gdk_input_add and cygwin

[Markus Lausser <sgop users sourceforge net>]

Hello.

I have a problem with the function
  gdk_input_add(fd, GDK_INPUT_WRITE,
                GTK_SIGNAL_FUNC(my_func), my_data);
on cygwin.
fd is a connected socket descriptor.
The problem is that my_func is never called.
* If i replace gdk_input_add with select and a manual
  call of my_func, it works fine.
* gdk_input_add() with flag GDK_INPUT_READ works fine.
* On Linux/Unix, the above works fine.

Anyone has a clue what is going on here?

Markus.