keyboard ding sound if keyboard event wasnt handled

src/Avalonia.Native.OSX/window.mm

@@ -92,6 +92,7 @@ protected:
     NSTrackingArea* _area;
     bool _isLeftPressed, _isMiddlePressed, _isRightPressed, _isMouseOver;
     NSEvent* _lastMouseDownEvent;
+    bool _lastKeyHandled;
 }
 
 - (NSEvent*) lastMouseDownEvent
@@ -312,7 +313,12 @@ protected:
     auto timestamp = [event timestamp] * 1000;
     auto modifiers = [self getModifiers:[event modifierFlags]];
     
-    _parent->BaseEvents->RawKeyEvent(type, timestamp, modifiers, Delete);
+    _lastKeyHandled = _parent->BaseEvents->RawKeyEvent(type, timestamp, modifiers, Delete);
+}
+
+- (BOOL)performKeyEquivalent:(NSEvent *)event
+{
+    return _lastKeyHandled;
 }
 
 - (void)keyDown:(NSEvent *)event

src/Avalonia.Native/WindowImplBase.cs

@@ -106,9 +106,9 @@ namespace Avalonia.Native
                 _parent.RawMouseEvent(type, timeStamp, modifiers, point, delta);
             }
 
-            public void RawKeyEvent(AvnRawKeyEventType type, uint timeStamp, AvnInputModifiers modifiers, uint key)
+            public bool RawKeyEvent(AvnRawKeyEventType type, uint timeStamp, AvnInputModifiers modifiers, uint key)
             {
-                _parent.RawKeyEvent(type, timeStamp, modifiers, key);
+                return _parent.RawKeyEvent(type, timeStamp, modifiers, key);
             }
         }
 
@@ -118,9 +118,13 @@ namespace Avalonia.Native
         
         }
 
-        public void RawKeyEvent(AvnRawKeyEventType type, uint timeStamp, AvnInputModifiers modifiers, uint key)
+        public bool RawKeyEvent(AvnRawKeyEventType type, uint timeStamp, AvnInputModifiers modifiers, uint key)
         {
-            Input?.Invoke(new RawKeyEventArgs(_keyboard, timeStamp, (RawKeyEventType)type, (Key)key, (InputModifiers)modifiers));
+            var args = new RawKeyEventArgs(_keyboard, timeStamp, (RawKeyEventType)type, (Key)key, (InputModifiers)modifiers);
+
+            Input?.Invoke(args);
+
+            return args.Handled;
         }
 
         public void RawMouseEvent(AvnRawMouseEventType type, uint timeStamp, AvnInputModifiers modifiers, AvnPoint point, AvnVector delta)

src/headers/avalonia-native.h

@@ -98,7 +98,7 @@ AVNCOM(IAvnWindowBaseEvents, 04) : IUnknown
                                 AvnPoint point,
                                 AvnVector delta) = 0;
     
-    virtual void RawKeyEvent (AvnRawKeyEventType type, unsigned int timeStamp, AvnInputModifiers modifiers, unsigned int key) = 0;
+    virtual bool RawKeyEvent (AvnRawKeyEventType type, unsigned int timeStamp, AvnInputModifiers modifiers, unsigned int key) = 0;
 };