## MailMerge::set_FieldMergingCallback method


Occurs during mail merge when a mail merge field is encountered in the document.

```cpp
void Aspose::Words::MailMerging::MailMerge::set_FieldMergingCallback(const System::SharedPtr<Aspose::Words::MailMerging::IFieldMergingCallback> &value)
```

## See Also

* Interface [IFieldMergingCallback](../../ifieldmergingcallback/)
* Class [MailMerge](../)
* Namespace [Aspose::Words::MailMerging](../../)
* Library [Aspose.Words for C++](../../../)