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Strange "Variable used without being declared" error

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Why i'm getting "Variable used without being declared" error in this script?

>Running:(3.3.14.0):C:\Program Files (x86)\AutoIt3\autoit3.exe "E:\Auto-it scripts\test.au3"    
--> Press Ctrl+Alt+Break to Restart or Ctrl+Break to Stop
* click *
$sMode = 
$sSelection = Previous
$sMode = 
"E:\Program Files\Auto-it scripts\test_512.au3" (36) : ==> Variable used without being declared.:
ConsoleWrite("$sSelection = " & $sSelection & @CRLF)
ConsoleWrite("$sSelection = " & ^ ERROR
->19:57:41 AutoIt3.exe ended.rc:1

Reproducer script:

#include <StructureConstants.au3>
#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <ListViewConstants.au3>
#include <WindowsConstants.au3>
;
Global $hListView1, $sMode = ""
;
#Region ### START Koda GUI section ### Form=
$Form1 = GUICreate("Form1", 624, 437, 192, 132)
$Group1 = GUICtrlCreateGroup("Click Here", 168, 128, 281, 161)
$ListView1 = GUICtrlCreateListView("", 184, 160, 250, 118)
GUICtrlCreateGroup("", -99, -99, 1, 1)
GUIRegisterMsg( $WM_NOTIFY, "WM_NOTIFY" )
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###
$hListView1 = GUICtrlGetHandle($ListView1)
While 1
    $nMsg = GUIGetMsg($Form1)
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

    EndSwitch
WEnd
;------------------------------------------------------------------------------------------
Func SubFunction($sSelection = "Full", $sSearch = "")
    Switch $sMode
        Case ""
            ;
        Case Else
            $sSelection = $sMode
            $sMode = ""
    EndSwitch
    ConsoleWrite("$sMode = " & $sMode & @CRLF)
    ConsoleWrite("$sSelection = " & $sSelection & @CRLF)
EndFunc
;------------------------------------------------------------------------------------------
Func WM_NOTIFY( $hWnd, $iMsg, $wParam, $lParam )
    Local Static $tText = DllStructCreate( "wchar[512]" )
    Local Static $pText = DllStructGetPtr( $tText )

    Local $tNMHDR, $hWndFrom, $iCode, $tInfo
    $tNMHDR = DllStructCreate( $tagNMHDR, $lParam )
    $hWndFrom = HWnd( DllStructGetData( $tNMHDR, "hWndFrom" ) )
    $iCode = DllStructGetData( $tNMHDR, "Code" )

    Switch $hWndFrom
        Case $hListView1
            Switch $iCode
                Case $NM_CLICK
                    $sMode = 'Previous'
                    AdlibRegister("SubFunction",88)
                    ConsoleWrite("* click *" & @CRLF)

            EndSwitch
    EndSwitch

    Return $GUI_RUNDEFMSG
EndFunc
;------------------------------------------------------------------------------------------

 

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Because you can't use a function with parameters in an AdLib function. Those parameters are ignored as if they don't exist, but will cause an error if you try to use Local inside the function.


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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:>o:):sweating:

 

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forgotten to ask: why function make output twice and only on second crush?

WM_NOTYFY work:
;----------------------
* click *
;----------------------
1-st output:
;----------------------
$sMode = 
$sSelection = Previous
;----------------------
2-nd output:
;----------------------
$sMode =

 

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Because the first time you use the function $sMode contains "Previous" and and then you blank it out. So the second time into the function, $sSelection isn't going to be used so it's undeclared.


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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Thanks!

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