display_level - Display level

The display level allows hiding controls that do not correspond to the display level currently set. By default, the display level is set to 0. GUI elements having display level 0 are always visible. GUI elements defined with a display level greater than 0 will be displayed only, when their display level corresponds to the display level selected for the parent control.

Within the application, the display level might be changed calling the odabagui :: ControlContext ::displayLevel() function.