Hello all,

I'm a newbie to this forum and appreciate if anyone of you has seen this problem before regarding the WriteString( ) in hte MFC class and provide some badly needed help. In my app I'm using the CStdioFile::WriteString( ) function. The string being passed into this function for printing into the log file, does have the entire SQL statement. But when the WriteString( ) function writes it into the log, the SQL statement is truncated at the first non-English character.

Bunch of developer whom i have spoken to think this should be a problem with either the WriteString( ) function, or with the way it is being used. We are trying to investigate if the usage of the CStdioFile class in the configurator code is correct or not. I have searched the internet and found a couple of instances where people have complained about the WriteString function not writing non-English characters, but the solution to this problem was not written anywhere.

The recommended file class to be used for unicode is CStdioFile. But in our case this didn't work because of problem with WriteString( ). So my question is: is there any other MFC class which can be used for this case

Any input will be greatly appreciated.

example output and call to API

unicode

Kuphryn

Kuphryn,Martin & Ben,

Thank you all for your prompt response. Yes it's Unicode. Here a code snippet

#include <afx.h>

class Log_Test
{
public:
CStdioFile Log_File;

Log_Test()
{

}
void test();
};

void Log_Test :: test()
{
CString update_string;
update_string = _T("update temp set column1 = \'\"Grupes\" ISDN iejungimo mokeseio nuolaidos\' where column2 = 1");
if(Log_File.Open(_T("c:\\test.txt"),
CFile::modeCreate | CFile::modeWrite ))
{
Log_File.WriteString(_T("===================================\n"));
Log_File.WriteString(_T("Status: Success \n"));
Log_File.WriteString( _T("Date: "));
CTime system_time = CTime::GetCurrentTime();
CString current_time = system_time.Format(_T("%d %B %Y %H:%M:%S"));
Log_File.WriteString(current_time);
Log_File.WriteString(_T("\nUser: "));
Log_File.WriteString(_T("\nSQL Statement:\n"));
Log_File.WriteString(_T(update_string));
Log_File.WriteString(_T("\n\n"));
Log_File.Close();
}

Here the string contains the right value, but while writing to the file using WriteString() fct, the statement is truncated in the file.

Thanks again guys. I really appreciate your help.

If no other solutions, you can try this. If you need your log file in Unicode format, then you can open the file in binary mode:

Log_File.Open(..., CFile::modeCreate | CFile::modeWrite | CFile::typeBinary);

In this file strings are not truncated, but you have to put "\r\n" at the end of each strings.

If you need the file in Ansi format, then open the file in text mode:

Log_File.Open(..., CFile::modeCreate | CFile::modeWrite | CFile::typeText);

Then instead of WriteString, convert your Unicode string to Ansi format and write using Write. For simple conversion, you can try _bstr_t:

_bstr_t s = update_string;

const char * ptr = s;

Log_File.Write(ptr, lstrlenA(ptr));

This works well in our tests.

Use this way unless a better method is found.