Hi Dean Hunter,
To get buttons in toolbar redefine IF_BSP_WD_TOOLBAR_CALLBACK~GET_BUTTONS and code in to add buttons.
Try below code in .htm page of the table view to get the added buttons in Header Toolbar..
<thtmlb:toolbar id = "HeaderToolbar"
buttons = "<%= controller->gt_button %>"
maxButtonNumber = "5"
foreignUse = "TRUE" />
Regards,
Chiru