Add SetIsChecked to AvnAppMenuItem

native/Avalonia.Native/inc/avalonia-native.h

@@ -407,6 +407,7 @@ AVNCOM(IAvnAppMenuItem, 19) : IUnknown
     virtual HRESULT SetTitle (void* utf8String) = 0;
     virtual HRESULT SetGesture (void* utf8String, AvnInputModifiers modifiers) = 0;
     virtual HRESULT SetAction (IAvnPredicateCallback* predicate, IAvnActionCallback* callback) = 0;
+    virtual HRESULT SetIsChecked (bool isChecked) = 0;
 };
 
 extern "C" IAvaloniaNativeFactory* CreateAvaloniaNative();

native/Avalonia.Native/src/OSX/menu.h

@@ -46,6 +46,8 @@ public:
     
     virtual HRESULT SetAction (IAvnPredicateCallback* predicate, IAvnActionCallback* callback) override;
     
+    virtual HRESULT SetIsChecked (bool isChecked) override;
+    
     bool EvaluateItemEnabled();
     
     void RaiseOnClicked();

native/Avalonia.Native/src/OSX/menu.mm

@@ -110,6 +110,12 @@ HRESULT AvnAppMenuItem::SetAction (IAvnPredicateCallback* predicate, IAvnActionC
     return S_OK;
 }
 
+HRESULT AvnAppMenuItem::SetIsChecked (bool isChecked)
+{
+    [_native setState:(isChecked ? NSOnState : NSOffState)];
+    return S_OK;
+}
+
 bool AvnAppMenuItem::EvaluateItemEnabled()
 {
     if(_predicate != nullptr)