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diff --git a/bundles/org.eclipse.swt.win32.win32.x86_64/library/callback.h b/bundles/org.eclipse.swt.win32.win32.x86_64/library/callback.h
new file mode 100644
index 000000000..a9bc844c7
--- /dev/null
+++ b/bundles/org.eclipse.swt.win32.win32.x86_64/library/callback.h
@@ -0,0 +1,71 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+ 
+/**
+ * Callback implementation.
+ */
+#ifndef INC_callback_H
+#define INC_callback_H
+
+#include "swt.h"
+
+#if defined (_WIN32) || defined (_WIN32_WCE)
+#include "windows.h"
+#define RETURN_TYPE LRESULT CALLBACK
+#define RETURN_CAST (LRESULT)
+#endif
+
+#if defined COCOA
+#import <Foundation/Foundation.h>
+#endif
+
+#ifndef RETURN_TYPE
+#define RETURN_TYPE jintLong
+#endif
+
+#ifndef RETURN_CAST
+#define RETURN_CAST
+#endif
+
+/*
+* Note that only x86 assembler is supported
+*/
+#if !(defined(__i386__) || defined(_M_IX86) || defined(_X86_))
+#undef USE_ASSEMBLER
+#endif
+
+#ifdef REDUCED_CALLBACKS
+#define MAX_CALLBACKS 16
+#else
+#if (defined(USE_ASSEMBLER) || defined(GTK))
+#define MAX_CALLBACKS 256
+#else
+#define MAX_CALLBACKS 128
+#endif
+#endif /* REDUCED_CALLBACKS */
+
+#define MAX_ARGS 12
+
+typedef struct CALLBACK_DATA {
+    jobject callback;
+    jmethodID methodID;
+  	jobject object;
+	jboolean isStatic;
+	jboolean isArrayBased; 
+	jint argCount;
+	jintLong errorResult;
+} CALLBACK_DATA;
+
+#endif /* ifndef INC_callback_H */
+