Trouble with DllStruct and LVM_SETITEMTEXT

[this-is-me]

I am pretty sure I have done something wrong, but I can't seem to see what it is. Can anyone point me in the right direction?

$LVITEM = DllStructCreate("uint;int;int;uint;uint;ptr;int;int;char")
$str = DllStructCreate("char[" & StringLen($txt) + 1 & "]")
DllStructSetData($str,1,$txt)
DllStructSetData($LVITEM,1,$LVIF_TEXT)
DllStructSetData($LVITEM,2,$x)
DllStructSetData($LVITEM,3,1);subitem
DllStructSetData($LVITEM,4,0)
DllStructSetData($LVITEM,5,0)
DllStructSetData($LVITEM,6,DllStructGetPtr($str))
DllStructSetData($LVITEM,7,255)
DllStructSetData($LVITEM,8,0)
DllStructSetData($LVITEM,9,0)
$ret = dllcall("user32.dll", "int", "SendMessage", "hWnd", $hwnd, "int", $LVM_SETITEMTEXT, "int", $x, "long", DllStructGetPtr($LVITEM))

Just so you know, I do have the right hwnd and item number.

[this-is-me]

Am I speeking Greek here? Do I not have enough information?

[Ejoc]

Maybe you aren't setting the correct data in the struct, it seems like you are calling everything using the correct syntax.

Seems like XP and everything before use different structs.

typedef struct _LVITEM { 
    UINT mask; 
    int iItem; 
    int iSubItem; 
    UINT state; 
    UINT stateMask; 
    LPTSTR pszText; 
    int cchTextMax; 
    int iImage; 
    LPARAM lParam;
#if (_WIN32_IE >= 0x0300)
    int iIndent;
#endif
#if (_WIN32_IE >= 0x560)
    int iGroupId;
    UINT cColumns; // tile view columns
    PUINT puColumns;
#endif
} LVITEM, *LPLVITEM;

maybe gafrost knows better

Edited June 20, 2005 by Ejoc

[this-is-me]

I saw that, but where is _WIN32_IE defined? Where can I find the value for _WIN32_IE?

[SumTingWong]

I saw that, but where is _WIN32_IE defined? Where can I find the value for _WIN32_IE?

<{POST_SNAPBACK}>

I think you need a tenth member in your struct

$LVITEM = DllStructCreate("uint;int;int;uint;uint;ptr;int;int;int;int")

LPARAM is a long or int and not char.

[Ejoc]

Run this after your dllcall

_GetLastErrorMessage("After DLLCall")


;===============================================
;   _GetLastErrorMessage($DisplayMsgBox="")
;   Format the last windows error as a string and return it
;   if $DisplayMsgBox <> "" Then it will display a message box w/ the error
;   Return      Window's error as a string
;===============================================
Func _GetLastErrorMessage($DisplayMsgBox="")
    Local $ret,$s
    Local $p    = DllStructCreate("char[4096]")
    Local Const $FORMAT_MESSAGE_FROM_SYSTEM     = 0x00001000

    If @error Then Return ""

    $ret    = DllCall("Kernel32.dll","int","GetLastError")

    $ret    = DllCall("kernel32.dll","int","FormatMessage",_
                        "int",$FORMAT_MESSAGE_FROM_SYSTEM,_
                        "ptr",0,_
                        "int",$ret[0],_
                        "int",0,_
                        "ptr",DllStructGetPtr($p),_
                        "int",4096,_
                        "ptr",0)
    $s  = DllStructGetData($p,1)
    DllStructDelete($p)
    If $DisplayMsgBox <> "" Then MsgBox(0,"_GetLastErrorMessage",$DisplayMsgBox & @CRLF & $s)
    return $s
EndFunc

[GaryFrost]

expandcollapse popup

#include <GuiConstants.au3>

Global Const $LVM_FIRST = 0x1000
Global Const $LVM_SETITEMTEXTA = ($LVM_FIRST + 46)
Global Const $LVIF_TEXT = 0x1
Global Const $LV_ERR = -1
Global Const $LVS_EX_GRIDLINES = 0x1
Global Const $LVS_EX_REGIONAL = 0x200


opt('MustDeclareVars', 1)
Dim $listview, $Btn_SetItem0, $Btn_Exit, $msg, $Status, $ret, $Btn_SetSub1
GUICreate("ListView Set Item Text", 392, 322)

$listview = GUICtrlCreateListView("col1|col2|col3", 40, 30, 310, 149, BitOR($LVS_SHOWSELALWAYS, $LVS_NOSORTHEADER), BitOR($LVS_EX_FULLROWSELECT, $LVS_EX_GRIDLINES, $LVS_EX_REGIONAL))
GUICtrlCreateListViewItem("index 0|data1|more1", $listview)
GUICtrlCreateListViewItem("index 1|data2|more2", $listview)
GUICtrlCreateListViewItem("index 2|data3|more3", $listview)
GUICtrlCreateListViewItem("index 3|data4|more4", $listview)
GUICtrlCreateListViewItem("index 4|data5|more5", $listview)
$Btn_SetItem0 = GUICtrlCreateButton("Set 2 Item", 150, 200, 120, 40)
$Btn_SetSub1 = GUICtrlCreateButton("Set 2 SubItem", 150, 250, 120, 40)
$Btn_Exit = GUICtrlCreateButton("Exit", 300, 260, 70, 30)
$Status = GUICtrlCreateLabel("", 0, 302, 392, 20, BitOR($SS_SUNKEN, $SS_CENTER))

GUISetState()
While 1
    $msg = GUIGetMsg()
    Select
        Case $msg = $GUI_EVENT_CLOSE Or $msg = $Btn_Exit
            ExitLoop
        Case $msg = $Btn_SetItem0
            _GUICtrlListViewSetItemText (ControlGetHandle("ListView Set Item Text","",$listview), 2, 0, "Testing")
        Case $msg = $Btn_SetSub1
            _GUICtrlListViewSetItemText (ControlGetHandle("ListView Set Item Text","",$listview), 2, 1, "Sub")
    EndSelect
WEnd
Exit

;===============================================================================
;
; Description:          _GUICtrlListViewSetItemText
; Parameter(s):     $h_listview - controlID
;                           $i_index - Zero based index of the item
;                           $i_subitem - Index of the subitem, or it can be zero to set the item label.
;                           $s_text - String containing the new text
; Requirement:          None
; Return Value(s):  1 if successful, 0 if not
;                           If error then $LV_ERR is returned
; User CallTip:     _GUICtrlListViewSetItemText($h_listview, $i_index, $i_subitem, $s_text) Changes the text of a list-view item or subitem. (required: <GuiListView.au3>)
; Author(s):            Gary Frost (custompcs@charter.net)
; Note(s):
;
;===============================================================================
Func _GUICtrlListViewSetItemText($h_listview, $i_index, $i_SubItem, $s_text)
    Local $struct = "int;int;int;int;int;ptr;int;int;int;int;int;ptr", $ret
    Local $p = DllStructCreate ($struct)
    If @error Then
        Return $LV_ERR
    EndIf
    Local $sp = DllStructCreate ("char[" & StringLen($s_text) + 1 & "]")
    If @error Then
        DllStructDelete ($p)
        Return $LV_ERR
    EndIf
    DllStructSetData ($sp, 1, $s_text)
    DllStructSetData ($p, 1, $LVIF_TEXT)
    DllStructSetData ($p, 2, $i_index)
    DllStructSetData ($p, 3, $i_SubItem)
    DllStructSetData ($p, 6, DllStructGetPtr ($sp))
    $ret = DllCall("user32.dll","int","SendMessage","hwnd",$h_listview,"int",$LVM_SETITEMTEXTA, "int",$i_index, "ptr", DllStructGetPtr ($p))
    DllStructDelete ($p)
    DllStructDelete ($sp)
    Return $ret[0]
EndFunc ;==>_GUICtrlListViewSetItemText

Cleaned it up

Edited June 20, 2005 by gafrost

[this-is-me]

Thanx Frosty.