PDEContentGetAttrs returns zero attributes

Question

Hi,
I'm currently in the process of adjusting a plugin written with Acrobat SDK 8.0 to Acrobat SDK 10.0 (X).
All goes well but I'm stuck on something very annoying...
In order for the plugin to parse the contents of the current page there is the following code:
PDEContent pdeContent= PDPageAcquirePDEContent(page, gExtensionID); //Gets the content of the page
parsePageObjects(pdeContent); //Parse the content of the page - this caches some objects in-memory for later use (this function is recursive).
PDPageReleasePDEContent(page, gExtensionID); //Releases the aquired contents of the page, no need for it anymore after parsing the contents
First question:
1) I did not find any reference to the API calls: PDPageAcquirePDEContent & PDPageReleasePDEContent. Although they are documented in the Acrobat 9.0 SDK manuals, I did not find anything mentioning these calls in the X SDK. They seem to be working (no errors, no crashes etc.). Are these function calls still relevant in SDK X? If not - maybe the next described issue is a side effect of these "old" (?) calls.
In the parsePageObjects method the content stream of the page is being parsed. All goes well, but for some reason when the current PDEElement is a form (/Type /XObject /Subtype /Form), after extracting the form's content's stream, the call to PDEContentGetAttrs populates the attrs structure with ZEROs.
For example:
void parsePageObjects(const PDEContent& pdeContent) //Receives the page contents
     int numElems = PDEContentGetNumElems(pdeContent); //Get number of elements in the contents
     for (int j=0; j < numElems; j++)
      PDEElement pdeElement = PDEContentGetElem(pdeContent, j); // get the current element
      PDEType type=(PDEType)PDEObjectGetType((PDEObject) pdeElement); //Get the element type
      switch(type)
       case kPDEForm: //In case the element is a Form XObject
          PDEContent fc=PDEFormGetContent((PDEForm)pdeElement); //Get the Form's content
          PDEContentAttrs attrs; //Declare an Attrs struct to be filled by the next call to GetAttrs
          PDEContentGetAttrs(fc,&attrs,sizeof(PDEContentAttrs)); //Fills the attrs structure with the data
After the last API call (PDEContentGetAttrs), the attrs structure is filled with ZEROs (like after memset(&attrs, 0, sizeof(attrs))). Even the forms matrix is all ZERO's.
For example: this is the dictionary (without the content stream) of a Form XObject which it's attrs are returned as ZERO, although the matrix & bbox are non zero:
20 0 obj
<<
    /Type /XObject
    /BBox   [ 0.000000 110.880000 252.000000 252.000000]
    /Filter   [/FlateDecode]
    /FormType 1
    /Length 5682
    /Matrix[ 1 0 0 1 -0.000000 -110.880000]
    /Name /Frm2
    /Resources 19 0 R
    /Subtype   /Form
>>
stream
endstream
endobj
Other questions:
1) Why does the attrs return filled with zeros although the object is 100% valid?
2) Why is this working perfectlly on Acrobat SDK 8.0 only (when compiling with Acrobat 9.0 SDK - the behaviour is not consistent. The attrs can retun as a valid value or zeros)?
3) How can I make it wok with Acrobat X SDK?
Thanks,
Omri

Answer 1

For this level of support, you REALLY need to open a formal support case
with our Developer Support staff.