X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Ffreeglut_callbacks.c;h=2dd2232d53d67fe738b648533f0a54c76f94ab29;hb=1c741248e3ad67f24a57742cb5cc511f0ee87805;hp=f1f4b90ed1a44315498158cf7fcc13f81b6d6de7;hpb=c969a6321bc21d80fd9b993a6355e84f1bc880b8;p=freeglut

diff --git a/src/freeglut_callbacks.c b/src/freeglut_callbacks.c
index f1f4b90..2dd2232 100644
--- a/src/freeglut_callbacks.c
+++ b/src/freeglut_callbacks.c
@@ -131,6 +131,7 @@ static void fghVisibility( int status )
 {
     int glut_status = GLUT_VISIBLE;
 
+    FREEGLUT_INTERNAL_ERROR_EXIT_IF_NOT_INITIALISED ( "Visibility Callback" );
     freeglut_return_if_fail( fgStructure.Window );
 
     if( ( GLUT_HIDDEN == status )  || ( GLUT_FULLY_COVERED == status ) )