# How can I retrieve the .pdf file name from an OdDbPdfReference object?

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3. [PDF and PRC Questions](/faq/pdf-and-prc-questions)

Use the following code fragment as a sample:

```
OdDbObjectId idDefinition = pPdfRef->definitionId();
OdDbPdfDefinitionPtr pDef = idDefinition.openObject();
OdString strActiveFileName = pDef->activeFileName();
OdString strSourceFileName = pDef->sourceFileName();
```

This sample fragment assumes that the variable pPdfRef is a smart pointer to an instance of the OdDbPdfReference class, which has been correctly created and added to the drawing database.