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Topic: Remove an image element from pdf
Conf: (P-PDF) Developers, Msg: 115759
From: chenkan99
Date: 7/20/2004 02:42 PM

I write a acrobat plug-in by Acrobat 5.0 SDK.
The plug-in has a selection server.I can remove an image element in my AVDocSelectionDeleteProc.But when I save the pdf, acrobat report an error, and I can't open it ever. I have tried to delete the image element by Acrobat Touch Up Object Tool, it's ok. what wrong in my code?

static ACCB1 ASBool ACCB2 SelectionServerDeleteSelection(AVDoc doc, void* selData) { SealSelection selection = (SealSelection)selData;

AVPageView pageView = NULL;
PDDoc pdDoc = NULL;
PDPage pdPage = NULL;
PDEElement pdeElement = NULL;
PDEContent pdeContent = NULL;
CSealInfo* pSealInfo = NULL;
bool bDeleted = false;

DURING
pdDoc = AVDocGetPDDoc(doc);
pageView = AVDocGetPageView(doc);
int pageNum = AVPageViewGetPageNum(pageView);
pdPage = PDDocAcquirePage(pdDoc, pageNum);
pdeContent = PDPageAcquirePDEContent(pdPage, gExtensionID);
ASInt32 numElems = PDEContentGetNumElems(pdeContent);

for(ASInt32 i = 0; i < numElems; i++)
{
pdeElement = PDEContentGetElem(pdeContent, i);
if (PDEObjectGetType((PDEObject)pdeElement) == kPDEImage)
{
char name[SMALL_BUFFER_SIZE];
CosObj stream;
PDEImageGetCosObj((PDEImage)pdeElement, &stream);
CosObj dict = CosStreamDict(stream);
CosObj nameCosObj = CosDictGet(dict, ASAtomFromString("Name"));
ASInt32 len;
CosStringValueSafe(nameCosObj, name, SMALL_BUFFER_SIZE, &len);
name[len] = '\0';

pSealInfo = CSealInfo::ParseInfo(name);
if( (NULL != pSealInfo) && pSealInfo->compare(*(selection->seal)) ) // delete it
{
// Clear selection and redraw
AVDocClearSelection(doc, true);
AVPageView pageView = AVDocGetPageView(doc);
AVPageViewInvalidateRect(pageView, NULL);
AVPageViewDrawNow(pageView);

// delete element of seal from pdf
PDEContentRemoveElem(pdeContent, i);
ASBool ret = PDPageSetPDEContent(pdPage, gExtensionID);
PDPageNotifyContentsDidChange(pdPage);

bDeleted = true;
delete pSealInfo;
break;
}

if( NULL != pSealInfo )
delete pSealInfo;
}
}
HANDLER
char errorBuf[256];
ASGetErrorString(ASGetExceptionErrorCode(), errorBuf, 256);
AVAlertNote (errorBuf);
END_HANDLER

PDPageRelease(pdPage);
if (pdeContent)
PDPageReleasePDEContent(pdPage, gExtensionID);

return bDeleted;
}



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