MySubClassing.h

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/* SubClassing ***************************************************************
        Cette class permet de sous-classer plusieur fois une fenetre

        Ex.:
        typedef struct { int x,y; char name[1024]; }  TInfo1;
        typedef struct { COLORREF rgb; BOOL isTransparent; } TInfo2;

        LRESULT MyNewCallBack2 (HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam,ULONG ptrContext)
        {
                TInfo2 *info = (TInfo2 *)ptrContext;
                switch (message)
                        //...
        }

        LRESULT MyNewCallBack1 (HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam,ULONG ptrContext)
        {
                TInfo1 *info = (TInfo1 *)ptrContext;
                switch (message)
                        //...
        }
        
        void main()
        {   //...
                TInfo1 info1;
                TInfo2 info2;
                CMySubClassing sub;
                sub= hWnd;
                sub.Set(newCallBack1,&info1);
                sub.Set(newCallBack2,&info2);
                //...
        }
************************************************************************ */

#if !defined(AFX_MYSUBCLASSING_H__B19BE954_67F7_440E_8025_C08A1AFE37B7__INCLUDED_)
#define AFX_MYSUBCLASSING_H__B19BE954_67F7_440E_8025_C08A1AFE37B7__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "MyList.h"

typedef LRESULT (*PTR_FONCTION_CALLBACK) (HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam,ULONG ptrContext,BOOL *isEnd);

class CElemCallback
{
        public:
                PTR_FONCTION_CALLBACK m_callBack;
                ULONG m_ptrContext;

                CElemCallback()
                {
                        m_callBack = 0;
                        m_ptrContext = 0;
                }

                void operator=(CElemCallback &elem)
                {
                        m_callBack = elem.m_callBack;
                        m_ptrContext = elem.m_ptrContext;
                }
};

class CElemSubClassing
{
        public:
                HWND m_hWndControl;
                ULONG m_oldCallBack;
                MyList<CElemCallback> m_lElemCallBack;

                CElemSubClassing() 
                {
                        m_hWndControl = 0;
                        m_oldCallBack = 0;
                        m_lElemCallBack.SuprAll();
                }

                void operator=(CElemSubClassing &elem)
                {
                        m_hWndControl = elem.m_hWndControl;
                        m_oldCallBack = elem.m_oldCallBack;
                        m_lElemCallBack = elem.m_lElemCallBack;
                }
};

/* Structure de doonnée: *****************************************************
        m_lElemSubClassing[](CElemSubClassing)
          m_hWndControl         (HWND)
          m_oldCallBack         (ULONG)
          m_lElemCallBack[]     (CElemCallback)
                m_callBack              (PTR_FONCTION_CALLBACK)
                m_ptrContext    (ULONG)
*************************************************************************** */

class CMySubClassing  
{
        private:
                BOOL m_isSubclassing;
                
        public:
                CElemSubClassing *m_elemSubClassingCurrent;

                CMySubClassing();
                virtual ~CMySubClassing();

                void operator=(HWND hWnd);

                void Set(PTR_FONCTION_CALLBACK newCallBack,ULONG ptrContext);
                void Delete ();
};

#endif // !defined(AFX_MYSUBCLASSING_H__B19BE954_67F7_440E_8025_C08A1AFE37B7__INCLUDED_)

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