_GUICtrlEditGetLine API - Bug

[VoSs2o0o]

Hi,

I have wondered why my current program give me some strange values, and i have found more about a windows bug in google,

The EM_GETLINE Message works not correctly somethimes. A "better" _GUICtrlEditGetLine should be:

;===============================================================================
;
; Description:          _GUICtrlEditGetLine
; Parameter(s):     $h_edit - controlID
;                           $i_line - Specifies the line to be retrieved.
; Requirement:          None
; Return Value(s):  Returns the line from the multiline edit control.
;                           If an error occurs, the return value is "" (empty string) and @error is set.
; User CallTip:     _GUICtrlEditGetLine($h_edit, $i_line) Copies a line of text from an edit control. (required: <GuiEdit.au3>)
; Author(s):            Gary Frost (custompcs at charter dot net)
;                           Jos van der Zande <jdeb at autoitscript com >
; Note(s):
;
;===============================================================================
Func _GUICtrlEditGetLine(ByRef $h_Edit, $i_line)
    Local $i_index = _GUICtrlEditLineIndex($h_Edit, $i_line)
    If @error Then Return SetError($EC_ERR, $EC_ERR, "")
    ;Local $length = _GUICtrlEditLineLength($h_Edit, $i_index) ;not needed
    ;If @error Then Return SetError($EC_ERR, $EC_ERR, "")      ;not needed
         Local $length = 1024 - 2                              ;better way to make sure that you have the complete line readed
    Local $struct_Buffer = DllStructCreate("short;char[" & $length + 2 & "]")
    If @error Then Return SetError($EC_ERR, $EC_ERR, "")
    DllStructSetData($struct_Buffer, 1, $length, 1)
    If IsHWnd($h_Edit) Then
        _SendMessage($h_Edit, $EM_GETLINE, $i_line - 1, DllStructGetPtr($struct_Buffer))
        If @error Then Return SetError($EC_ERR, $EC_ERR, "")
    Else
        GUICtrlSendMsg($h_Edit, $EM_GETLINE, $i_line - 1, DllStructGetPtr($struct_Buffer))
        If @error Then Return SetError($EC_ERR, $EC_ERR, "")
    EndIf
    Local $struct_String = DllStructCreate("char[" & $length & "]", DllStructGetPtr($struct_Buffer))    
    If @error Then Return SetError($EC_ERR, $EC_ERR, "")
    Return DllStructGetData($struct_String, 1)
EndFunc   ;==>_GUICtrlEditGetLine

replace the old UDF in AutoIt\include\GuiEdit.au3 with this version to fix that problem.

I don't have posted it to the Bug-Forum, because its "only" a Windows Bug since Windows 2000,

the AutoIt code is correct and in other Windows versions it works stable (including the new Vista? )

[GaryFrost]

Hi,

I have wondered why my current program give me some strange values, and i have found more about a windows bug in google,

The EM_GETLINE Message works not correctly somethimes. A "better" _GUICtrlEditGetLine should be:

replace the old UDF in AutoIt\include\GuiEdit.au3 with this version to fix that problem.

I don't have posted it to the Bug-Forum, because its "only" a Windows Bug since Windows 2000,

the AutoIt code is correct and in other Windows versions it works stable (including the new Vista? )

Mind explaining better what versions of windows you think it is a bug in?

Just ran it in Win2k Pro SP4 with no problems, and WinXP Pro SP2 also with no problems.