EVT_BUTTON(IDH_DLG_RASTERIZE, MainFrame::OnHelpButton)
EVT_BUTTON(IDH_DLG_PROJECTIONS, MainFrame::OnHelpButton)
EVT_BUTTON(IDH_DLG_RECONSTRUCTION, MainFrame::OnHelpButton)
EVT_BUTTON(IDH_DLG_RASTERIZE, MainFrame::OnHelpButton)
EVT_BUTTON(IDH_DLG_PROJECTIONS, MainFrame::OnHelpButton)
EVT_BUTTON(IDH_DLG_RECONSTRUCTION, MainFrame::OnHelpButton)