try
{
CString strText;
strText.Format("%d,%s%s", iFacIndex, strTime, strValue);
if (GetFileAttributes("data.txt") == INVALID_FILE_ATTRIBUTES)
{
HANDLE hOpenFile = CreateFileA(_T("data.txt"),GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL,CREATE_ALWAYS/*|OPEN_EXISTING*/,FILE_ATTRIBUTE_NORMAL,NULL);
if (hOpenFile != INVALID_HANDLE_VALUE)
{
DWORD dwBytesWritten;
WriteFile(hOpenFile, strText.GetBuffer(), strText.GetLength(),
&dwBytesWritten, NULL);
CloseHandle((void *)hOpenFile);
}
}
else
{
CFile file;
if (file.Open("data.txt",CFile::modeCreate|CFile::shareDenyNone|CFile::modeWrite
/*|CFile::typeText*/))
{
file.Write(strText.GetBuffer(), strText.GetLength());
file.Close();
}
}
}
catch (CMemoryException* e)
{
TCHAR szBuff[MAX_PATH+1]={0};
e->GetErrorMessage(szBuff, MAX_PATH);
AfxMessageBox(szBuff);
}
catch (CFileException* e)
{
TCHAR szBuff[MAX_PATH+1]={0};
e->GetErrorMessage(szBuff, MAX_PATH);
AfxMessageBox(szBuff);
}
catch (CException* e)
{
TCHAR szBuff[MAX_PATH+1]={0};
e->GetErrorMessage(szBuff, MAX_PATH);
AfxMessageBox(szBuff);
}
說明:
1.如果檔案不存在,CreateFile指定OPEN_EXISTING标志将導緻調用失敗;