title: Error message: "KHR/khrplatform.h" cannot be opened, but "khrplatform" does not exist anywhere within the program
body: <p>I am trying to open a window in OpenGL. In Visual Studio, I set an include directory with all my header files, such as glfw3.h and glad.h. My include statements are properly formatted:</p>
  
  <pre><code>#include &lt;glad/glad/glad.h&gt;
  #include &lt;GLFW/glfw3.h&gt; 
  </code></pre>
  
  <p>There is an extra "glad/" because in the file explorer there is an extra glad folder. Another header file contained within the include folder is "khrplatform.h". This is the directory sequence:</p>
  
  <blockquote>
    <p>include/glad/KHR/khrplatform.h</p>
  </blockquote>
  
  <p>Here is the code I wrote to open the window:</p>
  
  <pre><code>#include &lt;glad/glad/glad.h&gt;
  #include &lt;GLFW/glfw3.h&gt; 
  
  
  int main() {
  glfwInit(); //initializes the openGL window
  
  glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); //This line and the next set the desired version of glfw (major.minor)
  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); 
  glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); //sets openGL to the core profile (fewer functions)
  
  return 0;
  }
  </code></pre>
  
  <p>There is also a glad.c file in my visual studio project that is necessary for the window opening programming. The error message I get specifies the error as in the glad.c file. Here is the error:</p>
  
  <pre><code>1&gt;------ Build started: Project: OpenGL_SampleProject, Configuration: Debug Win32 ------
  1&gt;glad.c
  1&gt;c:\users\david\documents\opengl\libs_include\include\glad\glad\glad.h(95): fatal error C1083: Cannot open include file: 'KHR/khrplatform.h': No such file or directory
  1&gt;Done building project "OpenGL_SampleProject.vcxproj" -- FAILED.
  </code></pre>
  
  <p>The problem is that the text "khrplatform.h" doesn't appear in glad.c at all. So I have no idea where the bug is originating from. Can someone with experience setting up and using OpenGL answer this for me?</p>