Print headings using RSBTCHH0 on ALV grids

Most reports I have developed use the list processing event top-of-page to print headings for the report listing by calling standard SAP subroutine BATCH-HEADING in program RSBTCHH0 when structure BHDGD has been populated. Field BHDGD-LINES contains the line size used for printing the report headings. When we use ABAP objects to print data in the ALV grid we can add the same processing to print page headings to event PRINT_TOP_OF_PAGE. It appears as if the heading data is printed until the position of last column of the grid before the text is wrapped, creating a new line. Is there anyway of controlling the default line-size when doing grid printing.

Thanks in advance

Colin