--- loncom/homework/lonhomework.pm	2003/04/30 21:27:57	1.120
+++ loncom/homework/lonhomework.pm	2003/05/08 15:33:15	1.121
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler
 #
-# $Id: lonhomework.pm,v 1.120 2003/04/30 21:27:57 albertel Exp $
+# $Id: lonhomework.pm,v 1.121 2003/05/08 15:33:15 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -50,6 +50,7 @@ use Apache::essayresponse();
 use Apache::externalresponse();
 use Apache::rankresponse();
 use Apache::matchresponse();
+use Apache::chemresponse();
 use Apache::Constants qw(:common);
 use HTML::Entities();
 use Apache::loncommon();
@@ -207,12 +208,15 @@ sub check_access {
     $datemsg = "was due on $lastdate, and answers will be available on $date";
   }
   if ($status eq 'CAN_ANSWER') {
-    #check #tries
+    #check #tries, and if correct.
     my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
     my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
     if ( $tries eq '' ) { $tries = '0'; }
     if ( $maxtries eq '' ) { $maxtries = '2'; } 
     if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } 
+    if($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/) {
+	$status = 'CANNOT_ANSWER';
+    }
   }
 
   if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&