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Shaggi

Getting the text of an icon on the desktop

6 posts in this topic

Been stuck in this for a day now. As far as i know, the desktop's a syslistview32 control, where icons on the desktop is items, right?

Therefore i should be able to get the icon text using LVM_GETITEMTEXT?

using this code:

for item in GetListViewItems(hList)
     debugout(consolewrite, GetItemText(hList, item))
next

where GetItemText is:

#cs GetItemText(hList, item)
    @param1 = handle to the listview (hWnd)
    @param2 = index of the item
    @ret = on error, "", on success, the item's text.
#ce
Func GetItemText(hList, item)
    ; the one in structureconstants.au3 seems to be wrong
    const LVITEM = "UINT mask;int iItem;int iSubItem;UINT state;UINT stateMask; ptr pszText;" & _
    "int cchTextMax;int iImage;LPARAM lParam;int iIndent;int iGroupId;UINT cColumns;" & _
    "UINT puColumns;int piColFmt;int iGroup;"

    ; Create and fill the buffer.
    Local lvitem_buf = DllStructCreate(LVITEM)
    DllStructSetData(lvitem_buf, "iSubItem", 0)
    DllStructSetData(lvitem_buf, "cchTextMax", 0xFF)
    DllStructSetData(lvitem_buf, "mask", $LVIF_TEXT)
    DllStructSetData(lvitem_buf, "iItem", item)
    Local size = DllStructGetSize(lvitem_buf)

    ; Open process and allocate a buffer large enough for the lvitem and the text (appended at back)
    Local hMem = ProcOpen(hList), buf = AllocMemory(hMem, size + 0xFF)
    if not buf then return ""

    ; Calc pointer to text, and set it in the lvitem, and write it to the process
    Local pText = buf + size
    DllStructSetData(lvitem_buf, "pszText", pText)
    WriteMemory(hMem, buf, size)

    ; Send the message and collect the amount of characters written
    Local chars = _SendMessage(hList, $LVM_GETITEMTEXTW, DllStructGetData(lvitem_buf, "iItem"), buf, 0)

    ; Collect a binary string (for debug)
    Local bytes = ReadMemory(hMem, buf, "byte[" & size + 0xFF & "]")

    ; Calc pointer to text to be sure, and get the string.
    Local ptextout = ReadMemory(hMem, buf + offsetof(lvitem_buf, "pszText"), "ptr")
    Local stext = ReadMemory(hMem, ptextout, "wchar[256]")

    ; Debug stuff
    debugout(consolewrite, bytes)
    debugout(consolewrite, "[chars = " & chars & "]" & stext)
    debugout(consolewrite, _WinApi_GetLastErrorMessage())

    ; Clean up
    FreeMemory(hMem, buf, size + 0xFF)
    CloseHandle(hMem)

    return stext
EndFunc

And hList is a class SysListView32 belonging to the progman window.

Output is:

0x01000000 + item + 000000000000000000000000000000 3C007D06FF (pointer to buffer at end) ... (zero'es)
[chars = 0]
The operation completed successfully.
[empty string]

Does anybody know what's going on? I'll admit i dont have a lot of knowledge about listviews, but this is the way that both msdn and general searching suggests (check out this link: http://social.msdn.microsoft.com/Forums/eu/winforms/thread/d7df8a4d-fc0f-4b62-80c9-7768756456e6)

Using autoit beta x64 (irrelevant though, tried in other languages too), and windows 7 x64.

Any help appreciated .. :D


Ever wanted to call functions in another process? ProcessCall UDFConsole stuff: Console UDFC Preprocessor for AutoIt OMG

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I think you are making it more complicated than it needs to be. Why not just do something like this:

#include <file.au3>
#include <array.au3>

$list = _FileListToArray(@DesktopDir, "*.lnk", 1)
_ArrayDisplay($list)

I need to be able to get/set the icons positions, get the icon etc.. :)

Ever wanted to call functions in another process? ProcessCall UDFConsole stuff: Console UDFC Preprocessor for AutoIt OMG

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You can use FileGetShortcut returns an array with all that info.

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You can use FileGetShortcut returns an array with all that info.

only works for shortcuts, and i would still need to arrange the icons on the desktop

Ever wanted to call functions in another process? ProcessCall UDFConsole stuff: Console UDFC Preprocessor for AutoIt OMG

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It sounds like you're looking to do something similar to what you might want to take a look at how he did it and adapt to your needs.


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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Reads text file for list of IP's ; ; the above command, it loads in the $IPlist array the values contained in the file IP_List.txt ; values in the file should be separated by a semicolon, something like in the following example: ; ; hostname1;192.168.0.1 ; hostname2;192.168.0.5 ; hostnameX;10.59.7.200 ; etc.... ; ; if values in the file are not separated by a semicolon, but another char is used, for example a comma, ; then just pass it as second parameter of the function: $IPlist = _FileReadToArray_mod(".\IP_List.txt", ",") ; _GUICtrlListView_BeginUpdate($listview) _GUICtrlListView_DeleteAllItems($listview) _GUICtrlListView_AddArray($listview, $IPlist) ; fill ListView _GUICtrlListView_EndUpdate($listview) While Not $StopPing ; 1 ; continuously ping addresses of the previously loaded file (IP_List.txt) Sleep(10) ; ; $IPlist is the array loaded with all the IP to be pinged (a 2d array in this case) ; | ; | 1 means the IP are in the second column of the $IPlist array (first colun is nr. 0) ; | | ; | | +--> 0 means return back an array loaded with results from all pinged addresses (responding and not responding) ; | | | if you use 1 then only responding addresses are loaded in the returned array [default] ; | | | if you use 2 then only NOT responding addresses are loaded in the returned array ; | | | In this case we do not need an array to be returned, we only need to perform all pings and pass results ; | | | directly (on the fly) to the "_refresh" callback function that will refresh the listview ; | | | ; | | | 0 means NO lookup name resolution must be performed ; | | | | ; | | | | +--> this is the callback function to be called for each pinged address each time the ping has finished ; | | | | | (see the MultiPing.au3 file for info on all passed params) ; | | | | | 6 parameters are passed to this function, but only 2 are used by the called function in this case: ; | | | | | [4] roundtrip of the responding ping or -1 if IP is down ; | | | | | [5] Index (position) of this IP within the caller's passed array ; | | | | | ; v v v v v _nPing($IPlist, 1, 0, 0, "_refresh") WEnd EndFunc ;==>Main_GO #EndRegion ; Main_GO/Replace_and_GO #Region ; QuickScan/Replace_and_GO2 Func replace_And_Go2($s_2, $s_3) ; Create a new array wit a new list of IP according to passed second and third octet Local $aNew_IPlist = $aBase_IPlist For $i = 0 To UBound($aNew_IPlist) - 1 $aNew_IPlist[$i][1] = StringReplace(StringReplace($aBase_IPlist[$i][1], $replace2, $s_2), $replace3, $s_3) Next GUISetState(@SW_HIDE, $IPMonkey) GUISetState(@SW_SHOW, $PingGui) ; pass the new list to the pinger QuickRun($aNew_IPlist) GUISetState(@SW_HIDE, $PingGui) GUISetState(@SW_SHOW, $IPMonkey) EndFunc ;==>replace_And_Go2 Func QuickRun($IPlist) $userdata1 = GUICtrlRead($data1) $userdata2 = GUICtrlRead($data2) HotKeySet("{esc}", "_button1") Local $Win_X = 1200, $Win_Y = 880 ; dimension of window $PingGui = GUICreate("IP Monkey" & "~~~" & @UserName & "~~~" & "Store" & $userdata1 & $userdata2 & "~~~" & @MON & "." & @MDAY & "." & @YEAR & "~~~" & @HOUR & "." & @MIN, $Win_X, $Win_Y, -1, -1) GUISetOnEvent($GUI_EVENT_CLOSE, "_button1", $PingGui) $listview = GUICtrlCreateListView("", 10, 10, $Win_X - 20, $Win_Y - 40) GUICtrlSetFont(-1, 8) GUICtrlSetStyle($listview, $LVS_ICON) ; + $LVS_NOLABELWRAP) ; Generate colored square images $hImage = _GUIImageList_Create(30, 30) _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($listview, 0xFFFF00, 30, 30)) ; yellow _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($listview, 0xFF0000, 30, 30)) ; red _GUIImageList_Add($hImage, _GUICtrlListView_CreateSolidBitMap($listview, 0x00FF00, 30, 30)) ; green _GUICtrlListView_SetImageList($listview, $hImage, 0) $button1 = GUICtrlCreateButton("Exit", 10, $Win_Y - 25, $Win_X - 20, 20) GUICtrlSetTip(-1, "End of program") GUICtrlSetOnEvent(-1, "exitbuttonClick") GUISetState(@SW_SHOW) ;~ $IPlist = _FileReadToArray_mod(".\IP_List.txt") ; Reads text file for list of IP's _GUICtrlListView_BeginUpdate($listview) _GUICtrlListView_AddArray($listview, $IPlist) ; fill ListView _GUICtrlListView_EndUpdate($listview) ;While 1 ; perform Pings and update ListView by the "_refresh" callback function $aFinalResult = _nPing($IPlist, 1, 0, 0, "_refresh") ;~ _ArrayDisplay($aFinalResult) ;DirCheck() EndFunc ;==>QuickRun #EndRegion ; QuickScan/Replace_and_GO2 #Region ; Misc Funcs (network) Func _refresh($Params) ; this receive ping results and displays them in the ListView _GUICtrlListView_SetItemImage($listview, $Params[5], 0) ; set colour to Yellow Sleep(50) ; a little wait If $Params[4] = -1 Then ; Device not responding to ping _GUICtrlListView_SetItemImage($listview, $Params[5], 1) ; set colour to RED _GUICtrlListView_EnsureVisible($listview, $Params[5]) ; Position view to this item Else ; Device responds to ping _GUICtrlListView_SetItemImage($listview, $Params[5], 2) ; set colour to GREEN EndIf EndFunc ;==>_refresh Func _button1() ; Button 1 clicked ;~ $StopPing = 1 Exit EndFunc ;==>_button1 #EndRegion ; Misc Funcs (network)  
      MultiPing.au3
      IP_List.txt
    • elsemieni
      By elsemieni
      Hey hello.
      I came here with maybe too specific questions about uncommon things, but as people says, I don't lose anything trying to asking here 
      There's long time that I have a little "experimental" idea: Use windows desktop and it icon system like old videogame consoles (where "sprites" are used to draw things on screen, can be manipulated/animated to make interesting things happen). Some of that inspiration came from another experiments from demoscene.
      Researching the possibilities of doing something like that (maybe not so intense) I found that the Windows Desktop uses a GuiListView to show and arrange icons (and of course, AutoIt provides UDF's for that  ). So, I'm used that UDF to create dummy icons (not putting files on Desktop, just modifiying the "GUI layer" of desktop for put non-working icons), setting custom values like coordinates, name and Icon (from a list of loaded icons in the GuiListView).  As you can see in next image works well in Windows XP... even in Windows 95 (that's not the case from Windows Vista to 10, but I already posted another question here about that... anyways, for now I'm working that with a isolated XP machine... sigh).

      Another video doing an animation with that:
      How I make that custom icons? Here:
      $hWnd = ControlGetHandle("Program Manager", "", "[CLASS:SysListView32; INSTANCE:1]") $newItem = _GUICtrlListView_AddItem ( $hWnd, "TEST", 32 ) ; with an icon of index 32 _GUICtrlListView_SetItemPosition ( $hWnd, $newItem, 300, 300 ) ; set some example property. Put in X=300 Y=300 Okay, so the next phase was changing the icons with custom ones. And here starts the issues. As AutoIT help says, icons from GuiListView came from a loaded GUIImageList, which, seeing past images I conclude that it's already preloaded with some sort of most used icons (something like an icon cache?). But If I modify it (or create another GUIImageList and then put into the GuiListView) the icons became corrupted and replaced with blank ones. (can be reverted deleting IconCache.db, just like when windows shows wrong icons in desktop).
      How I change icons? Here
      $hImage = _GUIImageList_Create(48, 48, 5) ; create an image list for 48x48 icons $newIcon = _GUIImageList_AddIcon($imageList, @SystemDir & "\shell32.dll", 110) ; just adding a new icon in the image list _GUICtrlListView_SetImageList($hWnd, $hImage, 0) ; $hwnd is the desktop hwnd Another option as workaround for setting icons was getting the desktop GUIImageList, and modifiyng it directly. I otbtain a GUIImageList handle, but ... without any images inside! (That's strange beacuse, when I set desktop item icons without altering the GUIImageList, it applies correctly). And finally if I try to add new ones, it returns -1 with @error setted.
      How I'm trying to get  desktop GUIImageList? Here.
      $imageList = _GUICtrlListView_GetImageList ( $hWnd, 0 ) MsgBox(0,_GUIImageList_GetImageCount ( $imageList ), $imageList) ; getting image count and GUIImageList handle $newIcon = _GUIImageList_AddIcon($imageList, @SystemDir & "\shell32.dll", 110) ; adding icons without success So, what is the question? There's something wrong I'm doing while trying to set the new icon set on desktop? Or desktop icons work in different way than the rest of the GuiListView's? Or there's something really stupid that I can't saw before that corrupts the icons? 
      Also... if there's not known solution for that, do you have some idea for doing a workaround for that? Or another crazy idea? (Maybe putting real files instead dummy icons could be a solution ... a very slow one). Or even maybe (maybe not, I sure about that xD) do you want to help with this "experiment".
      Thanks in advance, have a good day