Opt("TrayAutoPause",0)


Global Const $moveThresh = 20
Global Const $timeThresh = 16


Global Const $user32dll = DllOpen("user32.dll")
GUIRegisterMsg(0x00FF,WM_INPUT)
Local $struct = DllStructCreate('struct;ushort UsagePage;ushort Usage;dword Flags;hwnd Target;endstruct')
$struct.UsagePage=0x01
$struct.Usage=0x02
$struct.Flags=0x00000100
$struct.Target=GUICreate('')
DllCall('user32.dll', 'bool', 'RegisterRawInputDevices', 'struct*', $struct, 'uint', 1, 'uint', DllStructGetSize(DllStructCreate('struct;ushort UsagePage;ushort Usage;dword Flags;hwnd Target;endstruct')))

Do
Until GUIGetMsg()=-3

Func ScrollFilter($dx, $dy)
     Local Static $accuX=0, $accuY=0, $lastTime=TimerInit()
     Local $cacheX = $accuX + $dx, $cacheY = $accuY + $dy
     $accuX += $dx
     $accuY += $dy
     If TimerDiff($lastTime) >= $timeThresh Then
        $lastTime = TimerInit()
         Local $sendX = abs($cacheX) >= $moveThresh ? $cacheX : 0, $sendY = abs($cacheY) >= $moveThresh ? $cacheY : 0
        $accuX -= $sendX
        $accuY -= $sendY
        ScrollMouseXY($sendX, $sendY, $user32dll)
     EndIf
EndFunc
Func WM_INPUT($hWnd,$Msg,$wParam,$lParam)
     Local Static $HEADER ='struct;dword Type;dword Size;handle hDevice;wparam wParam;endstruct;'
     Local Static $TAG = $HEADER & 'ushort flag;ushort Alignment;ushort bflg;short bdta;ulong rbtn;long dx;long dy;ulong info;'
     Local Static $HEADSIZE = DllStructGetSize(DllStructCreate($HEADER))
     Local Static $TAGSIZE = DllStructGetSize(DllStructCreate($TAG))

     Local Static $locked = False
     Local $input = DllCall($user32dll, 'uint','GetRawInputData', 'handle', $lParam, 'uint', 0x10000003, 'struct*', DllStructCreate($TAG), 'uint*', $TAGSIZE, 'uint', $HEADSIZE )
     Local $_ = $input[3]
     If $_.bflg Then
        If BitAnd(16,$_.bflg) Then
           Local $aCall = DllCall($user32dll,"dword","GetMessagePos")
           Local $x=BitAnd(0xffff,$aCall[0]),$y=BitShift($aCall[0],16)
           Local $clip = DllStructCreate("struct;long left;long top;long right;long bottom;endstruct")
           $clip.left   = $x
           $clip.top    = $y
           $clip.right  = $x+1
           $clip.bottom = $y+1
           DllCall( $user32dll, "bool", "ClipCursor", "struct*", $clip )
           $locked = True
        Endif
        If BitAnd(32,$_.bflg) Then
           DllCall( $user32dll, "bool", "ClipCursor", "struct*", Null )
           $locked = False
        Endif
     ElseIf $locked Then
        ScrollFilter($_.dx,-$_.dy)
     EndIf
     If $wParam Then Return 0
EndFunc
Func ScrollMouseXY($x, $y, $dll='user32.dll')
     Local Static $SIZE = DllStructGetSize(DllStructCreate('dword;struct;long;long;dword;dword;dword;ulong_ptr;endstruct;'))
     Local $count = ($x?1:0)+($y?1:0)
     Local $struct, $arr = DllStructCreate('byte[' & $count*$SIZE & ']'), $ptr = DllStructGetPtr($arr)
     If $x Then
        $struct = DllStructCreate('dword type;struct;long;long;dword data;dword flag;dword;ulong_ptr;endstruct;', $ptr)
        DllStructSetData($struct,1,0)
        DllStructSetData($struct,4,$x)
        DllStructSetData($struct,5,0x1000)
     EndIf
     If $y Then
        $struct = DllStructCreate('dword type;struct;long;long;dword data;dword flag;dword;ulong_ptr;endstruct;', $ptr+($x?$SIZE:0))
        DllStructSetData($struct,1,0)
        DllStructSetData($struct,4,$y)
        DllStructSetData($struct,5,0x0800)
     EndIf
     Return $count ? DllCall( $dll, 'uint', 'SendInput', 'uint', $count, 'struct*', $ptr, 'int', $SIZE )[0] : 0
EndFunc