WTL-MDI-SPLITTER with edit controls fixed

// MainFrm.h : interface of the CMainFrame class
//
/////////////////////////////////////////////////////////////////////////////

#pragma once

#define CHAIN_COMMANDS_MEMBER_ID_RANGE(theChainMember, idFirst, idLast) \
    if(uMsg == WM_COMMAND && (LOWORD(wParam) >= idFirst && LOWORD(wParam) <=idLast) && (theChainMember.m_hWnd == GetFocus())) \
        CHAIN_MSG_MAP_MEMBER(theChainMember)

//#define CHAIN_MDICLIENT_COMMANDS() \
//  if((uMsg == WM_COMMAND) && (this->m_hWndMDIClient != NULL)) \
//      ::SendMessage(this->m_hWndMDIClient, uMsg, wParam, lParam);



class CMainFrame :
    public CMDIFrameWindowImpl<CMainFrame>,
    public CUpdateUI<CMainFrame>,
    public CMessageFilter, public CIdleHandler
{
    //typedef CMDISplitterFrameImpl<CMainFrame, false> _baseClass;
    CHorSplitterWindow m_hsplit;
    CBottom m_bottom;
public:
    DECLARE_FRAME_WND_CLASS(NULL, IDR_MAINFRAME)

    CMDICommandBarCtrl m_CmdBar;

    virtual BOOL PreTranslateMessage(MSG* pMsg);
    virtual BOOL OnIdle();

    BEGIN_UPDATE_UI_MAP(CMainFrame)
        UPDATE_ELEMENT(ID_VIEW_TOOLBAR, UPDUI_MENUPOPUP)
        UPDATE_ELEMENT(ID_VIEW_STATUS_BAR, UPDUI_MENUPOPUP)
    END_UPDATE_UI_MAP()

    BEGIN_MSG_MAP(CMainFrame)
        MESSAGE_HANDLER(WM_CREATE, OnCreate)
        MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
        COMMAND_ID_HANDLER(ID_APP_EXIT, OnFileExit)
        COMMAND_ID_HANDLER(ID_FILE_NEW, OnFileNew)
        COMMAND_ID_HANDLER(ID_VIEW_TOOLBAR, OnViewToolBar)
        COMMAND_ID_HANDLER(ID_VIEW_STATUS_BAR, OnViewStatusBar)
        COMMAND_ID_HANDLER(ID_APP_ABOUT, OnAppAbout)
        COMMAND_ID_HANDLER(ID_WINDOW_CASCADE, OnWindowCascade)
        COMMAND_ID_HANDLER(ID_WINDOW_TILE_HORZ, OnWindowTile)
        COMMAND_ID_HANDLER(ID_WINDOW_ARRANGE, OnWindowArrangeIcons)
        CHAIN_COMMANDS_MEMBER_ID_RANGE(m_bottom, ID_EDIT_CLEAR, ID_EDIT_FIND_PREVIOUS)
        CHAIN_MDI_CHILD_COMMANDS()
        CHAIN_MSG_MAP(CUpdateUI<CMainFrame>)
        CHAIN_MSG_MAP(CMDIFrameWindowImpl<CMainFrame>)
    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 OnDestroy(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& bHandled);
    LRESULT OnFileExit(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
    LRESULT OnFileNew(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
    LRESULT OnViewToolBar(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
    LRESULT OnViewStatusBar(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
    LRESULT OnAppAbout(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
    LRESULT OnWindowCascade(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
    LRESULT OnWindowTile(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
    LRESULT OnWindowArrangeIcons(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/);
};