diff --git a/iocallback.c b/iocallback.c
index dba7235..5976636 100644
--- a/iocallback.c
+++ b/iocallback.c
@@ -182,7 +182,27 @@ static gboolean IO_check(GSource *source)
 	 */
 #ifdef _WIN32
 
-	#error AQUI
+	fd_set rfds, wfds, xfds;
+	struct timeval tm;
+
+	memset(&tm,0,sizeof(tm));
+
+	FD_ZERO(&rfds);
+	FD_ZERO(&wfds);
+	FD_ZERO(&xfds);
+
+	if(((IO_Source *) source)->poll.events & G_IO_IN)
+	{
+		FD_SET(((IO_Source *) source)->poll.fd, &rfds);
+	}
+
+	if(((IO_Source *) source)->poll.events & G_IO_OUT)
+	{
+		FD_SET(((IO_Source *) source)->poll.fd, &wfds);
+	}
+
+	if(select(((IO_Source *) source)->poll.fd+1, &rfds, &wfds, &xfds, &tm) > 0)
+		return TRUE;
 
 #else
 
--
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