CFile 实例

//写入文件
void CFDlg::OnButton1() 
{

 CFile file;
 file.Open("f:\test1.txt",CFile::modeCreate|CFile::modeReadWrite);
 file.Write("vcshare.net",strlen("vcshare.net"));

 file.Close();

}
//读取文件

void CFDlg::OnButton2() 
{

 CFile file;
 file.Open("f:\test1.txt",CFile::modeRead);
 char strbuf[20];
 file.Read(strbuf,20);
 AfxMessageBox(strbuf);

}
//文件多次写入不丢失

void CFDlg::OnButton3() 
{
 AfxMessageBox("重复的数据部丢失");

 CFile file;
 file.Open("f:\test2.txt",CFile::modeNoTruncate|CFile::modeReadWrite|CFile::modeCreate);
 file.SeekToEnd( );
 file.Write("11111",10);
 file.Write("22222",10);
 file.Write("33333",10);

}
//读取上例中的数据

void CFDlg::OnButton4() 
{
 CFile file;
 file.Open("f:\test2.txt",CFile::modeRead);
 char buff [1000 <a href="http://www.precisionrafting.com/">Kamagra</a>];
 file.Read(buff,1000);
 AfxMessageBox(buff);
}
//拷贝文件到文件夹

void CFDlg::OnButton5() 
{
 // TODO: Add your control notification handler code here
 CopyFile("f:\test2.txt","d:\test2.txt",false);
 MessageBox("file test2.txt from f to d !!");

}
//删除文件

void CFDlg::OnButton6() 
{
 DeleteFile ("f:\test2.txt");
 MessageBox("test2 's deleted!");

}
//建立文件夹

void CFDlg::OnButton7() 
{
MessageBox("CreateDirectory在f盘根目录建立test文件夹");

if(CreateDirectoryA("f:\test",NULL) == 0)

AfxMessageBox("false");

}