title: Issue with Graphviz - gvLayout() - Working with library
body: <p>I`m coding in C#. I'm sending the arguments below to the function
      gvLayout(gvc, g, layout)</p>
  
  <pre><code>IntPtr gvc = gvContext();
  
  // My string containing the graph
  IntPtr g = agmemread(source);
  
  string layout = "nop";
  </code></pre>
  
  <p>I have imported the dlls from graphviz's folder. </p>
  
  <p>I get the answer: </p>
  
  <pre><code>Error: Layout type: "nop" not recognized. Use one of:
  </code></pre>
  
  <p>So I tried:</p>
  
  <pre><code>string layout = "dot";
  </code></pre>
  
  <p>And got:
      Error: Layout type: "dot" not recognized. Use one of:</p>
  
  <p>The int return value of gvLayout(gvc, g, layout) I get is -1 (should be 0).</p>
  
  <hr>
  
  <p><strong>UPDATE:</strong> </p>
  
  <p>I put all dlls and config6 file into my project. Now I get the message 4 times and then nothing happens:</p>
  
  <p>"The program can't start because libglib-2.0-0.dll is missing from your computer. Try reinstalling the program to fix this problem."</p>
  
  <p>The thing is that the file is already there. I tried also adding a copy of that file to the folder System32 but it didn't work either.</p>
  
  <hr>
  
  <p>I've already read <a href="https://stackoverflow.com/questions/1955582/why-does-graphviz-fail-on-gvlayout">Why does Graphviz fail on gvLayout?</a> and couldn't reach a solution.</p>