mi_lvarchar *mi_new_var(data_len)
mi_integer data_len;
The mi_new_var( ) function is a constructor function for a varying-length structure. It allocates a varying-length structure with data_len bytes of data in its data portion. The function allocates memory for the varying-length structure that it returns. Therefore, you must use the mi_var_free( ) function to free this structure when it is no longer needed.
The mi_new_var( ) function allocates a new varying-length structure with the current memory duration.
See also the descriptions of mi_get_vardata( ), mi_get_vardata_align( ), mi_get_varlen( ), mi_lvarchar_to_string( ), mi_set_vardata( ), mi_set_vardata_align( ), mi_set_varlen( ), mi_string_to_lvarchar( ), mi_var_copy( ), and mi_var_free( ).