主题：页脚设置

Dim tb  As WinForm.TabControl = e.Form.Controls("TabControl1")
Dim pg  As WinForm.TabPage = tb.SelectedPage
Dim doc  As PrintDoc = e.Form.GernatePrintDoc(pg)
doc.Preview()

求救，这种打印方式怎样设置一个页脚，谢谢！