diff -r 000000000000 -r 2483f517c562 ui/wpf/UIwrapper/UIwrapper/toolkit.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/wpf/UIwrapper/UIwrapper/toolkit.cpp	Sun Jan 21 16:30:18 2024 +0100
@@ -0,0 +1,127 @@
+// Dies ist die Haupt-DLL.
+
+#include "stdafx.h"
+#include <stdio.h>
+
+#include "toolkit.h"
+
+#using "UIcore.dll"
+
+static UIcallback startup_func;
+void              *startup_data;
+static UIcallback open_func;
+void              *open_data;
+static UIcallback exit_func;
+void              *exit_data;
+
+public ref class AppCallbacks : public UI::IApplicationCallbacks {
+public:
+	UIcallback startupFunc = NULL;
+	void       *startupData = NULL;
+	UIcallback openFunc = NULL;
+	void       *openData = NULL;
+	UIcallback exitFunc = NULL;
+	void       *exitData = NULL;
+
+	virtual void __clrcall OnStartup() {
+		if (startupFunc) {
+			startupFunc(NULL, startupData);
+		}
+	}
+	virtual void __clrcall OnOpen() {
+		if (openFunc) {
+			openFunc(NULL, openData);
+		}
+	}
+	virtual void __clrcall OnExit() {
+		if (exitFunc) {
+			exitFunc(NULL, exitData);
+		}
+	}
+};
+
+
+void* ObjectToPtr(Object ^obj) {
+	GCHandle handle = GCHandle::Alloc(obj);
+	IntPtr pointer = GCHandle::ToIntPtr(handle);
+	return pointer.ToPointer();
+}
+
+Object^ PtrToObject(void *ptr) {
+	GCHandle h = GCHandle::FromIntPtr(IntPtr(ptr));
+	Object^ object = h.Target;
+	//h.Free();
+	return object;
+}
+
+// EventWrapper
+
+ObjEventWrapper::ObjEventWrapper(UIcallback callback, void *eventdata) {
+	this->callback = callback;
+	this->eventdata = eventdata;
+	action = gcnew Action<IntPtr>(this, &ObjEventWrapper::Callback);
+}
+
+Action<IntPtr>^ ObjEventWrapper::GetAction() {
+	return action;
+}
+
+void ObjEventWrapper::Callback(IntPtr uiobj) {
+	if (callback) {
+		callback(uiobj.ToPointer(), eventdata);
+	}
+}
+
+
+EventWrapper::EventWrapper(UIcallback callback, void *eventdata) {
+	this->callback = callback;
+	this->eventdata = eventdata;
+}
+
+void EventWrapper::Callback(Object ^sender, RoutedEventArgs ^e) {
+	if (callback) {
+		callback(NULL, eventdata);
+	}
+}
+
+
+
+UI_EXPORT void __stdcall UIinit(char *appname) {
+	UI::Application ^app = UI::Application::GetInstance();
+	app->Name = gcnew String(appname);
+}
+
+UI_EXPORT void __stdcall UIonstartup(UIcallback f, void *userdata) {
+	startup_func = f;
+	startup_data = userdata;
+}
+
+UI_EXPORT void __stdcall UIonopen(UIcallback f, void *userdata) {
+	open_func = f;
+	open_data = userdata;
+}
+
+UI_EXPORT void __stdcall UIonexit(UIcallback f, void *userdata) {
+	exit_func = f;
+	exit_data = userdata;
+}
+
+UI_EXPORT void __stdcall UImain() {
+	AppCallbacks ^ac = gcnew AppCallbacks();
+	ac->startupFunc = startup_func;
+	ac->startupData = startup_data;
+	ac->openFunc = open_func;
+	ac->openData = open_data;
+	ac->exitFunc = exit_func;
+	ac->exitData = exit_data;
+	
+	UI::Application ^app = UI::Application::GetInstance();
+	app->callbacks = ac;
+
+	Thread ^thread = app->Start();
+	thread->Join();
+}
+
+UI_EXPORT void __stdcall UIshow(gcroot<UI::MainWindow^> *window) {
+	(*window)->ShowWindow();
+}