Aspose::Words::MailMerging::IFieldMergingCallback interface. Implement this interface if you want to control how data is inserted into merge fields during a mail merge operation in C++....Ctrl K Aspose::Words::MailMerging::IFieldMergingCallbac interface...FieldMerging (System::SharedPtr<Aspose::Words::MailMerging::FieldMergingArgs>)...