class MyView:public Базовый класс
{
...
MyView(родитель и позиции);
~MyView();
}

MyView *view;
view=new MyView(тут указать родителя и позиции);

class SimpleControl
{
public:
	SimpleControl (HWND hwndParent, int id)
        : _hWnd (GetDlgItem (hwndParent, id))
    {}

    void SetFocus ()
    {
        ::SetFocus (_hWnd);
    }

    HWND Hwnd () const { return _hWnd; }

protected:
    HWND _hWnd;
};

class Edit: public SimpleControl
{
public:
    Edit (HWND hwndParent, int id)
        : SimpleControl (hwndParent, id)
    {}

    void SetString (char* buf)
    {
        SendMessage (Hwnd (), WM_SETTEXT, 0, (LPARAM) buf);
    }

    // code is the HIWORD (wParam)
    static BOOL IsChanged (int code)
    {
        return code == EN_CHANGE;
    }

    int GetLen ()
    {
        return SendMessage (Hwnd (), WM_GETTEXTLENGTH, 0, 0);
    }

    void GetString (char* buf, int len)
    {
        SendMessage (Hwnd (), WM_GETTEXT,
                      (WPARAM) len, (LPARAM) buf);
    }

    void Select ()
    {
        SendMessage (Hwnd (), EM_SETSEL, 0, -1);
    }
};

class Controller
{
public:
    Controller(HWND hwnd);
    ...
private:
    Edit    _edit;
    char    _string [maxLen];
};

Controller::Controller (HWND hwnd)
    : _edit (hwnd, IDC_EDIT)
{
    _edit.SetFocus ();
    ...
}

void Controller::Command (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
    switch (LOWORD(wParam))
    {
        case IDC_EDIT:
            if (_edit.IsChanged(HIWORD (wParam)))
            {
                _edit.GetString (_string, maxLen);
            }
            break;
        ...
    }
}