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    <p>You have evidently neglected to include the library that defines several functions of the <code>wxRegKey</code> class. That's what the linker says it can't find. Are you sure <em>logger.cpp</em> defines <code>wxRegKey</code> <em>and</em> all of its methods?</p> <p>I suspect your source code doesn't actually <em>define</em> anything related to <code>wxRegKey</code> since that's actually a class from an external library. Rather than <em>defining</em> that class, you've <em>included</em> a header file where that class is declared. The <em>definition</em> resides in an external file, and you need to tell your build system which file that is.</p> <p>You have a <em>linking</em> error, not a <em>compiling</em> error, so the order of the <code>#include</code> statements is irrelevant. The compiler has already finished compiling everything by the time you see the errors you're reporting here. The compiler has converted your text source code into binary object code, and now the linker is trying to gather all the binary files together to form the final executable program. The binary files refer to some functions that the compiler was told would be defined somewhere else, and now the linker is trying to find those definitions, but it cannot.</p> <p>If you don't know where the functions are defined, or how to tell your build system where to find them, then you might have to post another question: What do I need to link with to use wxRegKey? How do I link with wxWidgets in a NetBeans project? I don't know the answers to those questions because I've never used those tools.</p>
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    1. USRob Kennedy
    1. USRob Kennedy
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    1. COi have a looger.h which i use in logger.cpp not aware of the sequence however i have got #include <wx/msw/registry.h> in logger.h
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      1. USLinda Harrison
    2. CO@LindaHarrison Rob Kennedy doesn't say you haven't do a header file inclusion - that would have resulted in a **compiler** error and not in a **linker** error.
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    3. COok i understood it ,@Rob:can u specify the library?
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