simple question on Class-Members

[mickey]

Hi, I have a question:

class DOOR {
           public:
           ........
           draw();
}

class DOOR {
           public:
           ........
           draw();
}

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class build {
          public:
          ........
          std::vector<DOOR> door;
          QImage imm;
};

class build {
          public:
          ........
          std::vector<DOOR> door;
          QImage imm;
};

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I need to use variable imm within member draw(). How can I do?
Thanks