CDataFile Class

Environment: VC++ 6.0. SP5, Win2k SP2

Functions and Usage

The main functions of CDataFile are shown in the following:

1. Create a file with two modes:

Function : BOOL CDataFile::CreateFile(LPCTSTR lpszFileName, UINT nFlags)

Usage: nFlags may be CREATE_MODE_REBUILD (Whether the file exists or not, recreate it) or CREATE_MODE_NOREBUILD (If the file has existed ,do not recreate it)

2. Open a file with three modes:

Function : BOOL CDataFile::OpenFile(LPCTSTR lpszFileName, UINT nFlags)

Usage: nFlags may be OPEN_MODE_READ ,OPEN_MODE_WRITE ,OPEN_MODE_READWRITE

3. Check a file whether it has exisited:

Function : INT CDataFile::CheckFileExsist(LPCTSTR lpszFileName)

Usage : Return values may be FLAG_FILE_EXIST , FLAG_FILE_NOEXIST

4. Get the number of lines in the file:

Function : UINT CDataFile::GetLines()

Usage : Return value is the number of lines.

5. Move the pointer to the line you want to operate:

Function : BOOL CDataFile::MoveToLine(UINT line)

Usage : If you want to use ReadLine() or WriteLine(),you must use MoveToLine() first.

6. Read the line you move to:

Function: BOOL CDataFile::ReadLine(CString &rString)

7. Insert, overwrite, delete a line at current line:

Function : void CDataFile::WriteLine(CString &wString, UINT nFlag)

Usage : nFlag may be WRITE_MODE_INSERT ,WRITE_MODE_OVERWRITE or WRITE_MODE_DELETE.If nFlag is WRITE_MODE_DELETE , the wString is the content of the line you will delete.

8. Close a file:

Function : void CDataFile::CloseFile()

Downloads

Download demo project - 24 Kb
Download source - 3 Kb


Comments

  • nice & lite code~

    Posted by Legacy on 08/12/2002 12:00am

    Originally posted by: neoleftz

    nice & lite code~

    Reply
  • Works fine

    Posted by Legacy on 07/31/2002 12:00am

    Originally posted by: Matthias

    ..It does what It should do (As far as I used it). Thanks for this Class

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Best-in-Class organizations execute on a strategy that supports the multi-channel nature of customer requests. These leading organizations do not just open up their service infrastructures to accommodate new channels, but also empower their teams to deliver an effective and consistent experience regardless of the channel selected by the customer. This document will highlight the key business capabilities that support a Best-in-Class customer engagement strategy.

  • Live Event Date: September 10, 2014 @ 11:00 a.m. ET / 8:00 a.m. PT Modern mobile applications connect systems-of-engagement (mobile apps) with systems-of-record (traditional IT) to deliver new and innovative business value. But the lifecycle for development of mobile apps is also new and different. Emerging trends in mobile development call for faster delivery of incremental features, coupled with feedback from the users of the app "in the wild". This loop of continuous delivery and continuous feedback is …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds