diff -r 000000000000 -r 804d8803eade ui/wpf/UIwrapper/UIwrapper/toolkit.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/wpf/UIwrapper/UIwrapper/toolkit.h	Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,42 @@
+// UIwrapper.h
+
+#pragma once
+
+#include <vcclr.h>
+
+using namespace System;
+using namespace System::Runtime::InteropServices;
+using namespace System::Threading;
+using namespace System::Windows;
+using namespace System::Windows::Controls;
+
+#define UI_EXPORT extern "C" __declspec(dllexport)
+
+extern "C" typedef void(*UIcallback)(void*, void*);
+
+void* ObjectToPtr(Object ^obj);
+Object^ PtrToObject(void *ptr);
+
+public ref class ObjEventWrapper {
+	UIcallback callback = NULL;
+	void *eventdata = NULL;
+	Action<IntPtr> ^action;
+
+public:
+	ObjEventWrapper(UIcallback callback, void *eventdata);
+
+	Action<IntPtr>^ GetAction();
+
+	void Callback(IntPtr uiobj);
+};
+
+public ref class EventWrapper {
+	UIcallback callback = NULL;
+	void *eventdata = NULL;
+	
+
+public:
+	EventWrapper(UIcallback callback, void *eventdata);
+	void Callback(Object ^sender, RoutedEventArgs ^e);
+};
+