MFC 使用注册窗口信息的方式获取CFindReplaceDialog控件消息

首先在主对话框注册消息

添加消息

class CMainFrame : public CFrameWnd
{

  static const UINT WM_FINDREPLACE;//定义消息
  CFindReplaceDlg* m_pFindDlg{};
protected:
  afx_msg LRESULT OnFindreplace(WPARAM wParam, LPARAM lParam);
}
  
  
//消息映射表  
BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
  ON_REGISTERED_MESSAGE(WM_FINDREPLACE, OnFindreplace)
END_MESSAGE_MAP()


const UINT CMainFrame::WM_FINDREPLACE = ::RegisterWindowMessage(FINDMSGSTRING);//注册


LRESULT CMainFrame::OnFindreplace(WPARAM wParam, LPARAM lParam)
{
  if (!m_pFindDlg->GetSafeHwnd())
    return -1;
  if (m_pFindDlg->IsTerminating())
  {//点击了cancel按钮，destroywindows由FRDlg内部执行
    this->OnDestroy();
    return 0;
  }

  if (m_pFindDlg->ReplaceAll())
    //TODO...
  if (m_pFindDlg->ReplaceCurrent())
    //TODO...
  if (m_pFindDlg->FindNext())
    //TODO...
  return 0;
}