mdi cut,copy and paste

#pragma once

class CChildFrame : public CMDIChildWindowImpl<CChildFrame>
{
public:
    DECLARE_FRAME_WND_CLASS(NULL, IDR_MDICHILD)

    CView m_view;
    CFont m_font;

    virtual void OnFinalMessage(HWND /*hWnd*/);

    BEGIN_MSG_MAP(CChildFrame)
        MESSAGE_HANDLER(WM_CREATE, OnCreate)
        MESSAGE_HANDLER(WM_FORWARDMSG, OnForwardMsg)
        CHAIN_CLIENT_COMMANDS()
        CHAIN_MSG_MAP(CMDIChildWindowImpl<CChildFrame>)
    END_MSG_MAP()

// Handler prototypes (uncomment arguments if needed):
//  LRESULT MessageHandler(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
//  LRESULT CommandHandler(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
//  LRESULT NotifyHandler(int /*idCtrl*/, LPNMHDR /*pnmh*/, BOOL& /*bHandled*/)

    LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled);
    LRESULT OnForwardMsg(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM lParam, BOOL& /*bHandled*/);
};