Comments by Mr Sam (Top 28 by date)

How to rewind a file when writing text into file and when maximum file size reached.

Hi! Doesn't matter whether it is char by char or chunk of data. But whatever writing the text into capture file, it should be rewind once reached max file size. file size is configured from 1K to 10MB.

Hi! my question is my capture text file size is limited some size which is configurable from 1k to 10MB. If suppose my capture text file size is mentioned 1024 bytes, and if i'm continuously writing text, size of text file should not increase 1024 bytes and whatever the text writing into capture file after reaching 1024 bytes. It should rewind the previous text. in capture text file on top left corner should show [Rewinded...].

hi!
writing char by char into com port. need to send char by char.

To avoid the above expensive process i'm reading the file initially file open logic was written before calling of writedata().
But if file open always how to know where to position the file pointer in file.

Yes, what could be the reason for this. In Win7,"The file is in use.
Enter a new name or close the file that's open in another program." is showing. why not showing my application msg.

Opening the file as:
CFile m_file;
if(!m_file.Open((m_FilePath, CFile::modeCreate | CFile::modeNoTruncate | CFile::modeWrite,&ex))

Ok sure.

Yes - But my file size is not more than 2 KB.

You mean the question which i posted is already in codeproject forum ?

Thank You!

Thank you!

Oh! Sorry, i forgot. Thank you!

Thank You so much! my problem got solved :-)

Thank you! SA.

I did not get success by using above functions. Any other solutions please. And how to resolved this : cannot convert parameter 1 from 'CString' to 'const char *'?

Albert, thanks to you!!

Thanks you!!!

yes, instead of writing char by char into file. Writing chunk by chunk, so that it will get finish very fastly.

1KB

Giving error like: error C2501: 'CStringW' : missing storage-class or type specifiers

I have converted the code like this
CString UTF8toUTF16(const CString& utf8)
{
CString utf16;
int len = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0);
if (len>1)
{
wchar_t *ptr = utf16.GetBuffer(len-1);
if (ptr) MultiByteToWideChar(CP_UTF8, 0, utf8, -1, ptr, len);
utf16.ReleaseBuffer();
}
return utf16;
}
and getting errors...
error C2664: 'MultiByteToWideChar' : cannot convert parameter 3 from 'const class CString' to 'const char *'

This function is not working, getting errors on vc6.0. There is not CStringW, CStringA is not there CString only. Please check...

CStringW CFunctions::UTF8toUTF16(const CStringA& utf8)
{
CStringW utf16;
int len = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0);
if (len>1)
{
wchar_t *ptr = utf16.GetBuffer(len-1);
if (ptr) MultiByteToWideChar(CP_UTF8, 0, utf8, -1, ptr, len);
utf16.ReleaseBuffer();
}
return utf16;
}