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用AcDbObjectPointer 类打开对象不必考虑close问题, AcDbObjectPointer pline (id, AcDb::kForRead);Ultimately the AcDbObjectPointer is calling acdbOpenAcDbObject() and close for you.
这是智能指针吧?
应该是吧. 关于acdbOpenAcDbEntity(), acdbOpenAcDbObject(), acdbOpenObject()讨论:
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