Hooking Problem

LRESULT CALLBACK HookProcedure(int nCode, WPARAM wparam, LPARAM lparam)
{

    if (nCode < 0) return CallNextHookEx(0, nCode, wparam, lparam);
    time_t  timev;
    std::ofstream outfile;
    CBT_CREATEWND   *CBTHOOKCREATE = NULL;
    CBT_CREATEWNDW  *CBTHOOKCREATEW = NULL;
    CREATESTRUCTW   *CBTHOOKCREATESTRW = NULL;
    RECT            *CBTRECTPTR;
    RECT            CBTRECT;
    wstring         Message;

//none of these work!
    if (IsWindowUnicode((HWND) wparam))
    {
        CBTHOOKCREATEW = (CBT_CREATEWNDW*) lparam;
        CBTHOOKCREATESTRW = (CREATESTRUCTW*) lparam;
    }
    else
    {
        CBTHOOKCREATE = (CBT_CREATEWND*) lparam;
    }

    outfile.open(("d:\\test.txt"), std::ios_base::app);

    if (nCode >= 0) {
        switch (nCode)
        {
        case HCBT_CREATEWND://when i run the application after installing the hook! my explorer crashes!!
            outfile << CBTHOOKCREATEW->lpcs->lpszName << " is Created! " << CBTHOOKCREATESTRW->lpszName << endl;
            break;
        case HCBT_DESTROYWND:
            //outfile << CBTHOOKCREATE->lpcs->lpszName << " " << CBTHOOKCREATEW->lpcs->lpszName << " is Destroyed!" << time(&timev) << endl;
            break;
        default:
            break;
        }
    }
    outfile.close();
    return 0;
}

void InstallHook(void)
{
    hookID = SetWindowsHookEx(WH_CBT, HookProcedure, currentProcessHandle, 0);
}

void UninstallHook(void)
{
    UnhookWindowsHookEx(hookID);
}