Put number into 1st word of string buffer

[GaryFrost]

Not sure how to go about it in Autoit

Edit Controls

EM_GETLINE function is what I'm trying to figure out.

Param

Pointer to the buffer that receives a copy of the line. Before sending the message, set the first word of this buffer to the size, in TCHARs, of the buffer. For ANSI text, this is the number of bytes; for Unicode text, this is the number of characters. The size in the first word is overwritten by the copied line.

expandcollapse popup

#include <GuiEdit.au3>
#include <Misc.au3>

Global Const $EM_GETLINE = 0xC4

Run("Notepad")
WinWait("Untitled - Notepad")
;~ Sleep ( 5000 )
$h_Edit = ControlGetHandle("Untitled - Notepad", "", "Edit1")
$text = "this is line 1" & @CRLF & "Line 2" & @CRLF & "Line 3"
_WM_SETTEXT($h_Edit, $text)
ConsoleWrite(_GUICtrlEditGetLine($h_Edit, 2) & @LF)

Func _WM_SETTEXT($h_Edit, $s_Text)
    Local Const $WM_SETTEXT = 0xC
    Local $struct_string = DllStructCreate("char[" & StringLen($s_Text) + 1 & "]")
    DllStructSetData($struct_string, 1, $s_Text)
    _SendMessage($h_Edit, $WM_SETTEXT, 0, DllStructGetPtr($struct_string))
EndFunc   ;==>_WM_SETTEXT

Func _GUICtrlEditGetLine($h_Edit, $i_line)
    $i_index = _GUICtrlEditLineIndex($h_Edit, $i_line)
    ConsoleWrite("$i_index: " & $i_index & @LF)
    $length = _GUICtrlEditLineLength($h_Edit, $i_index)
    ConsoleWrite("Length: " & $length & @LF)
;************************************************************************************
; lines in question, how to set 1st word to length?
;************************************************************************************
    $struct_Buffer = DllStructCreate("char[" & $length & "]") ; need to set 1st word to length?
    If @error Then Return SetError(-1, -1, "")
    Local $iResult = _SendMessage($h_Edit, $EM_GETLINE, $i_index, DllStructGetPtr($struct_Buffer))
    If @error Then Return SetError(-2, -2, "")
    Return DllStructGetData($struct_Buffer, 1)
;************************************************************************************
;************************************************************************************
;************************************************************************************
EndFunc   ;==>_GUICtrlEditGetLine

Gary

[Valuater]

Put number into 1st word of string buffer

this should do the trick

= nsutmrbienrg

lol

8)

[GaryFrost]

Put number into 1st word of string buffer

this should do the trick

= nsutmrbienrg

lol

8)

Like to see that one get the line smart a..

[The Kandie Man]

Sorry, i tried a bit and couldn't get it to work.

Wouldn't it just be easier to read the whole control, split the text into an array by line, and then read the corresponding element of the array to get the text you want?

[EDIT]

Here is something i whipped up, but i bet you already knew how to do this:

Dim $i_LineNumberToGetTextFrom = 3
Dim $s_ControlText = ControlGetText("Untitled - Notepad", "", "Edit1")
Dim $as_ControlText = StringSplit( StringStripCR($s_controltext), @LF)

If UBound($as_ControlText)-1 >= $i_LineNumberToGetTextFrom  Then
    ConsoleWrite("Line Text:" & $as_ControlText[$i_LineNumberToGetTextFrom]&@LF)
    Msgbox(0,"Line " & $i_LineNumberToGetTextFrom & " text is:",$as_ControlText[$i_LineNumberToGetTextFrom])
Endif

Edited December 12, 2006 by The Kandie Man

[GaryFrost]

Sorry, i tried a bit and couldn't get it to work.

Wouldn't it just be easier to read the whole control, split the text into an array by line, and then read the corresponding element of the array to get the text you want?

[EDIT]

Here is something i whipped up, but i bet you already knew how to do this:

Dim $i_LineNumberToGetTextFrom = 3
Dim $s_ControlText = ControlGetText("Untitled - Notepad", "", "Edit1")
Dim $as_ControlText = StringSplit( StringStripCR($s_controltext), @LF)

If UBound($as_ControlText)-1 >= $i_LineNumberToGetTextFrom  Then
    ConsoleWrite("Line Text:" & $as_ControlText[$i_LineNumberToGetTextFrom]&@LF)
    Msgbox(0,"Line " & $i_LineNumberToGetTextFrom & " text is:",$as_ControlText[$i_LineNumberToGetTextFrom])
Endif

Wasn't the point http://www.autoitscript.com/forum/index.ph...st&p=280409

[GaryFrost]

*bump*

[Jos]

Does this help?

$struct_Buffer = DllStructCreate("char[" & $length & "]") ; need to set 1st word to length?
    If @error Then Return SetError(-1, -1, "")
    DllStructSetData($struct_Buffer,1,$length,1)
    Local $iResult = _SendMessage($h_Edit, $EM_GETLINE, $i_line-1, DllStructGetPtr($struct_Buffer))
    If @error Then Return SetError(-2, -2, "")
    Return DllStructGetData($struct_Buffer, 1)

Looks like you need to set the first Byte of the struct to the length ...

Edited December 12, 2006 by JdeB

[The Kandie Man]

Does this help?

$struct_Buffer = DllStructCreate("char[" & $length & "]") ; need to set 1st word to length?
    If @error Then Return SetError(-1, -1, "")
    DllStructSetData($struct_Buffer,1,$length,1)
    Local $iResult = _SendMessage($h_Edit, $EM_GETLINE, $i_line-1, DllStructGetPtr($struct_Buffer))
    If @error Then Return SetError(-2, -2, "")
    Return DllStructGetData($struct_Buffer, 1)

Looks like you need to set the first Byte of the struct to the length ...

Yes, worked for me. Spent a while trying to figure out why it wasn't working.

[GaryFrost]

Does this help?

$struct_Buffer = DllStructCreate("char[" & $length & "]") ; need to set 1st word to length?
    If @error Then Return SetError(-1, -1, "")
    DllStructSetData($struct_Buffer,1,$length,1)
    Local $iResult = _SendMessage($h_Edit, $EM_GETLINE, $i_line-1, DllStructGetPtr($struct_Buffer))
    If @error Then Return SetError(-2, -2, "")
    Return DllStructGetData($struct_Buffer, 1)

Looks like you need to set the first Byte of the struct to the length ...

Yep, that worked, thanks.

Thought I tried that, but must of done it wrong.

Edit: yep did try that, just forgot to subtract 1 from the line.

Gary

Edited December 12, 2006 by gafrost

[Valik]

Make sure you set the first word, not necessarily the first byte. A word is 16 bits and a byte is 8 bits. I would probably create the structure as:

$struct_Buffer = DllStructCreate("short;char[" & $length - 2 & "]")oÝ÷ Ù8^*.q©ìzÛayø«²ÛÚ籪i®k«^N§«^¯^*.ç¶që,¶¬¶¸§)íæî}÷«r·µæ§{-®ç-º·®²)ඩ¢)íz»h¶¨®("©l¶»¶êÞjëh×6$struct_String = DllStructCreate("char[" & $length & "]", DllStructGetPtr($struct_Buffer))

The main reason for doing that is the method shown above is limited to a string length of 255. Trying to assign a value larger than that to a char will result in overflowing the char. Also, the only reason the code works at all is because Windows is little endian so the first byte is the low-order byte.

Edited December 13, 2006 by Valik
Typo fix.

[GaryFrost]

Make sure you set the first word, not necessarily the first byte. A word is 16 bits and a byte is 8 bits. I would probably create the structure as:

$struct_Buffer = DllStructCreate("short;char[" & $length - 2 & "]")oÝ÷ Ù8^*.q©ìzÛayø«²ÛÚ籪i®k«^N§«^¯^*.ç¶që,¶¬¶¸§)íæî}÷«r·µæ§{-®ç-º·®²)ඩ¢)íz»h¶¨®("©l¶»¶êÞjëh×6$struct_String = DllStructCreate("char[" & $length & "]", DllStructGetPtr($struct_Buffer))

The main reason for doing that is the method shown above is limited to a string length of 255. Trying to assign a value larger than that to a char will result in overflowing the char. Also, the only reason the code works at all is because Windows is little endian so the first byte is the low-order byte.

Thanks for the tip/help Valik

Gary