WinRT: made a note that WinRT doesn't appear to support modifying a thread's priority
diff --git a/src/thread/stdcpp/SDL_systhread.cpp b/src/thread/stdcpp/SDL_systhread.cpp
index c580481..02fcf76 100644
--- a/src/thread/stdcpp/SDL_systhread.cpp
+++ b/src/thread/stdcpp/SDL_systhread.cpp
@@ -99,6 +99,14 @@ SDL_SYS_SetThreadPriority(SDL_ThreadPriority priority)
// interface, at least as of this writing (Nov 2012). std::thread does
// provide access to the OS' native handle, however, and some form of
// priority-setting could, in theory, be done through this interface.
+ //
+ // WinRT: UPDATE (Aug 20, 2013): thread priorities cannot be changed
+ // on WinRT, at least not for any thread that's already been created.
+ // WinRT threads appear to be based off of the WinRT class,
+ // ThreadPool, more info on which can be found at:
+ // http://msdn.microsoft.com/en-us/library/windows/apps/windows.system.threading.threadpool.aspx
+ //
+ // For compatibility sake, 0 will be returned here.
return (0);
}