What is the encoding format of XFA in PDF file?

[yiyun0918@adobeforums.com]

Hello,
I got the XFA stream in PDF file and wrote it into a file. When I processed the XFA file with MSXML SDK, I got an error.In the XFA file,it is said the default encoding is UTF-8.
How can I get the right XFA file that MSXML SDK can load it?

Thanks!
Yun.

Here is the code I get the XFA:
AVDoc avDoc = AVAppGetActiveDoc();
PDDoc pdDoc = AVDocGetPDDoc(avDoc);
CosDoc csDoc = PDDocGetCosDoc(pdDoc);
CosObj obj,root,XFA,preamble;
root = CosDocGetRoot(csDoc);
if (CosDictKnownKeyString(root,"AcroForm"))
{
obj = CosDictGetKeyString(root,"AcroForm");
if (CosDictKnownKeyString(obj,"XFA"))
{
XFA = CosDictGetKeyString(obj,"XFA");
ASInt32 len = CosArrayLength(XFA);
CosObj item;
CFile file;
byte head[3];
file.Open("c:\\11.xml",CFile::modeCreate|CFile::mo deWrite);
head[0] = 0xEF;//for UTF-8
head[1] = 0xBB;
head[2] = 0xBF;
file.Write(head,3);
for (int i=0;i<len;i++) { item = CosArrayGet(XFA,i); if (CosObjGetType(item) == CosStream) { char *pbuff; int len = 0; CosReadBuffer(NULL,len,item);//get something from stream pbuff = new char[len]; CosReadBuffer(pbuff,len,item); file.Write(pbuff,len); delete pbuff; } } file.Close(); } }

[Leonard_Rosenthol@adobeforums.com]

Why are you writing anything in front of the content? you should just be extracting the stream(s) raw and using it - NO modifications.