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Array Element Max Length (DisplayArray)

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In attempting to debug a related issue, I added a _DisplayArray line to see what was being pulled into my array.

If Not _FileReadToArray($FullNameArray[$j],$FileLineArray) Then
MsgBox(0,'Script Stopped - Error','Error reading' & $FullNameArray[$j] & 'to Array.')

It appears my array is being populated - However, in the DisplayArray window, the strings were cut off after a certain number of characters. In the HelpFile, it states, "Maximum string length is 2147483647 characters (but keep in mind that no line in an AutoIt script can exceed 4095 characters.)" The lines of my array should be all <1500 characters, which is significantly shy of the 2 trillion.

  • Is there a different maximum string length within an array element?
  • Is this a limitation on the DisplayArray window?
There seems to be a lack of documentation in the helpfile - Whatever the case, it would be a welcome addition! :)



Edit: String length in array is about 1500 characters max. And if it is related... The array had about 1100 elements (single dimension)

Edited by Zoreal

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From MSDN:

"If the structure receives item attributes, pszText is a pointer to a buffer that receives the item text. Note that although the list-view control allows any length string to be stored as item text, only the first 260 TCHARs are displayed"

So it looks as if you are stuck with that limit as it is a Windows, not an AutoIt, limitation. :(



And some code showing the limit in action:

#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
#include <GuiListView.au3>

$sText = "0123456789012345"
For $i = 1 To 4
    $sText &= $sText
$sText &= "**********"
ConsoleWrite(StringLen($sText) & @CRLF)

$hGUI = GUICreate("Test", 500, 500)

$cLV = GUICtrlCreateListView(" ", 10, 10, 480, 200, BitOr($LVS_SHOWSELALWAYS, $LVS_SINGLESEL, $WS_HSCROLL))
_GUICtrlListView_SetColumnWidth($cLV, 0, 2500)
GUICtrlCreateListViewItem($sText, $cLV)


While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
Edited by Melba23
Added code

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:


ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area


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Great, thanks! - So it is indeed simply the listview window's limitation. :)

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