I got error LNK2019

This is a discussion on I got error LNK2019 within the Windows Programming forums, part of the Platform Specific Boards category; when I tried to do the tutorial at http://www.cprogramming.com/tutorial...l_program.html I got 21 errors, all of them are the same: OpenGL.obj ...

  1. #1
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    I got error LNK2019

    when I tried to do the tutorial at http://www.cprogramming.com/tutorial...l_program.html

    I got 21 errors, all of them are the same: OpenGL.obj : error LNK2019: unresolved external symbol

    I don't know what does that mean, I thought I followed all in the tutorial

    I'm using VisualC++ 2008

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
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    It seems that you haven't linked against the correct .lib file for opengl.
    It can be specified under project options -> linker -> input.
    However, I'm unsure what file you should link against.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  3. #3
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    thanks Elysia, I got no more error messages

    but the program didn't render a thing, it only renders the screen to the specified color at glClearColor() but I didn't see any object


    (so much for typing all that code... it made my hands tired for not copy-paste it )

  4. #4
    C++まいる!Cをこわせ! Elysia's Avatar
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    Ah, unfortunately, I'm not graphics export. I hardly know anything about 2D/3D, much less D3D and OpenGL...
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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