求助有关文件读写的问题！！！

[atom527]

先将文件（4行）中的内容读取到相应的对话框中的4个控件中，用户修改完后再按“确定”写入文件。求较详细的源程序！

[7zkeeper]

伪代码流程
1 fopen 文件
2 GetDataFromFile
3 SetValueToEdit
4 ModifyEditContent
5 WriteDataToFile

[7zkeeper]

伪代码流程
1 fopen 文件
2 GetDataFromFile
3 SetValueToEdit
4 ModifyEditContent
5 WriteDataToFile

[sans]

CStdioFile fTxt;
fTxt.Open( "text.txt", CFile::modeReadWrite );
CString strTxt;
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT1, strTxt );
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT2, strTxt );
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT3, strTxt );
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT4, strTxt );

...

fTxt.SeekToBegin();
GetDlgItem( IDC_EDIT1 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
GetDlgItem( IDC_EDIT2 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
GetDlgItem( IDC_EDIT3 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
GetDlgItem( IDC_EDIT4 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
fTxt.Close();

[sans]

CStdioFile fTxt;
fTxt.Open( "text.txt", CFile::modeReadWrite );
CString strTxt;
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT1, strTxt );
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT2, strTxt );
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT3, strTxt );
fTxt.ReadString( strTxt );
SetDlgItemText( IDC_EDIT4, strTxt );

...

fTxt.SeekToBegin();
GetDlgItem( IDC_EDIT1 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
GetDlgItem( IDC_EDIT2 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
GetDlgItem( IDC_EDIT3 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
GetDlgItem( IDC_EDIT4 )->GetWindowText( strTxt );
fTxt.WriteString( strTxt );
fTxt.Close();

[wuqingguo]

CStdioFile file;
CString strComment;
if(!file.Open("C:\\data.txt",CFile::modeReadWrite))
return;
file.ReadString(strComment);
//调一次ReadString读一行。
...
...
strComment=GetDlgItemText(...);
file.WriteString(strComment);
//调一次WriteString写一行。

[howtotell]

CString str;
Char buf[1280];
GetDlgItem(IDC_EDIT1)->GetWindowText(str);
CFile fp;
fp.Open("test.txt",CFile::modeRead);
fp.Read(buf,str.GetLength());
fp.Close;

str.Empty();
GetDlgItem(IDC_EDIT1)->SetWindowText(str);
fp.Open("test.txt",CFile::modeRead);
fp.Write(str,str.GetLength());
fp.Close;