Add callback template class
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kaetemi
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4 changed files with 399 additions and 0 deletions
327
code/nel/include/nel/misc/callback.h
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327
code/nel/include/nel/misc/callback.h
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/*
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Copyright (c) 2009-2014, Jan BOON
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef NLMISC_CALLBACK_H
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#define NLMISC_CALLBACK_H
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#include <nel/misc/types_nl.h>
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// STL includes
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// NeL includes
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#include <nel/misc/debug.h>
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// Project includes
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namespace NLMISC {
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#define NLMISC_CALLBACK_TEMPLATE \
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/** \
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* \brief NLMISC_CALLBACK_ARGS_CLASS \
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* \date 2009-03-03 18:09GMT \
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* \author Jan BOON \
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* Callback template \
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*/ \
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template<typename TReturn NLMISC_CALLBACK_ARGS_TYPENAME> \
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class NLMISC_CALLBACK_ARGS_CLASS \
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{ \
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/* Very simple reference counting callback base */ \
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class CCallbackBase \
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{ \
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public: \
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CCallbackBase() : m_RefCount(0) \
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{ \
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\
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} \
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\
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virtual ~CCallbackBase() \
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{ \
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nlassert(!m_RefCount); \
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} \
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\
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void refAdd() \
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{ \
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++m_RefCount; \
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} \
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\
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void refRemove() \
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{ \
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--m_RefCount; \
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if (!m_RefCount) \
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delete this; \
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} \
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\
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virtual TReturn callback(NLMISC_CALLBACK_ARGS_DECL) = 0; \
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\
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virtual bool equals(const CCallbackBase *callbackBase) = 0; \
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\
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/* disable copy */ \
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CCallbackBase(const CCallbackBase &); \
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CCallbackBase &operator=(const CCallbackBase &); \
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\
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private: \
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uint m_RefCount; \
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}; \
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\
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typedef TReturn TCallbackFunction(NLMISC_CALLBACK_ARGS_DECL); \
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class CCallbackFunction : public CCallbackBase \
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{ \
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public: \
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CCallbackFunction(TCallbackFunction *callbackFunction) : m_CallbackFunction(callbackFunction) \
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{ \
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nlassert(m_CallbackFunction); \
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} \
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\
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virtual ~CCallbackFunction() \
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{ \
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m_CallbackFunction = NULL; \
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} \
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\
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virtual TReturn callback(NLMISC_CALLBACK_ARGS_DECL) \
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{ \
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return m_CallbackFunction(NLMISC_CALLBACK_ARGS_IMPL); \
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} \
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\
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virtual bool equals(const CCallbackBase *callbackBase) \
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{ \
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const CCallbackFunction *callbackFunction = \
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dynamic_cast<const CCallbackFunction *>(callbackBase); \
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if (!callbackFunction) return false; \
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return m_CallbackFunction == callbackFunction->m_CallbackFunction; \
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} \
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\
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private: \
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TCallbackFunction *m_CallbackFunction; \
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}; \
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\
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template<typename TClass> \
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class CCallbackMethod : public CCallbackBase \
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{ \
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typedef TReturn (TClass::*TCallbackMethod)(NLMISC_CALLBACK_ARGS_DECL); \
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public: \
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CCallbackMethod(TClass *callbackObject, TCallbackMethod callbackMethod) : m_CallbackObject(callbackObject), m_CallbackMethod(callbackMethod) \
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{ \
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nlassert(m_CallbackObject); \
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nlassert(m_CallbackMethod); \
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} \
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\
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virtual ~CCallbackMethod() \
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{ \
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m_CallbackObject = NULL; \
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m_CallbackMethod = NULL; \
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} \
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\
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virtual TReturn callback(NLMISC_CALLBACK_ARGS_DECL) \
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{ \
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return (m_CallbackObject->*m_CallbackMethod)(NLMISC_CALLBACK_ARGS_IMPL); \
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} \
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\
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virtual bool equals(const CCallbackBase *callbackBase) \
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{ \
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const CCallbackMethod *callbackMethod = \
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dynamic_cast<const CCallbackMethod *>(callbackBase); \
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if (!callbackMethod) return false; \
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return m_CallbackObject == callbackMethod->m_CallbackObject \
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&& m_CallbackMethod == callbackMethod->m_CallbackMethod; \
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} \
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\
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private: \
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TClass *m_CallbackObject; \
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TCallbackMethod m_CallbackMethod; \
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}; \
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\
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public: \
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CCallback() : m_CallbackBase(NULL) \
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{ \
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\
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} \
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\
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CCallback(TCallbackFunction *callbackFunction) : m_CallbackBase(new CCallbackFunction(callbackFunction)) \
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{ \
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nlassert(m_CallbackBase); \
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m_CallbackBase->refAdd(); \
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} \
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\
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template<typename TClass> \
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CCallback(TClass *callbackObject, TReturn (TClass::*callbackMethod)(NLMISC_CALLBACK_ARGS_DECL)) : m_CallbackBase(new CCallbackMethod<TClass>(callbackObject, callbackMethod)) \
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{ \
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nlassert(m_CallbackBase); \
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m_CallbackBase->refAdd(); \
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} \
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\
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CCallback(const CCallback &callback) \
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{ \
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m_CallbackBase = callback.m_CallbackBase; \
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if (m_CallbackBase) \
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m_CallbackBase->refAdd(); \
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} \
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\
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CCallback &operator=(const CCallback &callback) \
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{ \
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if (m_CallbackBase != callback.m_CallbackBase) \
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{ \
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if (m_CallbackBase) \
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m_CallbackBase->refRemove(); \
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m_CallbackBase = callback.m_CallbackBase; \
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if (m_CallbackBase) \
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m_CallbackBase->refAdd(); \
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} \
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return *this; \
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} \
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\
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~CCallback() \
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{ \
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if (m_CallbackBase) \
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{ \
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m_CallbackBase->refRemove(); \
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m_CallbackBase = NULL; \
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} \
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} \
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\
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TReturn callback(NLMISC_CALLBACK_ARGS_DECL) \
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{ \
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nlassert(m_CallbackBase); \
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return m_CallbackBase->callback(NLMISC_CALLBACK_ARGS_IMPL); \
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} \
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\
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TReturn operator()(NLMISC_CALLBACK_ARGS_DECL) \
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{ \
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nlassert(m_CallbackBase); \
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return m_CallbackBase->callback(NLMISC_CALLBACK_ARGS_IMPL); \
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} \
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\
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bool valid() const \
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{ \
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return m_CallbackBase != NULL; \
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} \
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\
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operator bool() const \
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{ \
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return m_CallbackBase != NULL; \
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} \
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\
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bool operator==(const CCallback &callback) \
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{ \
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return m_CallbackBase->equals(callback.m_CallbackBase); \
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} \
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\
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private: \
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CCallbackBase *m_CallbackBase; \
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\
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}; /* class CCallback */ \
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template<typename TReturn, typename TArgsA = void, typename TArgsB = void, typename TArgsC = void, typename TArgsD = void, typename TArgsE = void, typename TArgsF = void, typename TArgsG = void, typename TDummy = void>
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class CCallback;
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, void, void, void, void, void, void, void, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME
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#define NLMISC_CALLBACK_ARGS_DECL
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#define NLMISC_CALLBACK_ARGS_IMPL
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, TArgsA, void, void, void, void, void, void, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA
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#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA
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#define NLMISC_CALLBACK_ARGS_IMPL argsA
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, TArgsA, TArgsB, void, void, void, void, void, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB
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#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB
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#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, TArgsA, TArgsB, TArgsC, void, void, void, void, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC
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#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC
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#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, TArgsA, TArgsB, TArgsC, TArgsD, void, void, void, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD
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#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD
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#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, TArgsA, TArgsB, TArgsC, TArgsD, TArgsE, void, void, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD, typename TArgsE
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#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD, TArgsE argsE
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#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD, argsE
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, TArgsA, TArgsB, TArgsC, TArgsD, TArgsE, TArgsF, void, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD, typename TArgsE, typename TArgsF
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#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD, TArgsE argsE, TArgsF argsF
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#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD, argsE, argsF
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#define NLMISC_CALLBACK_ARGS_CLASS CCallback<TReturn, TArgsA, TArgsB, TArgsC, TArgsD, TArgsE, TArgsF, TArgsG, void>
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#define NLMISC_CALLBACK_ARGS_TYPENAME , typename TArgsA, typename TArgsB, typename TArgsC, typename TArgsD, typename TArgsE, typename TArgsF, typename TArgsG
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#define NLMISC_CALLBACK_ARGS_DECL TArgsA argsA, TArgsB argsB, TArgsC argsC, TArgsD argsD, TArgsE argsE, TArgsF argsF, TArgsG argsG
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#define NLMISC_CALLBACK_ARGS_IMPL argsA, argsB, argsC, argsD, argsE, argsF, argsG
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NLMISC_CALLBACK_TEMPLATE
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#undef NLMISC_CALLBACK_ARGS_CLASS
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#undef NLMISC_CALLBACK_ARGS_TYPENAME
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#undef NLMISC_CALLBACK_ARGS_DECL
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#undef NLMISC_CALLBACK_ARGS_IMPL
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#undef NLMISC_CALLBACK_ARGS_CLASSNAME
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#undef NLMISC_CALLBACK_TEMPLATE
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} /* namespace NLMISC */
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#endif /* #ifndef NLMISC_CALLBACK_H */
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/* end of file */
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ADD_SUBDIRECTORY(callback)
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ADD_SUBDIRECTORY(command)
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ADD_SUBDIRECTORY(command)
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ADD_SUBDIRECTORY(configfile)
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ADD_SUBDIRECTORY(configfile)
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ADD_SUBDIRECTORY(debug)
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ADD_SUBDIRECTORY(debug)
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9
code/nel/samples/misc/callback/CMakeLists.txt
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9
code/nel/samples/misc/callback/CMakeLists.txt
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@ -0,0 +1,9 @@
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FILE(GLOB SRC *.cpp)
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ADD_EXECUTABLE(nl_sample_callback ${SRC})
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TARGET_LINK_LIBRARIES(nl_sample_callback nelmisc)
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NL_DEFAULT_PROPS(nl_sample_callback "NeL, Samples, Misc: Callback")
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NL_ADD_RUNTIME_FLAGS(nl_sample_callback)
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INSTALL(TARGETS nl_sample_callback RUNTIME DESTINATION ${NL_BIN_PREFIX} COMPONENT samplesmisc)
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62
code/nel/samples/misc/callback/main.cpp
Normal file
62
code/nel/samples/misc/callback/main.cpp
Normal file
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@ -0,0 +1,62 @@
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/*
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Copyright (c) 2014, Jan BOON
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
|
||||||
|
modification, are permitted provided that the following conditions are met:
|
||||||
|
|
||||||
|
* Redistributions of source code must retain the above copyright notice, this
|
||||||
|
list of conditions and the following disclaimer.
|
||||||
|
|
||||||
|
* Redistributions in binary form must reproduce the above copyright notice,
|
||||||
|
this list of conditions and the following disclaimer in the documentation
|
||||||
|
and/or other materials provided with the distribution.
|
||||||
|
|
||||||
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||||
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||||
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||||
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||||
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||||
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||||
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||||
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||||
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <nel/misc/callback.h>
|
||||||
|
#include <nel/misc/debug.h>
|
||||||
|
|
||||||
|
class CTestClass
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
void helloWorld(int y)
|
||||||
|
{
|
||||||
|
nldebug("Method call: %i, %i", y, x);
|
||||||
|
}
|
||||||
|
int x;
|
||||||
|
};
|
||||||
|
|
||||||
|
void functionCall(int i)
|
||||||
|
{
|
||||||
|
nldebug("Function call: %i", i);
|
||||||
|
}
|
||||||
|
|
||||||
|
typedef NLMISC::CCallback<void, int> TCallbackType;
|
||||||
|
|
||||||
|
int main(int argc, char **argv)
|
||||||
|
{
|
||||||
|
CTestClass tc;
|
||||||
|
tc.x = 42;
|
||||||
|
|
||||||
|
TCallbackType cbMethod = TCallbackType(&tc, &CTestClass::helloWorld);
|
||||||
|
TCallbackType cbFunction = TCallbackType(functionCall);
|
||||||
|
cbMethod(100);
|
||||||
|
cbFunction(99);
|
||||||
|
|
||||||
|
getchar();
|
||||||
|
|
||||||
|
return EXIT_SUCCESS;
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue