title: Checking for existence of Windows API Functions
body: <p>I am new to Windows programming and I'm trying to discover the best way to check for the existence of Windows Shell API functions. I want to use some of the new taskbar features in Windows7.</p>
  
  <p><a href="https://msdn.microsoft.com/en-us/library/dd378460%28VS.85%29.aspx#custom_jump_lists" rel="nofollow noreferrer">https://msdn.microsoft.com/en-us/library/dd378460%28VS.85%29.aspx#custom_jump_lists</a></p>
  
  <p>But I still want my program to be usable by previous versions of Windows. Is there an easy way to know if the functions are available to be called in the end users system. I'm programming in C++.</p>