NSIS WndSubClass error - nsis

Question

I want to study about WndSubClass Plugin
So I compiled WndSubClass Example Source
But It was errored with message
NSIS v2.42 and later required!
But I'm Using NSIS Lastest Version(3.0rc1)
What Should I do?
Code
!AddPluginDir ".\release\"
!include WndSubclass.nsh
!include WinMessages.nsh
!include LogicLib.nsh
!define N "WndSubclassExample"
Name ${N}
OutFile "$%temp%\${N}.exe"
ShowInstDetails show
LicenseText "<<< hover over the icon, or click it$\n>>> or move this window with the minimize button!!!"
Caption "${N}"
SubCaption 0 " "
page license "" licshow
var MainWndSubProc
var IconSubProc
var hLic
var IconAnim
var firstbrandscroll
Function .onInit
!if 0
FindWindow $0 dbgviewClass
SendMessage $0 ${WM_COMMAND} 40020 0
System::Call user32::SetForegroundWindow(i$0)
!endif
FunctionEnd
Function IconSubProc
#System::Call 'kernel32::OutputDebugString(t "IconSubProc: $1 $2 $3 $4 $\n")'
${If} $2 = ${WM_NCHITTEST}
${If} $IconAnim = 0
System::Call 'user32::SetTimer(i $HWNDPARENT,i 1,i 50,i0)'
StrCpy $IconAnim 1
System::Call 'user32::SetTimer(i $1,i 1,i 50,i0)'
${EndIf}
${WndSubClass_Ret} 1
${ElseIf} $2 = ${WM_TIMER}
System::Call *(i,i,i,i)i.r0
System::Call user32::GetWindowRect(i$1,i$0)
FindWindow $2 "#32770" "" $HWNDPARENT
System::Call 'user32::MapWindowPoints(i 0,i $2,i $0,i 2)'
System::Call '*$0(i.r5,i.r6)'
IntOp $IconAnim $IconAnim + 1
IntOp $9 $IconAnim % 2
${If} $9 = 1
IntOp $6 $6 + 2
${Else}
IntOp $6 $6 - 2
${EndIf}
${If} $IconAnim > 10
System::Call user32::KillTimer(i$1,i1)
call ResetLicTick
StrCpy $IconAnim 0
${EndIf}
System::Call 'user32::SetWindowPos(i $1,i 0,i $5,i $6,i0,i0,i 1)'
System::Free $0
${ElseIf} $2 = ${WM_LBUTTONUP}
${If} $hLic = 0
quit
${EndIf}
call ResetLicTick
StrCpy $0 $hLic
StrCpy $hLic 0
SendMessage $0 ${WM_SETTEXT} 0 "STR:You disabled the ticker, don't click the icon again"
${EndIf}
FunctionEnd
Function MainWndSubProc
#System::Call 'kernel32::OutputDebugString(t "MainWndSubProc: $1 $2 $3 $4 $\n")'
${If} $2 = ${WM_NCHITTEST}
${WndSubClass_CallNextWndProc} $MainWndSubProc "" "" "" "" ;result in $0
${IfThen} $0 = 8 ${|} StrCpy $0 2 ${|} ;take over minimize btn and fake as HTCAPTION
${WndSubClass_Ret} $0
${ElseIf} $2 = ${WM_TIMER}
${If} $3 == 1
System::Call kernel32::GetTickCount()i.r0
SendMessage $hLic ${WM_SETTEXT} 0 "STR:Tick=$0"
${ElseIf} $3 == 2
GetDlgItem $0 $HWNDPARENT 0x404
System::Call 'user32::SendMessage(i $0,i ${WM_GETTEXT},i 99,t.r1)'
${If} $firstbrandscroll != 1
StrCpy $firstbrandscroll 1
StrCpy $1 "$1... "
${EndIf}
StrCpy $2 $1 1
StrCpy $1 "$1$2" "" 1
SendMessage $0 ${WM_SETTEXT} 0 "STR:$1"
${EndIf}
${EndIf}
FunctionEnd
Function ResetLicTick
System::Call user32::KillTimer(i$HWNDPARENT,i1)
SendMessage $hLic ${WM_SETTEXT} 0 "STR:Tick=?"
FunctionEnd
Function licshow
${WndSubclass_Subclass} $HWNDPARENT MainWndSubProc $MainWndSubProc $MainWndSubProc
CreateFont $9 Arial 22
FindWindow $0 "#32770" "" $HWNDPARENT
GetDlgItem $hLic $0 1000
GetDlgItem $1 $0 0x407
${WndSubclass_Subclass} $1 IconSubProc $IconSubProc $IconSubProc
SendMessage $hLic ${WM_SETFONT} $9 0
call ResetLicTick
System::Call 'user32::SetTimer(i $HWNDPARENT,i 2,i 250,i0)'
FunctionEnd
Section
SectionEnd

Answer 1

If you just Google "NSIS v2.42 and later required!" the first result should be this forum thread and it says you can fix it by adding this to the top of your .nsi:
!if "${NSIS_CHAR_SIZE}" = 1
!define __WNDSUBCLASS_NSISVEROK
!endif
!include "WndSubclass.nsh"