1 files changed, 7 insertions, 0 deletions
diff --git a/include/cru/platform/gui/Base.hpp b/include/cru/platform/gui/Base.hpp
index 7a9d1889..fd9d265c 100644
--- a/include/cru/platform/gui/Base.hpp
+++ b/include/cru/platform/gui/Base.hpp
@@ -31,6 +31,13 @@ struct NativeMouseButtonEventArgs {
   KeyModifier modifier;
 };
 
+struct NativeMouseWheelEventArgs {
+  // Positive means down. Negative means up. 
+  float delta;
+  Point point;
+  KeyModifier modifier;
+};
+
 struct NativeKeyEventArgs {
   KeyCode key;
   KeyModifier modifier;