1 files changed, 1 insertions, 0 deletions
diff --git a/glcore.h b/glcore.h
index 48748d9..9626dc6 100644
--- a/glcore.h
+++ b/glcore.h
@@ -49,6 +49,7 @@
 #define GL_CORE_SGI  1
 #define GL_CORE_MESA 2
 #define GL_CORE_APPLE 4
+#define GL_CORE_WINDOWS 8
 
 typedef struct __GLcontextRec __GLcontext;
 typedef struct __GLinterfaceRec __GLinterface;