1 files changed, 2 insertions, 0 deletions
diff --git a/include/window.h b/include/window.h
index 3cb904626..1c3d9be9c 100644
--- a/include/window.h
+++ b/include/window.h
@@ -41,6 +41,8 @@ struct WindowTemplate
     0,                              \
 }
 
+#define WINDOW_NONE 0xFF
+
 struct Window
 {
     struct WindowTemplate window;