OTS/OTSCPP/OTSControl/OTSDllBase.h

#pragma once

#include <windows.h>

namespace OTSController {


	//extern COTSUtilityExport* g_LpUtilityTools;
	//extern CString csLogData;

#ifdef AMICS_WINAPI
#undef AMICS_WINAPI
#endif
#define AMICS_WINAPI WINAPI

#define DECLARE_FUNCTION_BEGIN(FuncName) \
if (m_dllHandle)\
{\
	if (!m_fn##FuncName)\
	{\
		m_fn##FuncName = (FUNC_##FuncName)GetProcAddress(m_dllHandle, #FuncName);\
	}\
	if (m_fn##FuncName)\
	{\

#define DECLARE_FUNCTION_END(FuncName) \
}\
	if (SUCCEEDED(m_nLastReturn))\
	{\
		return true;\
	}\
}\
return false;


#define DECLARE_FUNCTION0(FuncName) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName() \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION1(FuncName, Param1) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1) \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION2(FuncName, Param1, Param2) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1, Param2); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1, Param2 p2) \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1, p2); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION3(FuncName, Param1, Param2, Param3) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1, Param2, Param3); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1, Param2 p2, Param3 p3) \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1, p2, p3); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION4(FuncName, Param1, Param2, Param3, Param4) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1, Param2, Param3, Param4); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1, Param2 p2, Param3 p3, Param4 p4) \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1, p2, p3, p4); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION5(FuncName, Param1, Param2, Param3, Param4, Param5) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1, Param2, Param3, Param4, Param5); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1, p2, p3, p4, p5); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION6(FuncName, Param1, Param2, Param3, Param4, Param5, Param6) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1, Param2, Param3, Param4, Param5, Param6); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1, p2, p3, p4, p5, p6); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION7(FuncName, Param1, Param2, Param3, Param4, Param5, Param6, Param7) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1, Param2, Param3, Param4, Param5, Param6, Param7); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) \
    { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1, p2, p3, p4, p5, p6, p7); \
        DECLARE_FUNCTION_END(FuncName) \
    }

#define DECLARE_FUNCTION8(FuncName, Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8) \
protected: \
    typedef int (AMICS_WINAPI* FUNC_##FuncName)(Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8); \
    FUNC_##FuncName m_fn##FuncName; \
public: \
    bool FuncName(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) \
        { \
        DECLARE_FUNCTION_BEGIN(FuncName) \
        m_nLastReturn = m_fn##FuncName(p1, p2, p3, p4, p5, p6, p7, p8); \
        DECLARE_FUNCTION_END(FuncName) \
        }

//declare constructors and LoadFunctions
#define DECLARE_CLASS_BEGIN(ClassName) \
public:	\
    ClassName () \
    { 

#define INIT_FUNCTION(FuncName) m_fn##FuncName = nullptr;

#define DECLARE_CLASS_END }

	class DllBase
	{
	protected:
		HINSTANCE m_dllHandle;
		CString m_dllName;
		long m_nLastReturn;

		BOOL m_bLogError;

	public:

		DllBase()
			: m_dllHandle(nullptr)
			, m_dllName(_T(""))
			, m_nLastReturn(0)
			, m_bLogError(TRUE)
		{
		}

		virtual ~DllBase()
		{
			FreeDll();
		}

		LPCTSTR GetDllName()
		{
			return m_dllName;
		}

		HINSTANCE GetHandle() { return m_dllHandle; }

		long GetLastReturn()
		{
			return m_nLastReturn;
		}

		void SetLogError(const BOOL a_bShow = TRUE)
		{
			m_bLogError = a_bShow;
		}

		//A NULL here means the name has already been set
		bool LoadDll(LPCTSTR name)
		{
			//try to load
#ifdef _AFXDLL
			m_dllHandle = AfxLoadLibrary(name);
#else
			m_dllHandle = LoadLibrary(name);
#endif
			LogTrace(__FILE__, __LINE__, "                AfxLoadLibrary DllName = [%s] End        ", name);
			if (!m_dllHandle)
			{
				//show warning here if needed

				m_dllName = _T("");
				DWORD errCode = GetLastError();
				LogErrorTrace(__FILE__, __LINE__, "LoadLibrary [%s] failed, return ErrorCode %d.", (LPCTSTR)name, errCode);
				return false;
			}
			else
			{
				m_dllName = name;
				LogTrace(__FILE__, __LINE__, " LoadLibrary [%s] Success", (LPCTSTR)m_dllName);
			}

			return true;
		}

		bool FreeDll()
		{
			bool bRet = true;

			if (m_dllHandle)
			{
#ifdef _AFXDLL
				bRet = AfxFreeLibrary(m_dllHandle) ? true : false;
#else
				bRet = FreeLibrary(m_dllHandle) ? true : false;
#endif

				m_dllHandle = nullptr;
				//	LogTrace(_T("FreeLibrary %s."), (LPCTSTR)m_dllName);
				LogTrace(__FILE__, __LINE__, "FreeLibrary %s.", (LPCTSTR)m_dllName);
				m_dllName = _T("");
			}
			else
			{
				//	LogTrace(_T("No valid dll to free."));
				LogTrace(__FILE__, __LINE__, "No valid dll to free.");
			}
			return bRet;
		}
	};

}