AcDbTable::insertRowsAndInherit

Acad::ErrorStatus insertRowsAndInherit(
    int nIndex, 
    int nInheritFrom, 
    int nNumRows
);

This function inserts the specified number of new rows into the table at the row index row.

Returns Acad::eOk if successful. Otherwise, returns Acad::eInvalidInput.

Parameters	Description
row	Input integer specifying the zero-based row index for the cell
height	Input height for the inserted rows
nRows	Input number of rows to insert