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I check this snippet:

https://www.autoitscript.com/wiki/Snippets_(_GUI_)#GUI_With_Scrollable_TabItem

Modified them and I refactored. That's because I needed to adapt it to my needs (I'll write later).
I thought I understood how it works.
But I was wrong.

 

This is my example which is showing what I want to achieve.

#include <AutoItConstants.au3>
#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiScrollBars.au3>
#include <GUIScrollbars_Ex.au3>
#include <StringConstants.au3>
#include <StructureConstants.au3>
#include <WindowsConstants.au3>

GUIRegisterMsg($WM_VSCROLL, WM_VSCROLL)

_Example()

Func _Example()
    Local $i_Count = 30
    Local $a_Options_List[$i_Count + 1]
    $a_Options_List[0] = $i_Count
    For $i = 1 To $i_Count
        $a_Options_List[$i] = 'Test #' & $i
    Next
    ConsoleWrite("- " & _my_gui_Wybierz('Testing', $a_Options_List) & @CRLF)
EndFunc   ;==>_Example

Func _my_gui_Wybierz($s_Description, $a_Options_List = "", $i_Left = Default, $i_Top = Default, $i_Width = Default, $hWnd_Parent = 0)
;~  WinSetOnTop($ACROBAT_TITLE, "", $WINDOWS_NOONTOP )
    If $i_Left = Default Then $i_Left = -1
    If $i_Top = Default Then $i_Top = -1
    If $i_Width = Default Then $i_Width = 400

    #Region _my_gui_Wybierz - GUI Creation
    Local $i_Height = 600
    Local $hWND_DateForm = GUICreate("", $i_Width, $i_Height, $i_Left, $i_Top, BitOR(0, $WS_SIZEBOX), -1, $hWnd_Parent)
    WinSetOnTop($hWND_DateForm, "", $WINDOWS_ONTOP)

    Local $hChild = GUICreate("Scroll area", $i_Width - 15, $i_Height - 40, 0, 0, $WS_POPUP, $WS_EX_MDICHILD, $hWND_DateForm)
    _GUIScrollBars_Init($hChild, -1)
    _GUIScrollBars_ShowScrollBar($hChild, $SB_HORZ, False)
    _GUIScrollBars_ShowScrollBar($hChild, $SB_VERT, True)
;~  _GUIScrollBars_SetScrollRange($hChild, $SB_VERT, 3, 30)
    GUICtrlCreateLabel("", 10, 7, $i_Width - 45, 80)
    Local $id_Label1 = GUICtrlCreateLabel("", 10, 7 + 5, $i_Width - 45, 80 - 5)
    GUICtrlSetBkColor(-1, 0x88AABB)

    Local $a_List_of_Button_ID[$a_Options_List[0] + 1]
    For $IDX_Item = 1 To $a_Options_List[0]
        If $IDX_Item > 0 And $IDX_Item < 10 Then
            $a_List_of_Button_ID[$IDX_Item] = GUICtrlCreateButton( _
                    $IDX_Item & ". " & $a_Options_List[$IDX_Item], _
                    10, 90 + ($IDX_Item - 1) * 21, $i_Width - 45, 20, BitOR($BS_LEFT, $WS_GROUP))
        Else
            $a_List_of_Button_ID[$IDX_Item] = GUICtrlCreateButton( _
                    Chr(Asc('A') + $IDX_Item - 10) & ". " & $a_Options_List[$IDX_Item], _
                    10, 90 + ($IDX_Item - 1) * 21, $i_Width - 45, 20, BitOR($BS_LEFT, $WS_GROUP))
        EndIf
    Next

    Local $temp_var = $a_Options_List[0]
    Local $a_accelerators[($temp_var * 2) + 1][2]

    Local $i_Accelerators_Counter = 0
    Local $i_Accelerator_Char1 = ''
    Local $i_Accelerator_Char2 = ''
    For $IDX_Item = 1 To $a_Options_List[0]
        If $IDX_Item > 9 Then
            $i_Accelerator_Char1 = Chr(Asc('A') + $IDX_Item - 10)
            $i_Accelerator_Char2 = Chr(Asc('a') + $IDX_Item - 10)
        Else
            $i_Accelerator_Char1 = "{NUMPAD" & $IDX_Item & "}"         ;Chr(48 + $IDX_Item)
            $i_Accelerator_Char2 = $IDX_Item
        EndIf
        $a_accelerators[($IDX_Item * 2) - 1][0] = $i_Accelerator_Char1
        $a_accelerators[($IDX_Item * 2) - 1][1] = $a_List_of_Button_ID[$IDX_Item]

        $a_accelerators[($IDX_Item * 2) - 1 + 1][0] = $i_Accelerator_Char2
        $a_accelerators[($IDX_Item * 2) - 1 + 1][1] = $a_List_of_Button_ID[$IDX_Item]

        $i_Accelerators_Counter += 2
    Next
    $a_accelerators[0][0] = $i_Accelerators_Counter
    GUISetAccelerators($a_accelerators, $hChild)
    GUICtrlSetData($id_Label1, $s_Description)

    GUISetState(@SW_SHOW, $hWND_DateForm)
    GUISetState(@SW_SHOW, $hChild)
    #EndRegion _my_gui_Wybierz - GUI Creation

    #Region - _my_gui_Wybierz - Handling messages
    Local $i_Selected_item = 0
    Local $v_Return_Value = ""
    Local $a_GUI_Messages
    While 1
        $a_GUI_Messages = GUIGetMsg($GUI_EVENT_ARRAY)
        If $a_GUI_Messages[0] = $GUI_EVENT_NONE Then
            ; do nothing
        ElseIf $a_GUI_Messages[1] = $hWND_DateForm Then
            If $a_GUI_Messages[0] = $GUI_EVENT_CLOSE Then ExitLoop
        ElseIf $a_GUI_Messages[1] <> $hChild Then
            ; ....
        Else
            For $IDX_Check = 1 To $a_Options_List[0]
                If $a_List_of_Button_ID[$IDX_Check] = $a_GUI_Messages[0] Then
                    $v_Return_Value = GUICtrlRead($a_List_of_Button_ID[$IDX_Check])
                    $i_Selected_item = $IDX_Check
                    $v_Return_Value = _RegExpFirstMatch($v_Return_Value, '.+?\. (.+)')
                    ExitLoop 2         ; exit from ForNext and also from WhileWend
                EndIf
            Next
        EndIf
    WEnd
    #EndRegion - _my_gui_Wybierz - Handling messages

    GUIDelete($hChild)
    GUIDelete($hWND_DateForm)

    Return SetError(0, $i_Selected_item, $v_Return_Value)

EndFunc   ;==>_my_gui_Wybierz

Func WM_VSCROLL($hWnd, $msg, $wParam, $lParam)
    #forceref $msg, $wParam, $lParam
    Local $nScrollCode = BitAND($wParam, 0x0000FFFF)
    Local $index = -1, $yChar, $yPos
    Local $Min, $Max, $Page, $Pos, $TrackPos

    For $x = 0 To UBound($aSB_WindowInfo) - 1
        If $aSB_WindowInfo[$x][0] = $hWnd Then
            $index = $x
            $yChar = $aSB_WindowInfo[$index][3]
            ExitLoop
        EndIf
    Next
    If $index = -1 Then Return 0

    ; Get all the vertial scroll bar information
    Local $tSCROLLINFO = _GUIScrollBars_GetScrollInfoEx($hWnd, $SB_VERT)
    $Min = DllStructGetData($tSCROLLINFO, "nMin")
    $Max = DllStructGetData($tSCROLLINFO, "nMax")
    $Page = DllStructGetData($tSCROLLINFO, "nPage")
    ; Save the position for comparison later on
    $yPos = DllStructGetData($tSCROLLINFO, "nPos")
    $Pos = $yPos
    $TrackPos = DllStructGetData($tSCROLLINFO, "nTrackPos")

    Switch $nScrollCode
        Case $SB_TOP ; user clicked the HOME keyboard key
            DllStructSetData($tSCROLLINFO, "nPos", $Min)

        Case $SB_BOTTOM ; user clicked the END keyboard key
            DllStructSetData($tSCROLLINFO, "nPos", $Max)

        Case $SB_LINEUP ; user clicked the top arrow
            DllStructSetData($tSCROLLINFO, "nPos", $Pos - 1)

        Case $SB_LINEDOWN ; user clicked the bottom arrow
            DllStructSetData($tSCROLLINFO, "nPos", $Pos + 1)

        Case $SB_PAGEUP ; user clicked the scroll bar shaft above the scroll box
            DllStructSetData($tSCROLLINFO, "nPos", $Pos - $Page)

        Case $SB_PAGEDOWN ; user clicked the scroll bar shaft below the scroll box
            DllStructSetData($tSCROLLINFO, "nPos", $Pos + $Page)

        Case $SB_THUMBTRACK ; user dragged the scroll box
            DllStructSetData($tSCROLLINFO, "nPos", $TrackPos)
    EndSwitch

    ; Set the position and then retrieve it.  Due to adjustments
    ; by Windows it may not be the same as the value set.

    DllStructSetData($tSCROLLINFO, "fMask", $SIF_POS)
    _GUIScrollBars_SetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)
    _GUIScrollBars_GetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)
    ; If the position has changed, scroll the window and update it
    $Pos = DllStructGetData($tSCROLLINFO, "nPos")
    If ($Pos <> $yPos) Then
        _GUIScrollBars_ScrollWindow($hWnd, 0, $yChar * ($yPos - $Pos))
        $yPos = $Pos
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_VSCROLL

Func _RegExpFirstMatch($s_Data, $s_Pattern)
    Local $a_Results = StringRegExp($s_Data, $s_Pattern, $STR_REGEXPARRAYGLOBALMATCH)
    If @error Then Return SetError(@error, @extended, '')
    Return SetError(0, UBound($a_Results), $a_Results[0])
EndFunc   ;==>_RegExpFirstMatch

 

I have few problems with this code, and many question related to them.

Question 1:
How to make the Scrollbars to work ?
I mean to scroll buttons.

Question 2:
Do I must to ues Child Window, or is it possible to scroll buttons without using Child Window ?

Question 3:
Why after uncommenting this following line:

;~  _GUIScrollBars_SetScrollRange($hChild, $SB_VERT, 3, 30)

the ScrollBar disapears ?

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Signature last update: 2021-03-17

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Ha...
I was able to solve my problems with @Melba23  UDF:


Here is finall script:

#include <AutoItConstants.au3>
#include <Array.au3>
#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiScrollBars.au3>
#include <StringConstants.au3>
#include <StructureConstants.au3>
#include <WindowsConstants.au3>
#include "GUIScrollbars_Ex.au3"


_Example()

Func _Example()
    Local $i_Count = 30
    Local $a_Options_List[$i_Count + 1]
    $a_Options_List[0] = $i_Count
    For $i = 1 To $i_Count
        $a_Options_List[$i] = 'Test #' & $i
    Next
    ConsoleWrite("- " & _GUI__Choose_Options('Testing', $a_Options_List) & @CRLF)
EndFunc   ;==>_Example

Func _GUI__Choose_Options($s_Description, $a_Options_List = "", $i_GUI_Left = Default, $i_GUI_Top = Default, $i_GUI_Width = Default, $hWnd_Parent = 0)
    If $i_GUI_Left = Default Then $i_GUI_Left = -1
    If $i_GUI_Top = Default Then $i_GUI_Top = -1
    If $i_GUI_Width = Default Then $i_GUI_Width = 400

    Local $i_Left = 5 ; The distance of the labels from the left edge of the window
    Local $i_Label_Top = 10
    Local $i_Label_Height = 80
    Local $i_Button_Top = 5
    Local $i_Button_Width = $i_GUI_Width - 35
    Local $i_Button_Height = 25
    Local $i_Spacing = 1

    #Region _GUI__Choose_Options - GUI Creation
    Local $i_GUI_Height = 600
    Local $hWND_DateForm = GUICreate("", $i_GUI_Width, $i_GUI_Height, $i_GUI_Left, $i_GUI_Top, -1, -1, $hWnd_Parent)
    WinSetOnTop($hWND_DateForm, "", $WINDOWS_ONTOP)

    GUICtrlCreateLabel("", $i_Left, $i_Label_Top, $i_GUI_Width - 10, $i_Label_Height)
    GUICtrlSetBkColor(-1, 0x88AABB)
    Local $id_Label1 = GUICtrlCreateLabel("", $i_Left + 5, $i_Label_Top + 5, $i_GUI_Width - 15, $i_Label_Height - 5)
    GUICtrlSetBkColor(-1, 0x88AABB)

    Local $i_Child_top = $i_Label_Height + 15
    Local $hChild = GUICreate("Scroll area", $i_GUI_Width - 5, $i_GUI_Height - $i_Label_Height - 30, 0, $i_Child_top, $WS_POPUP, $WS_EX_MDICHILD, $hWND_DateForm)

    Local $i_bottom
    Local $a_List_of_Button_ID[$a_Options_List[0] + 1]
    Local $a_List_of_Dummy_ID = $a_List_of_Button_ID
    For $IDX_Item = 1 To $a_Options_List[0]
        GUISwitch($hWND_DateForm)
        $a_List_of_Dummy_ID[$IDX_Item] = GUICtrlCreateDummy()
        If $IDX_Item > 0 And $IDX_Item < 10 Then
            GUISwitch($hChild)
            $a_List_of_Button_ID[$IDX_Item] = GUICtrlCreateButton( _
                    $IDX_Item & ". " & $a_Options_List[$IDX_Item], _
                    $i_Left, $i_Button_Top, $i_Button_Width, $i_Button_Height, BitOR($BS_LEFT, $WS_GROUP))
        Else
            GUISwitch($hChild)
            $a_List_of_Button_ID[$IDX_Item] = GUICtrlCreateButton( _
                    Chr(Asc('A') + $IDX_Item - 10) & ". " & $a_Options_List[$IDX_Item], _
                    $i_Left, $i_Button_Top, $i_Button_Width, $i_Button_Height, BitOR($BS_LEFT, $WS_GROUP))
        EndIf
        $i_bottom = $i_Button_Top + $i_Button_Height ; Bottom edge of the last Button
        $i_Button_Top = $i_bottom + $i_Spacing ; Top of next Button
    Next

    Local $iMaxScrollHeight = $i_Button_Top
    _GUIScrollbars_Generate($hChild, 0, $iMaxScrollHeight)

    Local $temp_var = $a_Options_List[0]
    Local $a_accelerators_for_Buttons[($temp_var * 2) + 1][2]
    Local $a_accelerators_for_Dummy = $a_accelerators_for_Buttons

    Local $i_Accelerators_Counter = 0
    Local $i_Accelerator_Upper_Char = ''
    Local $i_Accelerator_Lower_Char = ''
    For $IDX_Item = 1 To $a_Options_List[0]
        If $IDX_Item > 9 Then
            $i_Accelerator_Upper_Char = Chr(Asc('A') + $IDX_Item - 10)
            $i_Accelerator_Lower_Char = Chr(Asc('a') + $IDX_Item - 10)
        Else
            $i_Accelerator_Upper_Char = "{NUMPAD" & $IDX_Item & "}"
            $i_Accelerator_Lower_Char = $IDX_Item
        EndIf
        $a_accelerators_for_Buttons[($IDX_Item * 2) - 1][0] = $i_Accelerator_Lower_Char
        $a_accelerators_for_Buttons[($IDX_Item * 2) - 1][1] = $a_List_of_Button_ID[$IDX_Item]
        $a_accelerators_for_Buttons[($IDX_Item * 2)][0] = $i_Accelerator_Upper_Char
        $a_accelerators_for_Buttons[($IDX_Item * 2)][1] = $a_List_of_Button_ID[$IDX_Item]

        $a_accelerators_for_Dummy[($IDX_Item * 2) - 1][0] = $i_Accelerator_Lower_Char
        $a_accelerators_for_Dummy[($IDX_Item * 2) - 1][1] = $a_List_of_Dummy_ID[$IDX_Item]
        $a_accelerators_for_Dummy[($IDX_Item * 2)][0] = $i_Accelerator_Upper_Char
        $a_accelerators_for_Dummy[($IDX_Item * 2)][1] = $a_List_of_Dummy_ID[$IDX_Item]

        $i_Accelerators_Counter += 2
    Next
    $a_accelerators_for_Buttons[0][0] = $i_Accelerators_Counter
    $a_accelerators_for_Dummy[0][0] = $i_Accelerators_Counter
;~  _ArrayDisplay($a_accelerators_for_Buttons, '$a_accelerators_for_Buttons')
;~  _ArrayDisplay($a_accelerators_for_Dummy, '$a_accelerators_for_Dummy')

    ; Accelerators must be set for both Main and Child window because when you drag Main window then Accelerators for Child window will not be fired
    GUISetAccelerators($a_accelerators_for_Buttons, $hChild)
    GUISetAccelerators($a_accelerators_for_Dummy, $hWND_DateForm)
    GUICtrlSetData($id_Label1, $s_Description)

    GUISetState(@SW_SHOW, $hWND_DateForm)
    GUISetState(@SW_SHOW, $hChild)
    #EndRegion _GUI__Choose_Options - GUI Creation

    #Region - _GUI__Choose_Options - Handling messages
    Local $i_Selected_item = 0
    Local $v_Return_Value = ""
    Local $a_GUI_Messages
    While 1
        $a_GUI_Messages = GUIGetMsg($GUI_EVENT_ARRAY)
        If $a_GUI_Messages[0] = $GUI_EVENT_NONE Then
            ; do nothing
        ElseIf $a_GUI_Messages[1] = $hWND_DateForm And $a_GUI_Messages[0] = $GUI_EVENT_CLOSE Then
            ExitLoop
;~      ElseIf $a_GUI_Messages[1] <> $hChild And $a_GUI_Messages[1] <> $hWND_DateForm Then
;~          ; ....
        Else
            For $IDX_Check = 1 To $a_Options_List[0]
                If $a_List_of_Button_ID[$IDX_Check] = $a_GUI_Messages[0] Or $a_List_of_Dummy_ID[$IDX_Check] = $a_GUI_Messages[0] Then
                    $v_Return_Value = GUICtrlRead($a_List_of_Button_ID[$IDX_Check])
                    $i_Selected_item = $IDX_Check
                    $v_Return_Value = _RegExpFirstMatch($v_Return_Value, '.+?\. (.+)')
                    ExitLoop 2         ; exit from ForNext and also from WhileWend
                EndIf
            Next
        EndIf
    WEnd
    #EndRegion - _GUI__Choose_Options - Handling messages

    GUIDelete($hChild)
    GUIDelete($hWND_DateForm)

    Return SetError(0, $i_Selected_item, $v_Return_Value)

EndFunc   ;==>_GUI__Choose_Options

Func _RegExpFirstMatch($s_Data, $s_Pattern)
    Local $a_Results = StringRegExp($s_Data, $s_Pattern, $STR_REGEXPARRAYGLOBALMATCH)
    If @error Then Return SetError(@error, @extended, '')
    Return SetError(0, UBound($a_Results), $a_Results[0])
EndFunc   ;==>_RegExpFirstMatch

 

Signature beginning:
Please remember: "AutoIt".....  Wondering who uses AutoIt and what it can be used for ?
* GHAPI UDF - modest beginning - communication with GitHub REST API Forum Rules *
Include Dependency Tree (Tool for analyzing script relations)
ADO.au3 UDF     POP3.au3 UDF     XML.au3 UDF    How to use IE.au3  UDF with  AutoIt v3.3.14.x  for other useful stuff click the following button

Spoiler

Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAP * WinSCP UDF * GHAPI UDF - modest begining - comunication with GitHub REST APIErrorLog.au3 UDF - A logging Library *

My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 UDF * ADO.au3 UDF SMTP Mailer UDF * Dual Monitor resolution detection * * 2GUI on Dual Monitor System * _SciLexer.au3 UDF * SciTE - Lexer for console pane

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Good coding practices in AutoIt * 

OpenOffice/LibreOffice/XLS Related: WriterDemo.au3 * XLS/MDB from scratch with ADOX

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * IE in TaskSchedulerIE Embedded Control Versioning (use IE9+ and HTML5 in a GUI) *

PDF Related:How to get reference to PDF object embeded in IE *

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

I also encourage you to check awesome @trancexx code:  * Create COM objects from modules without any demand on user to register anything. * Another COM object registering stuffOnHungApp handlerAvoid "AutoIt Error" message box in unknown errors  * HTML editor

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

Signature last update: 2021-03-17

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      Hey guys!
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