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PcExpert

Limiting characters per line in an edit control

8 posts in this topic

#1 ·  Posted (edited)

Hi all,

How to limit the amount of characters that can be entered into an edit control per line?

Thanks!

Edited by PcExpert

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anybody?

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Hi all,

How to limit the amount of characters that can be entered into an edit control per line?

Thanks!

Something like this might do what you want.

#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
Const $MAXLINELENGTH = 10

#Region ### START Koda GUI section ### Form=
$Form3 = GUICreate("Form3", 413, 298, 303, 219)
$Edit1 = GUICtrlCreateEdit("", 88, 16, 233, 193)
GUICtrlSetData(-1, "Edit1")
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###
Global $eText
Global $hEd = GUICtrlGetHandle($Edit1)
Global $checkLines = False
GUIRegisterMsg($WM_COMMAND, "DB_WM_COMMAND")
While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

    EndSwitch
    
    If $checkLines Then
        TestEdit()
        $checkLines = False
    EndIf
    
WEnd


Func TestEdit()
    Local $changed = False
    Local $eT = GUICtrlRead($Edit1)
    $aeT = StringSplit($eT, @CRLF)
    For $n = 1 To $aeT[0]
        If StringLen($aeT[$n]) > $MAXLINELENGTH Then
            $eT = StringReplace($eT, $aeT[$n], StringLeft($aeT[$n], $MAXLINELENGTH))
            $changed = True
        EndIf
        
    Next
    If $changed Then GUICtrlSetData($Edit1, $eT)
EndFunc  ;==>TestEdit

Func DB_WM_COMMAND($hWnd, $iMsg, $iwParam, $ilParam)
    Local $setHK = False
    $nNotifyCode = BitShift($iwParam, 16)
    $nID = BitAND($iwParam, 0x0000FFFF)
    $hCtrl = $ilParam
    
    If $nNotifyCode = $EN_CHANGE Then
        If $ilParam = $hEd And Not $checkLines Then
            $checkLines = True
        EndIf
        
    EndIf

    Return $GUI_RUNDEFMSG
    

EndFunc  ;==>DB_WM_COMMAND

Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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Thanks this works, but maybe there's another way around this? I'll try to explain: I want to make the edit so that, when the horizontal scrollbars are needed to see the remaining text on that line, it will automatically jump to the next line to avoid the need of the horizontal scrollbar. Thanks!

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Thanks this works, but maybe there's another way around this? I'll try to explain: I want to make the edit so that, when the horizontal scrollbars are needed to see the remaining text on that line, it will automatically jump to the next line to avoid the need of the horizontal scrollbar. Thanks!

Hhhm. might have been a good idea to explain that at the start.

Maybe this is the sort of thing you want

$Edit1 = GUICtrlCreateEdit("", 88, 16, 233, 193, BitOR($ES_AUTOVSCROLL,$ES_WANTRETURN))

Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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You're right, I should have mentioned that earlier. The script works fine now. But the Verticalscrollbar is also missing. I'd like to have no horizontal scrollbar, but I'd like to have the verticalscrollbar. Any way to get it back? I tried removing $ES_AUTOVSCROLL but then the whole edit control got stuck :). Thanks!

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Thanks, that did it!

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