// MainFrm.cpp : implementation of the CMainFrame class

//

...

static UINT WM_FINDREPLACE = RegisterWindowMessage(FINDMSGSTRING);

///////////////////////////////////////////////////////////////////

// CMainFrame

IMPLEMENT_DYNCREATE(CMainFrame, CFrameWnd)

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)

    //{{AFX_MSG_MAP(CMainFrame)

    ...

    //}}AFX_MSG_MAP

    ON_REGISTERED_MESSAGE(WM_FINDREPLACE, OnFindReplace)

END_MESSAGE_MAP()

...

void CMainFrame::OnViewFindreplacedialog()

{

    // TODO: Add your command handler code here

    CFindReplaceDialog *pDlg = new CFindReplaceDialog;

    pDlg->Create(TRUE,  "Findme" , NULL, FR_DOWN, this);

}

LRESULT CMainFrame::OnFindReplace(WPARAM wParam, LPARAM lParam)

{

    if (((LPFINDREPLACE)lParam)->Flags & FR_FINDNEXT)

    {

        CString temp =  "Search string: " ;

        temp = temp + ((LPFINDREPLACE)lParam)->lpstrFindWhat;

        AfxMessageBox(temp);

    }

    return  0 ;

}

afx_msg LRESULT OnFindReplace(WPARAM wParam, LPARAM lParam);