title: How to call a Windows DLL from within Ruby?
body: <p>What is the easiest way to use a custom DLL from within Ruby ? </p>
  
  <p>In Python I would use <em>ctypes</em>, just as described as in this <a href="https://stackoverflow.com/a/3173926/740316">example</a>. But now how should I do it in Ruby, preferably using native functionalities over third party libs ? Is there any way Ruby can be as simple as Python for manipulating a DLL ? </p>
  
  <p>Thank you o/</p>