Frees memory allocated by AllocPtr( ).
void WINAPI FreePtr ( LPVOID lpvPtr )
{
HGLOBAL hMem;
if (( hMem = (HGLOBAL)LOWORD(GlobalHandle( SELECTOROF(lpvPtr)))) != NULL)
{
if (!(GlobalUnlock (hMem)))
GlobalFree (hMem);
}
}