MFC的TXT

void CFile_wrDlg::OnBtnNew(){     UpdateData();     m_name += ".txt";     CFile file(m_name,CFile::modeCreate | CFile::modeNoTruncate);     file.Close();     UpdateData(0);     MessageBox("创建成功!请查看当前目录");}void CFile_wrDlg::OnBtnWrite(){     UpdateData();     CFile file(m_name,CFile::modeWrite);     file.SeekToEnd();     file.Write(m_edit1,strlen(m_edit1));     file.Close();     MessageBox("写入成功!");}void CFile_wrDlg::OnBtnRead(){         CFile file(m_name, CFile::modeRead)     ;     DWORD dwFileLen = file.GetLength();     char* p = new char[dwFileLen+1];     p[dwFileLen] = 0;     file.Read(p,dwFileLen);     file.Close();     MessageBox(p);}