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_DLLStructDisplay While working on debugging a project a while back, I was looking for better ways to debug the code. And voila, here it is. Anyway, this function displays the contents of your DLLStruct's in a ListView format (placing the items in an array and utilizing _ArrayDisplay). IMPORTANT: You must supply the string EXACTLY as it was used to set up the structure (although you can add descriptions after the datatypes if they aren't already there). The string requirement might seem like one more extra step, but without it the function wouldn't work (and you're debugging would be much harder). The code is smart enough to split items into subitems (based on [#]'s found), and will display the description with {sub item #x}). Also - the behaviour with GINORMOUS pieces of data is unknown - this is best used with smaller structures! NOTE: One thing you might notice about structures is alignment has alot to do with where items are placed in the structure. The default is '8', which means that everything is aligned on a boundary equally divisible by itself (char being 1 byte is aligned anywhere, int's being 4 bytes, are aligned on offsets divisible by 4, double's and int64's both are aligned on offsets equally divisible by 8) HOWEVER: a prefix of 'align ##' can change this behavior so that the data can be 'misaligned' so to speak, to the specified alignment # (see AutoIT Help info for DLLStructCreate) Update Log: Download the ZIP Here Ascend4nt's AutoIT Code License agreement: While I provide this source code freely, if you do use the code in your projects, all I ask is that: If you provide source, keep the header as I have put it, OR, if you expand it, then at least acknowledge me as the original author, and any other authors I creditIf the program is released, acknowledge me in your credits (it doesn't have to state which functions came from me, though again if the source is provided - see #1)The source on it's own (as opposed to part of a project) can not be posted unless a link to the page(s) where the code were retrieved from is provided and a message stating that the latest updates will be available on the page(s) linked to.Pieces of the code can however be discussed on the threads where Ascend4nt has posted the code without worrying about further linking.

I am trying to serialize all the autoit variable by >msgpack, so that I can used it in ZeroRPC (language-agnostic remote procedure call over internet). Int, string, binary are easy, but DllStruct is not. Before variable serialization become build-in function (I hope so), I have to find out my own way. Here is my attempt to guess the setup string. I am not sure did I deal with all the align and struct/endstruct correctly, please let me know if there is any bug. The output may not be the same with the original string, it is not bug. Test() Func Test() Local $Struct $Struct = DllStructCreate("align 2;byte;ptr[2]") ConsoleWrite(DLLStructAnalyze($Struct) & @LF) ; Output: byte;align 2;ptr[2] $Struct = DllStructCreate("int;struct;struct;uint64;uint;byte[5];endstruct;byte;endstruct;byte") ConsoleWrite(DLLStructAnalyze($Struct) & @LF) ; Output: int;struct;struct;uint64;uint;byte[5];endstruct;byte;endstruct;byte $Struct = DllStructCreate("int;uint64;struct;struct;uint;byte[5];endstruct;byte;endstruct;byte") ConsoleWrite(DLLStructAnalyze($Struct) & @LF) ; Output: int;uint64;struct;struct;uint;byte[5];endstruct;byte;endstruct;byte EndFunc

When I use DllStructCreate() to reserve a chunk of memory I would like to know if I can rely on that memory being initialized to zero. Experience suggests that it is, but I have been searching to try and find a definitive statement anywhere that this is the case. I apologise if I have missed somewhere. Part of the reason for this question is so that my next search (after my personal memory has dimmed) should yield a link to this post, hopefully with an answer. A number of DLLs I use have structs where a few parts have to be explicitly set and other parts are reserved with the instruction that they must be set to zero. Because DllStructCreate() appears to zero-initialise the memory, I tend to forget to do it explicitly and everything seems to work. I am wondering whether I have been lucky and am storing up trouble for myself. It seems likely that the OS has been asked for zeroed memory, but without a promise in the documentation for DllStructCreate(), perhaps that could change? Perhaps the developers wish to reserve the right to change their minds?

At least illogical to me! The following script is based on a script jchd wrote. I have changed it so it returns a tag rather than writing the element types and values to the Console. The tag and the values set in the structure are those he used. As is, it returns "char;". It should return "char[3]; ...'. With changes in the diagnostic code, I have seem it return "char[3];", but it should return the whole tag. I am aware that the script will not differentiate, for example, between an int and a long: it works from the type of what DllStructGetData returns, and calls it an int. I am concerned that there may be a memory leak due to a DLLStruct* call, because the code, with minor variations, produces different results. I have instrumented it liberally, but @error is 0 everywhere. Clues will be most welcome! Local $tag = "char a[3];handle b[3];uint c[35];byte d[128];wchar e[190000]; double f[3];int64 g[3];" & _ "char h[3];float i;double j;byte k;ubyte l;short m;ushort n;int o;uint p;char q" Local $struct = DllStructCreate($tag) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 1, 'sos') If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 2, Ptr(123456789)) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 3, 8, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 3, 0x87654321, 2) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 3, 256, 5) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 4, Binary('sos')) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 5, 'gno' & @CRLF & 'ji' & @TAB & 'o') If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 6, 3.1415926, 2) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 7, 17, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 7, -1, 2) DllStructSetData($struct, 8, 'end') If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 9, 2.7182818284590452353602874713527) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 10, 2.7182818284590452353602874713527) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 11, 107) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 12, -108) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 13, 109) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 14, 110) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 15, 111) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($struct, 16, 112) If @error Then MsgBox(0,@ScriptLineNumber,@error) _cDebug_DetectStructElements($struct) Func _cDebug_DetectStructElements($tStruct) Local $retTag Local $len = DllStructGetSize($tStruct) Local $ptr = DllStructGetPtr($tStruct) Local $nbElem = 1, $idx, $incr, $data, $type, $oldvalue, $readvalue, $elem $g_CDebug_sStructElementTypes = '' While 1 $data = DllStructGetData($tStruct, $nbElem) If @error And @error<>2 Then MsgBox(0,@ScriptLineNumber,@error) If @error = 2 Then ExitLoop ; if element out of range or unknown $type = VarGetType($data) $idx = 1 $incr = 0 ; determine max index of element While 1 DllStructGetData($tStruct, $nbElem, 2 * $idx) If @error And @error<>3 Then MsgBox(0,@ScriptLineNumber,@error) If @error = 3 Then ExitLoop $incr = $idx $idx *= 2 WEnd ; index is in [$idx, (2 * $idx) - 1] $idx += $incr Do DllStructGetData($tStruct, $nbElem, $idx) If @error And @error<>3 Then MsgBox(0,@ScriptLineNumber,@error) If @error = 3 Then ; if element is out of range ; approach is asymetric (upper bound is too big) $idx -= ($incr = 1) ? 1 : $incr / 2 Else $idx += Int($incr / 2) EndIf $incr = Int($incr / 2) Until $incr = 0 Switch $type Case "Int32", "Int64" $data = DllStructGetData($tStruct, $nbElem, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) DllStructSetData($tStruct, $nbElem, 0x7777666655554433, 1) $readvalue = DllStructGetData($tStruct, $nbElem, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) Switch $readvalue Case 0x7777666655554433 $elem = "int64" ; alias: uint64 ; alias: int_ptr(x64), long_ptr(x64), lresult(x64), lparam(x64) ; alias: uint_ptr(x64), ulong_ptr(x64), dword_ptr(x64), wparam(x64) Case 0x55554433 DllStructSetData($tStruct, $nbElem, 0x88887777, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $readvalue = DllStructGetData($tStruct, $nbElem, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $elem = ($readvalue > 0 ? "uint" : "int") ; int aliases: long, bool, int_ptr(x86), long_ptr(x86), lresult(x86), lparam(x86); ; uint aliases: ulong, dword, uint_ptr(x86), ulong_ptr(x86), dword_ptr(x86), wparam(x86) Case 0x4433 DllStructSetData($tStruct, $nbElem, 0x8888, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $readvalue = DllStructGetData($tStruct, $nbElem, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $elem = ($readvalue > 0 ? "ushort" : "short") Case 0x33 $elem = "byte" ; alias: ubyte EndSwitch DllStructSetData($tStruct, $nbElem, $data, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $retTag &= $elem Case "String" $oldvalue = DllStructGetData($tStruct, $nbElem, 1) DllStructSetData($tStruct, $nbElem, ChrW(0x2573), 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $readvalue = DllStructGetData($tStruct, $nbElem, 1) DllStructSetData($tStruct, $nbElem, $oldvalue, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $retTag = ($readvalue = ChrW(0x2573) ? "wchar" : "char") ;~ If $idx > 1 Then $elem &= "[" & $idx & "]" ; Dosn't work here either!!! Case "Binary" Local $blen = BinaryLen($data) $retTag = "byte" Case "Ptr" $retTag &= "ptr" ; alias: hwnd, handle Case "Double" $oldvalue = DllStructGetData($tStruct, $nbElem, 1) DllStructSetData($tStruct, $nbElem, 10^-15, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $readvalue = DllStructGetData($tStruct, $nbElem, 1) DllStructSetData($tStruct, $nbElem, $oldvalue, 1) If @error Then MsgBox(0,@ScriptLineNumber,@error) $retTag &= ($readvalue = 10^-15 ? "double" : "float") EndSwitch If $nbElem=1 Then MsgBox(0,@ScriptLineNumber,'idx '&$idx) If $idx>1 Then If $nbElem=1 Then MsgBox(0,@ScriptLineNumber,'before index') $retTag &= '['&$idx&']' EndIf $retTag &= ';' $nbElem += 1 WEnd MsgBox(0,@ScriptLineNumber,'$retTag "'&$retTag&'"') Return $retTag EndFunc jchd's code is in post 7

Hello Guys, once aggain I need your help on a DLL Topic I need to pass arguments to my function via a structure, because I am limited to only one argument that can be passed. But I don't think that thats so important. So here's my approach: C++ Code (just the important part): extern "C" { struct ParamStruct { const char* test1; const char* test2; const char* test3; int size; }; int testFunc(struct ParamStruct * params) { return params->size; } } And thats how I try to call the function using Autoit: Local $struct = "struct;char shapefile[128];char output[128];char filename[128];int size;endstruct" Local $tTest = DllStructCreate($struct) DllStructSetData($tTest, "test1", "Bla") DllStructSetData($tTest, "test2", "BlaBla") DllStructSetData($tTest, "test3", "BlaBlaBla") DllStructSetData($tTest, "size", 40) $dll = DLLOpen("myDLL.dll") $ret = DllCall($dll, "int:cdecl", "testFunc", "STRUCT*", DllStructGetPtr($tTest)) MsgBox(0, 0, $ret[0]) DllClose($dll) Just for testing I want the function to just return the integer value in the struct. But this aint working. I tested many things, but still I'm not able to get it running. I even don't know if the mistakes are in the C++ code or the Autoit code or both .. I'm not that skilled at C++ and also not that skilled at Autoit DLLCalls :-/ I would really appreciate some help! Kind regards, leo

Hi, I'm blocked on a strange issue concerning the use of '_WinAPI_ReadProcessMemory' to retrieve one 'String' between 2 cooperating applications based on the IPC method using a private 'Windows Message' handler (thanks to '_WinAPI_RegisterWindowMessage'). Let's me explain what happens: 1) - From a small GUI 'ipc-sender' application, the user can type any string (like 'abcde') and click a 'Send Data' button to exchange this info with another small 'ipc-receiver' application. the coding is done in such way ( '_DumpStruct()' method) that a trace of the data sent is dumped in an edit viewer inside the GUI: see the 'ipc-sender' script source below --> #Region ;**** Directives created by AutoIt3Wrapper_GUI **** #AutoIt3Wrapper_Outfile=ipc_sender.exe #EndRegion ;**** Directives created by AutoIt3Wrapper_GUI **** #include <GUIConstantsEx.au3> #include <SendMessage.au3> #include <MsgBoxConstants.au3> #include <WinAPI.au3> #include <WinAPISys.au3> #include <ProcessConstants.au3> #include <FontConstants.au3> #include <GuiEdit.au3> #include <ScrollBarsConstants.au3> #include <Array.au3> ; Author : Grosminet Global Const $WM_IPC_PRIVATE_Grosminet = _WinAPI_RegisterWindowMessage('ipc_sender_to_receiver') Global Const $sAPP_me = "ipc_sender" Global Const $sAPP_other = "ipc_receiver" Global $guiw = 1000, $guih = 300, $guix = (@desktopwidth - $guiw - 50), $guiy = $guih + 150, $sp = 10, $x = $sp, $y = $sp, $w, $hbut = 28, $h Global $hParentGUI, $hSendBut, $hlocalPID, $hSendEdit, $hRecEdit Global $debug = true, $info, $PIDAppMe, $hOtherProcess ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo $hParentGui = GUICreate($sAPP_me, $guiw, $guih, $guix, $guiy) $w = ($guiw - 3*$sp) / 4 $h = ($guih - 3* $sp) / 2 $hSendBut = GUICtrlCreateButton("Send data", $x, $y, $w, $hbut) $y += $hbut + $sp $hlocalPID = GUIctrlCreateLabel("PID=", $x, $y, $w, $h) $x += $w + $sp $y = $sp $hSendEdit = GUIctrlCreateEdit("abcde", $x, $y, 3* $w, $h) $x = $sp $y += $h + $sp $hRecEdit = GUIctrlCreateEdit("", $x, $y, 4* $w, $h) GUICtrlSetFont(-1, 9, $FW_NORMAL, Default, "Courier New") ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo GUISetState(@SW_SHOW, $hParentGui) GUICtrlSetData($hlocalPID, "PID= " & @AutoItPID) ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ; Get the RECEIVER application 'process handle' ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Opt("WinTitleMatchMode", 1) $hOtherProcess = WinGetHandle($sAPP_other) if @error then MsgBox($MB_SYSTEMMODAL, "ERROR", "Unable to retrieve handle of " & $sAPP_other & ", error= " & @error) exit endif $info = " Receiver application --> " & $sAPP_other & " - Handle= " & $hOtherProcess & @crlf _ShowInfo($info) ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo While 1 Switch GUIGetMsg() Case $GUI_EVENT_CLOSE _myExit() Case $hSendBut _SendDATA_to_X() EndSwitch WEnd ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _SendDATA_to_X() Local $sValue_To_Send = GUICtrlRead($hSendEdit) Local $iStringSize = StringLen($sValue_To_Send) + 1 local $TagInfoStruct = "struct;wchar buf[" & $iStringSize & "];endstruct" Local $tValue_To_Send = DllStructCreate($TagInfoStruct) DllStructSetData($tValue_To_Send, "buf", $sValue_To_Send) ; Local $pValue_To_Send = DllStructGetPtr($tValue_To_Send) Local $iSizeStruct = DllStructGetSize($tValue_To_Send) $info = '_SendDATA_to_X(): Pointer to text= ' & $pValue_To_Send & " - Size of text= " & $iStringSize & " - Size of structure= " & $iSizeStruct & @CRLF _ShowInfo($info) $info = _DumpStruct($pValue_To_Send, $iSizeStruct) _ShowInfo($info) ; local $ret = _WinAPI_PostMessage($hOtherProcess, $WM_IPC_PRIVATE_Grosminet, $pValue_To_Send, $iSizeStruct) If not $ret Then MsgBox($MB_SYSTEMMODAL, "ERROR", "_SendDATA_to_X(): " & $sAPP_me & " --> _WinAPI_PostMessage error= " & _WinAPI_GetLastError()) else Local $sData_Sent = StringLeft(DllStructGetData($tValue_To_Send, "buf"), $iStringSize) $info = '................: --> Data sent = ' & $sData_Sent & @CRLF _ShowInfo($info) endif $pValue_To_Send = 0 $tValue_To_Send = 0 EndFunc ;==>_SendDATA_to_X ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _ShowInfo($msg) if $debug then ConsoleWrite($msg) GUICtrlSetData($hRecEdit, GUICtrlRead($hRecEdit) & $msg) Local $iEnd = StringLen(GUICtrlRead($hRecEdit)) _GUICtrlEdit_SetSel($hRecEdit, $iEnd, $iEnd) _GUICtrlEdit_Scroll($hRecEdit, $SB_SCROLLCARET) Endfunc ; _ShowInfo ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _myExit() GUIDelete() exit Endfunc ; _myExit ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _DumpStruct($p_STRUCT, $iSizeStruct) ; $iSizeStruct = the size of the struct in bytes (DllStructGetSize) Local $TagStructDump = "struct;align;byte[" & $iSizeStruct & "];endstruct" Local $t_Struct = DllStructCreate($TagStructDump, $p_STRUCT) Local $i Local $structInfo = "" _ConsoleWriteInfo($structInfo, "Structure size: " & $iSizeStruct & " byte(s):" & @crlf) for $i = 0 to $iSizeStruct - 1 _ConsoleWriteInfo($structInfo, hex(DllStructGetData($t_Struct, 1, $i), 2) & " ") if (Mod($i+1, 8) = 0) then _ConsoleWriteInfo($structInfo, @CRLF) Endif Next _ConsoleWriteInfo($structInfo, @CRLF) return $structInfo EndFunc ; _DumpStruct ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _ConsoleWriteInfo(ByRef $msg, $txt) $msg &= $txt EndFunc ; _ConsoleWriteInfo 2) - From a small GUI 'ipc-receiver' application, the user can check the values of data received thanks to the same '_DumpStruct()' method: --> see the 'ipc-receiver' script : #Region ;**** Directives created by AutoIt3Wrapper_GUI **** #AutoIt3Wrapper_Outfile=ipc_receiver.exe #EndRegion ;**** Directives created by AutoIt3Wrapper_GUI **** #include <Array.au3> #include <GUIConstantsEx.au3> #include <SendMessage.au3> #include <MsgBoxConstants.au3> #include <WinAPI.au3> #include <WinAPISys.au3> #include <ProcessConstants.au3> #include <FontConstants.au3> #include <GuiEdit.au3> #include <ScrollBarsConstants.au3> #include <WinAPIDiag.au3> ; Author : Grosminet Global Const $WM_IPC_PRIVATE_Grosminet = _WinAPI_RegisterWindowMessage('ipc_sender_to_receiver') Global Const $sAPP_me = "ipc_receiver" Global Const $sAPP_other = "ipc_sender" Global Const $sSenderEXE = @scriptdir & "\" & $sAPP_other & ".exe" Global $guiw = 1000, $guih = 300, $guix = (@desktopwidth - $guiw - 50), $guiy = 100, $sp = 10, $x = $sp, $y = $sp, $w, $hbut = 28, $h Global $hParentGUI, $hlocalPID, $hRecEdit Global $debug = true, $info, $hProcessOther, $PIDAppMe, $PIDAppOther, $iRead, $aret ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo $hParentGui = GUICreate($sAPP_me, $guiw, $guih, $guix, $guiy) $w = ($guiw - 2*$sp) $hlocalPID = GUIctrlCreateLabel("PID=", $x, $y, $w, $hbut) $y += $hbut + $sp $h = ($guih - $y - $sp) $hRecEdit = GUIctrlCreateEdit("", $x, $y, $w, $h) GUICtrlSetFont(-1, 9, $FW_NORMAL, Default, "Courier New") ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo GUIRegisterMsg($WM_IPC_PRIVATE_Grosminet, 'WM_FROM_APP') GUISetState(@SW_SHOW, $hParentGui) GUICtrlSetData($hlocalPID, "PID= " & @AutoItPID) ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ; Get the SENDER application 'pid' ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo $PIDAppOther = ShellExecute($sSenderEXE) if $PIDAppOther = -1 then MsgBox($MB_SYSTEMMODAL, "ERROR", "Unable to start " & $sAPP_other & " --> error= " & @error) exit Endif sleep(500) $info = "Ready to receive ! Please send a text ..." & @CRLF _ShowInfo($info) ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ; Get the SENDER application 'process handle' ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo $hProcessOther = _WinAPI_OpenProcess($PROCESS_VM_READ, False, $PIDAppOther) if @error Then $info = "_WinAPI_OpenProcess() error: " & @error & @crlf _ShowInfo($info) exit endif ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo While 1 Switch GUIGetMsg() Case $GUI_EVENT_CLOSE _myExit() EndSwitch WEnd ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func WM_FROM_APP($hWnd, $iMsg, $wParam, $lParam) $info = "..... METHOD 1: _WinAPI_CreateBuffer ....." & @crlf _ShowInfo($info) _Method_1($wParam, $lParam) ; $info = "..... METHOD 2: DllStructCreate .........." & @crlf _ShowInfo($info) _Method_2($wParam, $lParam) EndFunc ;==>WM_FROM_APP ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _Method_1($wParam, $lParam) Local $iStrucSize_SENT = Int($lParam) Local $pBuffer = _WinAPI_CreateBuffer($iStrucSize_SENT) $aret = _WinAPI_ReadProcessMemory($hProcessOther, $wParam, $pBuffer, $iStrucSize_SENT, $iRead) ; $info = _DumpStruct($pBuffer, $iStrucSize_SENT) _ShowInfo($info) _ShowInfo(_WinAPI_GetString($pBuffer) & @crlf & "--------------------------------" & @crlf) _WinAPI_FreeMemory($pBuffer) EndFunc ; _Method_1 ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _Method_2($wParam, $lParam) Local $iStrucSize_SENT = Int($lParam) local $TagInfoStruct = "struct;align;byte buf[" & $iStrucSize_SENT & "];endstruct" Local $tbuffer = DllStructCreate($TagInfoStruct) Local $iSizeStruct = DllStructGetSize($tbuffer) Local $pBuffer = DllStructGetPtr($tbuffer) $aret = _WinAPI_ReadProcessMemory($hProcessOther, $wParam, $pBuffer, $iStrucSize_SENT, $iRead) ; $info = _DumpStruct($pBuffer, $iStrucSize_SENT) _ShowInfo($info) _ShowInfo(_WinAPI_GetString($pBuffer) & @crlf & "--------------------------------" & @crlf) $pBuffer = 0 EndFunc ; _Method_2 ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _ShowInfo($msg) if $debug then ConsoleWrite($msg) GUICtrlSetData($hRecEdit, GUICtrlRead($hRecEdit) & $msg) Local $iEnd = StringLen(GUICtrlRead($hRecEdit)) _GUICtrlEdit_SetSel($hRecEdit, $iEnd, $iEnd) _GUICtrlEdit_Scroll($hRecEdit, $SB_SCROLLCARET) Endfunc ; _ShowInfo ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _myExit() _WinAPI_CloseHandle($hProcessOther) ProcessClose($PIDAppOther) GUIDelete() exit Endfunc ; _myExit ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _DumpStruct($p_STRUCT, $iSizeStruct) ; $iSizeStruct = the size of the struct in bytes (DllStructGetSize) Local $TagStructDump = "struct;align;byte[" & $iSizeStruct & "];endstruct" Local $t_Struct = DllStructCreate($TagStructDump, $p_STRUCT) Local $i Local $structInfo = "" _ConsoleWriteInfo($structInfo, "Structure size: " & $iSizeStruct & " byte(s):" & @crlf) for $i = 0 to $iSizeStruct - 1 _ConsoleWriteInfo($structInfo, hex(DllStructGetData($t_Struct, 1, $i), 2) & " ") if (Mod($i+1, 8) = 0) then _ConsoleWriteInfo($structInfo, @CRLF) Endif Next _ConsoleWriteInfo($structInfo, @CRLF) return $structInfo EndFunc ; _DumpStruct ; ooooooooooooooooooooooooooooooooooooooooooooooooooooooo Func _ConsoleWriteInfo(ByRef $msg, $txt) $msg &= $txt EndFunc ; _ConsoleWriteInfo The ISSUE : systematically, the 3 first bytes received are 'corrupted' !!! ??? NOTE: You must repeat several times sending the same string to check that bytes sent" and "bytes received" are equal EXCEPT the 3 first ones ! I'm quite sure that my code is somewhere wrong ! BUT I'm not able to discover myself WHERE ! I have tried to use 2 methods to read and save the external memory bytes (using the '_WinAPI_CreateBuffer' function, and the 'DllStructCreate' function) --> BOTH give me back the same issue. --> So I suspect that my understanding of the '_WinAPI_ReadProcessMemory' function is maybe wrong and I do not correctly call this API. ??? Is it correct if I say, [according the MSDN 's ReadProcessMemory explanation or the #include <WinAPI.au3> library code of this function] : - the base address of memory to be read is the pointer received from my private WM handler --> i.e. $wParam (regarding my script receiver code) - the buffer pointer where to save bytes read (starting from $wParam) is the pointer created using '_WinAPI_CreateBuffer' or 'DllStructCreate + DllStructGetPtr' functions - the number of bytes to be read is the information provided by the $lParam variable (regarding my script receiver code) - AND of course, the external memory base-address will only be readable if the 'ipc-sender' application handler is correctly declared ($hProcessOther = _WinAPI_OpenProcess($PROCESS_VM_READ, False, $PIDAppOther)). There is probably other methods to share strings between cooperating applications, and surely more simple and elegant ones, BUT I'm focusing on these scripts where in fact the types of data to share are not limited to the 'String' type, but could concern any kind of structure. Any advice or help to explain me what happens would be welcome. Great Thanks in advance for your time passed to help me... Alain. These are my environment characteristics: AutoIT : 3.3.14.2 OS: Windows 7 Home Premium Service Pack 1 / 7601 ipc_receiver.au3 ipc_sender.au3

Hello everyone. Yet I face another DllCall (maybe DllStruct?) problem here, could someone please guide me, here's the code: #include Global Const $hDllBthProps = DllOpen("bthprops.cpl") Func _BluetoothFindFirstDevice() $tBLUETOOTH_DEVICE_SEARCH_PARAMS = DllStructCreate('DWORD;BOOL;BOOL;BOOL;BOOL;BOOL;BYTE;HANDLE') DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 1 , DllStructGetSize($tBLUETOOTH_DEVICE_SEARCH_PARAMS)) DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 2 , False) DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 3 , False) DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 4 , True) DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 5 , False) DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 6 , True) DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 7 , 30) DllStructSetData($tBLUETOOTH_DEVICE_SEARCH_PARAMS, 8 , Null) $SYSTEMTIME=DllStructCreate("ushort wYear;ushort wMonth;ushort wDayOfWeek;ushort wDay;ushort wHour;ushort wMinute;ushort wSecond;ushort wMilliseconds") DllCall("Kernel32.dll","none","GetSystemTime","ptr",DllStructGetPtr($SYSTEMTIME)) $tBLUETOOTH_DEVICE_INFO = DllStructCreate('DWORD;ULONG;ULONG;BOOL;BOOL;BOOL;ptr;ptr;WCHAR') DllStructSetData($tBLUETOOTH_DEVICE_INFO,1,DllStructGetSize($tBLUETOOTH_DEVICE_INFO)) DllStructSetData($tBLUETOOTH_DEVICE_INFO,7,DllStructGetPtr($SYSTEMTIME)) DllStructSetData($tBLUETOOTH_DEVICE_INFO,8,DllStructGetPtr($SYSTEMTIME)) $RESULT = DllCall($hDllBthProps, "handle", "BluetoothFindFirstDevice", "struct*", $tBLUETOOTH_DEVICE_SEARCH_PARAMS, "struct*", $tBLUETOOTH_DEVICE_INFO) msgbox(64, "", 'Result: ' & $RESULT[0] & @crlf & 'WinAPI Error: ' & _WinAPI_GetLastErrorMessage() & @crlf & 'Error: ' & @error) EndFunc _BluetoothFindFirstDevice() The function doesn't seem to work, even though I have enabled and paired up my laptop and computer's bluetooth. Thanks.

Hello voluntary posters I got a question about autoit that I've been unable to find a straight yes or no answer on in the documentation I've read. Well I've been learning C++ lately and I've found that structures are a big deal and very ways of storing variables. Now I can finally understand why in all the advanced programming in autoit they include so many 'Dllcreatestruct' type commands. My question is that, how is it possible to create functions that pass that data created from the dllcreatestruct. Isn't it good programming technique to create as few global variables as possible? Please correct me if I'm wrong (I haven't been a programmer all that long) I think that the best way to use these are to pass them to and from functions. How do I do that? Also, I was wondering how can I make functions like in C++ that demand certain types of data? i.e. A function that will demand a specific structure type, otherwise will fail to run. Thanks in advance for the knowledge guys.