Pass reference data with _WinAPI_SetWindowSubclass

[Trolleule]

hi,

does someone know why i cant access the data of the structure? Or can someone explain, how to pass an array to _SubclassProc2.

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#include <WinAPIShellEx.au3>
#include <GUIConstantsEx.au3>
#include <GuiComboBox.au3>

OnAutoItExitRegister('OnAutoItExit')

; Create GUI
Local $hForm = GUICreate('Test ' & StringReplace(@ScriptName, '.au3', '()'))
Local $hCombo = _GUICtrlComboBox_Create($hForm, "", 2, 2, 396, 296)

; Register DLL callback that will be used as window subclass procedure
Local $hDll = DllCallbackRegister('_SubclassProc', 'lresult', 'hwnd;uint;wparam;lparam;uint_ptr;dword_ptr')
Local $pDll = DllCallbackGetPtr($hDll)
Local $hDll2 = DllCallbackRegister('_SubclassProc2', 'lresult', 'hwnd;uint;wparam;lparam;uint_ptr;dword_ptr')
Local $pDll2 = DllCallbackGetPtr($hDll2)

Local $test = 1

; Install window subclass callback
_WinAPI_SetWindowSubclass($hForm, $pDll, 1000, 0)

GUISetState(@SW_SHOW)


Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE



Func _SubclassProc($hWnd, $iMsg, $iwParam, $ilParam, $ID, $pData)
    #forceref $ID, $pData

    If $test Then
        Local $struct = DllStructCreate("wchar[5];wchar[6];wchar[4]")
        DllStructSetData($struct, 1, "test")
        DllStructSetData($struct, 2, "hallo")
        DllStructSetData($struct, 3, "gih")
        ConsoleWrite("pointer: " & DllStructGetPtr($struct) & @CRLF)
        _WinAPI_SetWindowSubclass($hCombo, $pDll2, 1001, DllStructGetPtr($struct))
        $test = 0
    EndIf


    Return _WinAPI_DefSubclassProc($hWnd, $iMsg, $iwParam, $ilParam)
EndFunc   ;==>_SubclassProc


Func _SubclassProc2($hWnd, $iMsg, $iwParam, $ilParam, $ID, $pData)
    #forceref $ID, $pData

    Local $point = Ptr($pData)
    Local $struct = DllStructCreate("wchar[5];wchar[6];wchar[4]", $point)
    ConsoleWrite("data1: " & DllStructGetData($struct, 1) & " data2: " & DllStructGetData($struct, 2) & " data3: " & DllStructGetData($struct, 3) & " $pData: " & $pData & " Ptr: " & Ptr($pData) & @CRLF)
    ConsoleWrite("Hwnd: " & $hWnd & " $iMsg: " & $iMsg & " $iwParam: " & $iwParam & " $ilParam: " & $ilParam & @CRLF)
    $struct = 0

;~  _WinAPI_RemoveWindowSubclass($hCombo, $pDll2, 1001)
    Return _WinAPI_DefSubclassProc($hWnd, $iMsg, $iwParam, $ilParam)
EndFunc     ;==>_SubclassProc


Func OnAutoItExit()
    _WinAPI_RemoveWindowSubclass($hCombo, $pDll2, 1001)
    _WinAPI_RemoveWindowSubclass($hForm, $pDll, 1000)
    DllCallbackFree($hDll)
    DllCallbackFree($hDll2)
EndFunc   ;==>OnAutoItExit

[Trolleule]

Sorry if i missed some informations. I don't get it work. The _SubclassProc2 procedure catches the messages from the ComboBox control, $pData contains the pointer to the structure, which i passed with _WinAPI_SetWindowSubclass($hCombo, $pDll2, 1001, DllStructGetPtr($struct)) in the form procedure, but although the pointer is equal, the data is different. Sometimes it reads the data properly and sometimes only one of the elements is properly.

Has someone an idea please?

Edited August 11, 2014 by Trolleule

[Trolleule]

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