Aspose::Words::Drawing::SignatureLine::get_ProviderId method. Gets or sets signature provider identifier for this signature line. Default value is "{00000000-0000-0000-0000-000000000000}" in C++....docx" ); auto shape = System :: ExplicitCast < Shape > ( doc ->...NodeType :: Shape , 0 , true )); signatureLine = shape -> get_SignatureLine...