MFC----打开或创建文件

 CFile file;
 if(file.Open(L"test1.TXT",CFile::modeReadWrite))
 {
       MessageBox(L"Open File OK");
 }
 else
 {
       file.Open(L"test1.TXT",CFile::modeCreate |CFile::modeReadWrite);
       MessageBox(L"File not exist to create");

 }