+ HANDLE h = (HANDLE)_get_osfhandle(fd);
+
+ if ( h != INVALID_HANDLE_VALUE ) {
+ /* If the 'fd' isn't connected to a console; treat the flush
+ * operation as a NOP.
+ */
+ DWORD unused;
+ if ( !GetConsoleMode(h,&unused) &&
+ GetLastError() == ERROR_INVALID_HANDLE ) {
+ return 0;
+ }