CAD crash when setCurDocument(pDoc)

27925916 — Wed, 21 Apr 2021 02:46:44 GMT

when I write the ARX project depends on the library compiled by VS2019, I use code below,it will crash on code"SetCurDocument" only on CAD 2017 and later , it works ok on CAD2016 and older.

crash tooltip: "Exception thrown at 0x00007FF77A4AD148 (in acad.exe): 0xC0000005: An access violation occurred while reading location 0x0000000000000010. "

AcApDocumentIterator *pDocItr = acDocManagerPtr()->newAcApDocumentIterator(); for (; !pDocItr->done(); pDocItr->step()) { AcApDocument *pDoc = pDocItr->document(); acDocManager->setCurDocument(pDoc);// CAD crash on this code line "" XXX.... }

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CAD crash when setCurDocument(pDoc)