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poila

Does ListView sorting sort integers correctly?

3 posts in this topic

#1 ·  Posted (edited)

I was reading the Helpfile on both GUICtrlRegisterListViewSort and _GUICtrlListView_SimpleSort, and after running my script, I was initially satisfied with the way columns are sorted when the user clicks on the column header.

But at certain occasions, clicking on the column header to sort numbers - integers in particular - seem to have some unexpected behaviour.

I cannot verify if it is due to the way I wrote the script, or because the functions used in AutoIt to sort numbers intentionally work the way they do.

Example:

Column ID | Item ID | Item Name | Date

1 | ID_1 | One | 14/05/2014

2 | ID_2 | Two| 14/05/2014

3 | ID_3 | Three| 14/05/2014

10 | ID_4 | Four| 14/05/2014

9 | ID_5 | Five| 14/05/2014

27 | ID_6 | Siz| 15/05/2014

When the user clicks Column ID, logically the order of ascending sorting would look like this:

1, 2, 3, 9, 10, 27

But what I got is like this:

1, 10, 2, 27, 3, 9

Does anyone know the reason behind the way it is sorted this way?

How then do I get the columns to be sorted correctly when the user clicks the column header?

(I did read across other related threads like  and )

I attached my codes here to see if I might write them wrongly.

My code for generating ListView:

$inventoryList = GUICtrlCreateListView("ID|item id|item name| Date", 45, 140, expandGUIX(750), expandGUIY(450), $LVS_REPORT, BitOR($LVS_EX_FULLROWSELECT, $WS_EX_CLIENTEDGE))
_GUICtrlListView_SetColumnWidth(-1, 3, 651)
$hInventoryList = GUICtrlGetHandle($inventoryList)
For $i = 0 To 3
    _GUICtrlListView_SetColumnWidth($inventoryList, $i, $LVSCW_AUTOSIZE_USEHEADER)
Next

My code for auto-resizing columns:

Func resizeColumns($hWnd, $listView, $iColumns, $iGUI_Width, $iGUI_Height)
    ; Check top index - if not 0 then we have a scroll bar so increase ListView width
    Local $iScroll_Allowance
    If _GUICtrlListView_GetTopIndex($listView) > 0 Then
        $iScroll_Allowance = 17
    EndIf

    ; Determine ListView width
    Local $iLV_Width = $iScroll_Allowance
    Local $iData_Width, $iHeader_Width
    Local $i = 0
    For $i = 0 To $iColumns - 1
        ; Size column to fit header
        _GUICtrlListView_SetColumnWidth($listView, $i, $LVSCW_AUTOSIZE_USEHEADER)
        $iHeader_Width = _GUICtrlListView_GetColumnWidth($listView, $i)
        ; Now size column to fit data
        _GUICtrlListView_SetColumnWidth($listView, $i, $LVSCW_AUTOSIZE)
        $iData_Width = _GUICtrlListView_GetColumnWidth($listView, $i)
        ; If header is wider, reset width
        If $iHeader_Width > $iData_Width Then
            _GUICtrlListView_SetColumnWidth($listView, $i, $iHeader_Width)
            $iLV_Width += $iHeader_Width
        Else
            $iLV_Width += $iData_Width
        EndIf
    Next

    ; Resize ListView and GUI to fit data
    ControlMove($hWnd, "", $listView, 10, 10, $iLV_Width + 10, $iGUI_Height - 20) ; Add 10 for internal ListView borders
EndFunc   ;==>resizeColumns

My code for locking users from resizing columns after auto-resize:

Func _WM_NOTIFY($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam

    ; Get details of message
    Local $tNMHEADER = DllStructCreate($tagNMHEADER, $lParam)
    ; Look for header resize code
    $iCode = DllStructGetData($tNMHEADER, "Code")
    Switch $iCode
        Case $HDN_BEGINTRACKW
            ; Prevent resizing
            Return True
        Case $LVN_COLUMNCLICK
            ; Sort column
            $tInfo = DllStructCreate($tagNMLISTVIEW, $lParam)
            $iCol = DllStructGetData($tInfo, "SubItem")
            _GUICtrlListView_SimpleSort($cListView, $g_bSortSense, $iCol)
    EndSwitch

    Return $__LISTVIEWCONSTANT_GUI_RUNDEFMSG
EndFunc   ;==>_WM_NOTIFY
Edited by poila

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It's called a lexical or lexicographical sort, it sorts by the character values, not the numeric values.


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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#3 ·  Posted (edited)

Hi BrewManNH,

Thanks for the tip. I just did a search on the forums and came across this thread that's related to lexical sort ('?do=embed' frameborder='0' data-embedContent>>).

(Gonna add 'lexical' to my vocab, sounds new to me ._. )

Not sure of how to integrate the UDF (shown inside the link) into a ListView sort, since the link I shared is for sorting arrays instead of ListView.

Any ideas or has anyone else did proper number sorting before for ListView?

Edited by poila

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Default drawing of item $iItem = DllStructGetData( $tNMLVCUSTOMDRAW, "dwItemSpec" ) Return $CDRF_NOTIFYSUBITEMDRAW ; Stage 3 will be carried out ; Stage 3 Case BitOR( $CDDS_ITEMPREPAINT, $CDDS_SUBITEM ) ; Before a subitem is painted Return $CDRF_NOTIFYPOSTPAINT ; Stage 4 will be carried out ; Stage 4 Case BitOR( $CDDS_ITEMPOSTPAINT, $CDDS_SUBITEM ) ; After a subitem has been painted If DllStructGetData( $tNMLVCustomDraw, "iSubItem" ) = $iSubItem Then Local $hDC = DllStructGetData( $tNMLVCUSTOMDRAW, "hdc" ) ; Device context $aRect = _GUICtrlListView_GetSubItemRect( $hListView, $iItem, $iSubItem ) ; Subitem rectangle $aRect[2] = $aRect[0] + _GUICtrlListView_GetColumnWidth( $hListView, $iSubItem ) DllStructSetData( $tRect, "Left", $aRect[0]+4 ) DllStructSetData( $tRect, "Top", $aRect[1] ) DllStructSetData( $tRect, "Right", $aRect[2] ) DllStructSetData( $tRect, "Bottom", $aRect[3] ) _WinAPI_FillRect( $hDC, $tRect, $hBrush ) ; Fill subitem background _WinAPI_SetTextColor( $hDC, 0x000000 ) ; Set black text color DllStructSetData( $tRect, "Left", DllStructGetData( $tRect, "Left" ) + 2 ) ; Adjust rectangle If $bNotXP Then DllStructSetData( $tRect, "Top", DllStructGetData( $tRect, "Top" ) + 2 ) _WinAPI_DrawText( $hDC, StringSplit($RowsArray[$iItem+2],$TabSep)[$iSubItem+1], $tRect, $DT_WORD_ELLIPSIS ) ; Draw text EndIf Return $CDRF_NEWFONT ; $CDRF_NEWFONT must be returned after changing font or colors EndSwitch Case $NM_CLICK If Not $bComboDoNotOpen And Not $bComboOpenOnDoubleClick And $iItem > -1 And $iSubItem > -1 Then _ GUICtrlSendToDummy( $idComboOpen ) ; Send message to open ComboBox Case $NM_DBLCLK If $bComboOpenOnDoubleClick And $iItem > -1 And $iSubItem > -1 Then _ GUICtrlSendToDummy( $idComboOpen ) ; Send message to open ComboBox EndSwitch EndSwitch Return $GUI_RUNDEFMSG EndFunc ; Handle ListView messages related to ComboBox Func ListViewCallback( $hWnd, $iMsg, $wParam, $lParam, $iSubclassId, $pData ) Switch $iMsg ; Open ComboBox on Enter key Case $WM_GETDLGCODE Switch $wParam Case $VK_RETURN If Not $bComboDoNotOpen And $bComboOpenOnEnter And $iItem > -1 And $iSubItem > -1 Then _GUICtrlListView_SetItemSelected( $hListView, -1, False ) _GUICtrlListView_SetItemSelected( $hListView, $iItem ) GUICtrlSendToDummy( $idComboOpen ) EndIf EndSwitch ; Manage multiple selections ; Prevent ComboBox from opening ; Manage keyboard events Case $WM_KEYDOWN Switch $wParam Case $VK_SHIFT, $VK_CONTROL $bComboDoNotOpen = True ; Manage keyboard events Case $VK_LEFT If Not $bComboDoNotOpen And $iSubItem > 0 Then $iSubItem -= 1 _GUICtrlListView_RedrawItems( $hListView, $iItem, $iItem ) Case $VK_RIGHT If Not $bComboDoNotOpen And $iSubItem < _GUICtrlListView_GetColumnCount( $hListView ) - 1 Then $iSubItem += 1 _GUICtrlListView_RedrawItems( $hListView, $iItem, $iItem ) Case $VK_SPACE If Not $bComboDoNotOpen And $bComboOpenOnSpace And $iItem > -1 And $iSubItem > -1 Then _GUICtrlListView_SetItemSelected( $hListView, -1, False ) GUICtrlSendToDummy( $idComboOpen ) EndIf EndSwitch Case $WM_KEYUP Switch $wParam Case $VK_SHIFT, $VK_CONTROL $bComboDoNotOpen = False EndSwitch ; Left click in ListView ; Sent on single and double click ; Determines item/subitem of the cell that's clicked Case $WM_LBUTTONDOWN Local $aHit = _GUICtrlListView_SubItemHitTest( $hListView ) If $bComboOpen Then ; If another ComboBox is open then delete it _GUICtrlEDIT_Destroy( $hEdit ) GUICtrlSendToDummy( $idComboClose ) _WinAPI_SetFocus( $hListView ) EndIf If $aHit[0] > -1 And $aHit[1] > -1 Then $iItem = $aHit[0] $iSubItem = $aHit[1] _GUICtrlListView_RedrawItems( $hListView, $iItem, $iItem ) EndIf ; Delete ComboBox on right click in ListView and on left ; or right click in non-client ListView area (Scrollbars). Case $WM_RBUTTONDOWN, $WM_NCLBUTTONDOWN, $WM_NCRBUTTONDOWN _GUICtrlEDIT_Destroy( $hEdit ) GUICtrlSendToDummy( $idComboClose ) _WinAPI_SetFocus( $hListView ) EndSwitch ; Call next function in subclass chain Return DllCall( "comctl32.dll", "lresult", "DefSubclassProc", "hwnd", $hWnd, "uint", $iMsg, "wparam", $wParam, "lparam", $lParam )[0] #forceref $iSubclassId, $pData EndFunc ; Messages from the Edit control of the ComboBox Func EditCallback( $hWnd, $iMsg, $wParam, $lParam, $iSubclassId, $pData ) Switch $iMsg ; Dialog codes Case $WM_GETDLGCODE Switch $wParam Case $VK_TAB ; Close GUICtrlSendToDummy( $idComboClose, True ) Case $VK_RETURN ; Accept and close GUICtrlSendToDummy( $idComboClose, True ) Case $VK_ESCAPE ; Close GUICtrlSendToDummy( $idComboClose, True ) _WinAPI_SetFocus( $hListView ) $bEditEscape = True EndSwitch ; Double click in Edit part of ComboBox Case $WM_LBUTTONDBLCLK Local $aPos = MouseGetWindowPos( $hListView ) If $aPos[0] > $aRect[0] And $aPos[0] < $aRect[2] And $aPos[1] > $aRect[1] And $aPos[1] < $aRect[1] + 20 Then _ GUICtrlSendToDummy( $idComboClose, True ) ; Accept and close EndSwitch ; Call next function in subclass chain Return DllCall( "comctl32.dll", "lresult", "DefSubclassProc", "hwnd", $hWnd, "uint", $iMsg, "wparam", $wParam, "lparam", $lParam )[0] #forceref $iSubclassId, $pData EndFunc ; Handle GUI messages related to ComboBox control Func GuiCallback( $hWnd, $iMsg, $wParam, $lParam, $iSubclassId, $pData ) Switch $iMsg ; Delete ComboBox on left or right mouse click in non-client GUI area and on GUI deactivate Case $WM_NCLBUTTONDOWN, $WM_NCRBUTTONDOWN, $WM_ACTIVATE _GUICtrlEDIT_Destroy( $hEdit ) GUICtrlSendToDummy( $idComboClose ) EndSwitch ; Call next function in subclass chain Return DllCall( "comctl32.dll", "lresult", "DefSubclassProc", "hwnd", $hWnd, "uint", $iMsg, "wparam", $wParam, "lparam", $lParam )[0] #forceref $iSubclassId, $pData EndFunc ; Get mouse pos relative to window Func MouseGetWindowPos( $hWindow ) Local $aPos = MouseGetPos() Local $tPoint = DllStructCreate( "int X;int Y" ) DllStructSetData( $tPoint, "X", $aPos[0] ) DllStructSetData( $tPoint, "Y", $aPos[1] ) _WinAPI_ScreenToClient( $hWindow, $tPoint ) $aPos[0] = DllStructGetData( $tPoint, "X" ) $aPos[1] = DllStructGetData( $tPoint, "Y" ) Return $aPos EndFunc  
       
       
       
      OnefolderWorking.zip
    • rootx
      By rootx
      I would like to hide the header in the listview, but I did not find anything in the help and in the forum, you have some advice, thanks.
    • Clemens
      By Clemens
      Hi there,
      I have a small hopefully quick fixable issue with reading information from my ListView:
      So in fact I just want to have information about which items are selected, so I'm using
      msgbox(0 , "return", GUICtrlRead($myListView), 1)
      but unfortunately it only returns me either the first item id or if this is not selected the second item id, or if this is not selected the third, etc. or 0 if none is selected.
      Anybody has an idea how to get the full picture of my >>multiple Items selected<< ListView?
      Thanks in advance!
      Clemens
    • FrancescoDiMuro
      By FrancescoDiMuro
      Hi guys! How are you? Hope you're fine
      I'm trying to use SQLite for managing some data, and, I would like to display my "retrieved" data, but I'm trying to do a select from 2 table, and seems to not work properly...
      What I'd like to do is retrieve data from 2 tables and display in a listview...
      I tried with:
      Local $aRisultato, $iRighe, $iColonne, $iRVal $iRval = _SQLite_GetTable2d($hDatabase, "SELECT * FROM Magazzino_Rockwell, Magazzino_Siemens;", $aRisultato, $iRighe, $iColonne) If $iRVal = $SQLITE_OK Then ;_SQLite_Display2DResult($aRisultato) _ArrayDisplay($aRisultato) EndIf ... but it displays a single record 41 times, and it does this thing for every record in the database...
      What do you need to help me?
      Thanks  

      EDIT:
      Managed with a double If and double query like this:
       
      $iRval = _SQLite_GetTable2d($hDatabase, "SELECT * FROM Magazzino_Rockwell;", $aRisultato, $iRighe, $iColonne) If $iRVal = $SQLITE_OK Then Local $aRisultatoRockwell = $aRisultato $iRval = _SQLite_GetTable2d($hDatabase, "SELECT * FROM Magazzino_Siemens;", $aRisultato, $iRighe, $iColonne) If $iRVal = $SQLITE_OK Then _ArrayConcatenate($aRisultato, $aRisultatoRockwell) Local $i, $sRiga, $s_LV_Item For $i = 1 To Ubound($aRisultato) - 1 $sRiga = $aRisultato[$i][0] & "|" & _ $aRisultato[$i][1] & "|" & _ $aRisultato[$i][2] & "|" & _ $aRisultato[$i][3] & "|" & _ $aRisultato[$i][4] & "|" & _ $aRisultato[$i][5] & "|" & _ $aRisultato[$i][6] & "|" & _ $aRisultato[$i][7] & "|" & _ $aRisultato[$i][8] & "|" & _ $aRisultato[$i][9] & "|" & _ $aRisultato[$i][10] & "|" & _ $aRisultato[$i][11] $s_LV_Item = GUICtrlCreateListViewItem($sRiga, $lv_Lista) Next And so, the listview is created
      If anyone has another more efficient way, I'm here Thanks guys