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 fea
Yes you can always check for the existence of function within a library at runtime and take suitable actions. Check the LoadLibrary and GetProcAddress APIs. http://msdn.microsoft.com/en-us/library/ms683212(VS.85).aspx
LoadLibrary and GetProcAddress will be your friends.
Also, check out this tutorial.