VC编辑框追加字符串并自动滚屏功能

CEdit *pEt = (CEdit *)GetDlgItem(IDC_EDIT_RECV);  //方式1int nLen = GetWindowTextLength(pEt->m_hWnd); pEt->SetSel(nLen, nLen); pEt->ReplaceSel("要添加的文字");

//方式2::SendMessage(GetDlgItem(hwnd,IDC_EDIT_RECV),EM_SETSEL,-1,0); ::SendMessage(GetDlgItem(hwnd,IDC_EDIT_RECV),EM_REPLACESEL,false,(long)buffer);

//方式3CString str="append/r/n";int  nLength=pEt->SendMessage(WM_GETTEXTLENGTH);   pEt->SetSel(nLength,nLength);   pEt->ReplaceSel(str); 

//自动滚屏pEt->LineScroll(pEt->GetLineCount());