MFC选择文件并保存到当前路径

char CurrentDirectory[MAX_PATH]; 
    CString fileName = "*.obj";         //默认打开的文件名 
CString FilePathName;
CString Directory;
CString SaveFileName;
int ret = GetCurrentDirectory(MAX_PATH,CurrentDirectory);
Directory.Format(_T("%s"),CurrentDirectory);
SaveFileName = Directory + _T("\\test.obj");
    CString filter = "文件 (*.obj)|*.obj||";   //文件过虑的类型  
    CFileDialog openFileDlg(TRUE, NULL, fileName, OFN_HIDEREADONLY|OFN_READONLY, filter, NULL);  
if(openFileDlg.DoModal()==IDOK)
    {
        FilePathName = openFileDlg.GetPathName(); //文件名保存在了FilePathName里
CopyFile(FilePathName, SaveFileName ,FALSE);
    }
else
    {
         return;
    }