return nsComponentManager::CreateInstance( NS_DIALOGPARAMBLOCK_CONTRACTID, 0, NS_GET_IID(nsIDialogParamBlock), (void**) &mBlock);
return CallCreateInstance(NS_DIALOGPARAMBLOCK_CONTRACTID, &mBlock);
  nsresult Init() {    return nsComponentManager::CreateInstance(                                 NS_DIALOGPARAMBLOCK_CONTRACTID,                                 0, NS_GET_IID(nsIDialogParamBlock),                                 (void**) &mBlock);  }