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This is a discussion on threads within the C Programming forums, part of the General Programming Boards category; hi, whene i have an error or warning like this '_beginthreadex' undefined; assuming extern returning int, so what`s this means ...

  1. #1
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    hi, whene i have an error or warning like this '_beginthreadex' undefined; assuming extern returning int,
    so what`s this means and how can i resolve it?

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    It means you have not included the header file for that function. In this case, the header you need is process.h.

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    Quote Originally Posted by bithub View Post
    It means you have not included the header file for that function. In this case, the header you need is process.h.
    sorry but already it`s included , i know that`s needed and for this reason it`s a stranger for me this warring msg

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    In that case, you are not using the multi-threaded version of the CRT. Setting this is dependent upon your compiler, but it should be in your IDE project settings somewhere.

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