diff --git a/examples/SharedMemory/SharedMemoryUserData.h b/examples/SharedMemory/SharedMemoryUserData.h
new file mode 100644
index 000000000..a29f59eb0
--- /dev/null
+++ b/examples/SharedMemory/SharedMemoryUserData.h
@@ -0,0 +1,48 @@
+#ifndef SHARED_MEMORY_USER_DATA_H
+#define SHARED_MEMORY_USER_DATA_H
+
+#include <string>
+#include "LinearMath/btAlignedObjectArray.h"
+#include "SharedMemoryPublic.h"
+
+struct SharedMemoryUserData 
+{
+	std::string m_key;
+	int m_type;
+
+	btAlignedObjectArray<char> m_bytes;
+	
+	SharedMemoryUserData()
+		:m_type(-1)
+	{
+	}
+
+	// Takes ownership of the passed key and value arguments.
+	SharedMemoryUserData(const char* key)
+	:m_key(key)
+	{
+	}
+
+	// Takes ownership of the data pointed to by newValue.
+	void replaceValue(const char* bytes, int len, int type)
+	{
+		m_type = type;
+		m_bytes.resize(len);
+		for (int i=0;i<len;i++)
+		{
+			m_bytes[i] = bytes[i];
+		}
+	}
+
+	virtual ~SharedMemoryUserData()
+	{
+	}
+
+	void clear()
+	{
+		m_bytes.clear();
+		m_type = -1;
+	}
+};
+
+#endif //SHARED_MEMORY_USER_DATA_H