LED's according to keystate)
{
LEDvalue:=LEDvalue ^ 7
KeyLED:=LEDvalue & (GetKeyState("ScrollLock","T") + 2*GetKeyState("NumLock","T") + 4*GetKeyState("CapsLock","T"))
}
; EncodeIntegerLED(KeyLED,1,&input,2) ;input bit pattern (KeyLED): bit 0 = scrolllock ;bit 1 = numlock ;bit 2 = capslock
input:=Chr(1) Chr(1) Chr(KeyLED)
input:=Chr(1)
input=
success:=DllCall("DeviceIoControl"
, "uint", h_device
, "uint", CTL_CODE_LED( 0x0000000b ; FILE_DEVICE_KEYBOARD
, 2
, 0 ; METHOD_BUFFERED
, 0 ) ; FILE_ANY_ACCESS
, "uint", &input
, "uint", input_size
, "uint", 0
, "uint", 0
, "uint", &output_actual
, "uint", 0 )
}
CTL_CODE_LED(p_device_type,p_function,p_method,p_access ){
Return, ( p_device_type << 16 ) | ( p_access << 14 ) | ( p_function << 2 ) | p_method
}
NtCreateFileLED(ByRef wfilename,desiredaccess,sharemode,createdist,flags,fattribs){
VarSetCapacity(fh,4,0)
VarSetCapacity(objattrib,24,0)
VarSetCapacity(io,8,0)
VarSetCapacity(pus,8)
uslen:=DllCall("lstrlenW","str",wfilename)*2
InsertIntegerLED(uslen,pus,0,2)
InsertIntegerLED(uslen,pus,2,2)
InsertIntegerLED(&wfilename,pus,4)
InsertIntegerLED(24,objattrib,0)
InsertIntegerLED(&pus,objattrib,8)
status:=DllCall("ntdll\ZwCreateFile","str",fh,"UInt",desiredaccess,"str",objattrib,"str",io,"UInt",0,"UInt",fattribs
,"UInt",sharemode,"UInt",createdist,"UInt",flags,"UInt",0,"UInt",0, "UInt")
return ExtractIntegerLED(fh)
}
SetUnicodeStrLED(ByRef out, str_){
VarSetCapacity(st1, 8, 0)
InsertIntegerLED(0x530025, st1)
VarSetCapacity(out, (StrLen(str_)+1)*2, 0)
DllCall("wsprintfW", "str", out, "str", st1, "str", str_, "Cdecl UInt")
}
ExtractIntegerLED(ByRef pSource, pOffset = 0, pIsSigned = false, pSize = 4){
; pSource is a string (buffer) whose memory area contains a raw/binary integer at pOffset.
; The caller should pass true for pSigned to interpret the result as signed vs. unsigned.
; pSize is the size of PSource's integer in bytes (e.g. 4 bytes for a DWORD or Int).
; pSource must be ByRef to avoid corruption during the formal-to-actual copying process
; (since pSource might contain valid data beyond its first binary zero).
Loop %pSize% ; Build the integer by adding up its bytes.
result += *(&pSource + pOffset + A_Index-1) << 8*(A_Index-1)
if (!pIsSigned OR pSize > 4 OR result < 0x80000000)
return result ; Signed vs. unsigned doesn't matter in these cases.
; Otherwise, convert the value (now known to be 32-bit) to its signed counterpart:
return -(0xFFFFFFFF - result + 1)
}
InsertIntegerLED(pInteger, ByRef pDest, pOffset = 0, pSize = 4){
; The caller must ensure that pDest has sufficient capacity. To preserve any existing contents in pDest,
; only pSize number of bytes starting at pOffset are altered in it.
Loop %pSize% ; Copy each byte in the integer into the structure as raw binary data.
DllCall("RtlFillMemory", "UInt", &pDest + pOffset + A_Index-1, "UInt", 1, "UChar", pInteger >> 8*(A_Index-1) & 0xFF)
}
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