write CString to binary file

[Radu]

Hi,

How to write some data contained in a CString to a binary file?
The CString data can only contain "hex values", i.e. str = "010145b4bd".
When I write using ofstream or CFile and open the file with a hex editor it shows my string hex values in the ascii part :

00000000 | 30 31 30 31 34 | 010145b4bd

any idea?
thanks in advance

[Radu]

ok, i found a solution.

1) convert the CString to unsigned char
2) write the unsigned char buffer to the file

	
CFile f( headerPath, CFile::modeCreate | CFile::modeWrite | CFile::typeBinary);
CString header = "all hex bytes here";
int sz = header.GetLength();
unsigned char Msg[5000] = "";
unsigned char* pMsg = Msg;
CStringToHex(header, pMsg); //(this is my own conversion function)	
f.Write(pMsg,sz);
f.Close();

[VictorN]

Sounds like you use "ofstream or CFile" not correct, but without seeing your code...

// non-unicode build
CFile file;
CString str("010145b4bd");
if(fle.Open(....))
{
        file.Write((LPCSTR)str, str.GetLength());
        file.Close();
}

[Skizmo]

step 1 can be fixed with MyString.GetBuffer (0). This gives you the internal pointer to the charbuffer of the CString.

[Radu]

Thanks!

victor, yeah, i didn't use LPCSTR.