WTL Subclassing

I'm trying to subclass an edit control using WTL. I am using this article for instruction

http://www.codeproject.com/wtl/subcl...ditcontrol.asp

So, basically, what I have, is a bunch of edit boxes that I create from a rc template, and my edit control subclass (in the article, this is CEditEnterAsTabT, in my code it's CEditArrowsT), and when I try to AttachToDlgItem (actually subclass the edit controls) in my dialogs OnInitDlg routine.

AttachToDlgItem

Code:

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        BOOL AttachToDlgItem(HWND parent, UINT dlgID)
        {
                m_dlgItem = dlgID;
                m_parent = parent;
                m_hWnd = ::GetDlgItem(parent, dlgID);
               
                return SubclassWindow(m_hWnd);
        }

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In this method, SubclassWindow in the failiure. On MSDN it comments

Quote:

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Do not call SubclassWindow if you have already called Create.

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But I don't call create, they're dialog elements programmed into the resource script. This comment is the only reason I can see for failure, is there anyway I might get around it? I might try hardcoding the edit controls into the dialog if there isn't but that seems very inconvenient.

I get error 1400 - ERROR_INVALID_WINDOW_HANDLE: Invalid window handle for each and every time I tryh it. Here is essentially the code for my dialog

Code:

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class WtlKbdCtrlsDlg :
        public CDialogImpl<WtlKbdCtrlsDlg>,
        public CDialogResize<WtlKbdCtrlsDlg>,
        public CMessageFilter
{
        WtlWindow * parent;
        CEditArrowsT<CWindow> * arr;

public:

        enum { IDD = IDD_KBDCTRLS };

        BEGIN_MSG_MAP(CAboutDlg)
                MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)
                MESSAGE_HANDLER(WM_CLOSE, OnClose)
                COMMAND_ID_HANDLER(IDOK, OnOKCancel)
        END_MSG_MAP()

        virtual BOOL PreTranslateMessage(MSG * msg)
        {
                return IsDialogMessage(msg);
        }

        LRESULT OnInitDialog(UINT msg, WPARAM wparam, LPARAM lparam, BOOL & handled)
        {
                arr = new CEditArrowsT<CWindow>[16];
                for(int i = 0; i < 16; ++i)
                {
                        if(!arr[i].AttachToDlgItem(this->m_hWnd, IDC_NYAW + i))
                        {
                                DWORD err = ::GetLastError(); // Always 1400
                        }
                }

                CenterWindow();
                _Module.GetMessageLoop()->AddMessageFilter(this);

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Here;s the rest

http://zxcvbn.googlecode.com/svn/trunk/wtltrip/WtlDlg.h
http://zxcvbn.googlecode.com/svn/trunk/wtltrip/