title: How import and use an external library in visual studio
body: <p>I want to use libxl library in visual studio, I know I have to add some terms in properties section of each project to use new library but the folder of this library (that I download it perviously) contains many sub-folders, So i don't know where should copy each sub-folder.</p>
  
  <p>The subfolders of the library's folder
  <a href="https://i.stack.imgur.com/3yRdl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3yRdl.png" alt="enter image description here"></a></p>
  
  <p>The two sub-folders -include_c and include_cpp- contains header files.</p>
  
  <p>The download link of this library is <a href="http://www.libxl.com/download.html" rel="nofollow noreferrer">http://www.libxl.com/download.html</a>.</p>
  
  <p>Please tell me how import library to visual studio.</p>