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  1. November 29th, 2008, 01:57 PM #1
    lorenz123
    lorenz123 is offline Junior Member
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    plz help with a c++ macro

    can someone please explain the meaning/purpose of this macro?

    #define myMacro(a, b) ( (int) &( ( ( a * ) 0 )->b ) )


    Thanks!!
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  2. November 29th, 2008, 02:07 PM #2
    laserlight
    laserlight is offline Elite Member Power Poster
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    Re: plz help with a c++ macro

    In what context did you see this used? I cannot really discern its purpose as it looks like it may involve dereferencing a null pointer.
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  3. November 29th, 2008, 02:54 PM #3
    Richard.J
    Richard.J is offline Senior Member
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    Re: plz help with a c++ macro

    this looks pretty much like the "offsetof" macro/function in C
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  4. November 30th, 2008, 09:48 PM #4
    Peter_APIIT
    Peter_APIIT is offline Senior Member
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    Re: plz help with a c++ macro

    http://72.14.235.132/search?q=cache:...&gl=my&strip=1
    Thanks for your help.
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