Gets the accumulative preferred height for all rows which have been requested with this context.
After gtk.cell_area_context.CellAreaContext.reset is called and/or before ever requesting the size of a #GtkCellArea, the returned values are 0.
location to store the minimum height, or null
location to store the natural height, or null
Gets the accumulative preferred height for all rows which have been requested with this context.
After gtk.cell_area_context.CellAreaContext.reset is called and/or before ever requesting the size of a #GtkCellArea, the returned values are 0.