husband's parents

Is it the duty of the husband's parents to see to the needs of his wife and children?

Q: I would like to know if a husband in Islam is not financially capable of taking care of his wife and children. Does it become his parents responsibility to take care of their needs? Is it okay for man to marry a woman if he does not have a Job and he knows he can't support her? Would it then also be his parents responsibility to take care of them financially, even though he knew going into the marriage that he won't be able to support her?