| clear_background () |
| default_hmotion (xdelta, ydelta) |
| default_hslider_update () |
| default_vmotion (xdelta, ydelta) |
| default_vslider_update () |
| draw_background () |
| draw_slider () |
| draw_step_back () |
| draw_step_forw () |
| draw_trough () |
| get_adjustment () |
| set_adjustment (adjustment) |
| set_update_policy (policy) |
| slider_update () |