从richrdit获取文本，设置文本

// set the text in IDC_EDITNAMECWnd* pWnd = GetDlgItem(IDC_EDITNAME);pWnd->SetWindowText(_T("Gerald Samper"));// Get the text back. CString is convenient, because MFC// will automatically allocate enough memory to hold the// text--no matter how large it is.CString str;pWnd->GetWindowText(str);ASSERT(str == _T("Gerald Samper"));// The LPTSTR override works, too, but it might be too short.// If we supply a buffer that's too small, we'll only get those// characters that fit.TCHAR sz[10];int nRet = pWnd->GetWindowText(sz, 10);// Nine characters, plus terminating nullASSERT(_tcscmp(sz, _T("Gerald Sa")) == 0);ASSERT(nRet == 9);// You can query the length of the text without the length of// the string using CWnd::GetWindowTextLength()nRet = pWnd->GetWindowTextLength();ASSERT(nRet == 13);