// DelegateArg.h

#pragma once


#include "XDWRTTI.hpp"


#ifndef _DELEGATEARG_DLL
#define DELEGATEARG_API	_declspec(dllimport)
#else
#define DELEGATEARG_API	_declspec(dllexport)
#endif


//-----------------------------------------------------------------------------
//		DelegateArgs
//-----------------------------------------------------------------------------
//
// Arguments of a Delegate
// You are supposed to derive this class to include 
// more informations regarding the delegate
class DELEGATEARG_API DelegateArgs : public XDWObject
{
	typedef XDWObject inherited;
	DECLARE_RTTI (DelegateArgs)

public:
	DelegateArgs ()  { }
	virtual ~DelegateArgs ()  { }
};


//-----------------------------------------------------------------------------
//		EventArgs_Null
//	定义这个空的参数类型, 是告诉使用者, 无论是调用方还是接受方, 都不关心参数类型, 即使是 nullptr 也不在乎
//	任何 DelegateArgs 的继承类, 都不能继承自这个类
//	所有监听者, 最好不要试图引用参数, 即最好写成如下格式
//	OnXXX (const void * sender, EventArgs_Null *)
//-----------------------------------------------------------------------------

class DELEGATEARG_API EventArgs_Null : public DelegateArgs
{
	typedef DelegateArgs inherited;
	DECLARE_RTTI (EventArgs_Null)
};