CellArea.foreachAlloc

void foreachAlloc(gtk.cell_area_context.CellAreaContext context,  gtk.widget.Widget widget,  gdk.rectangle.Rectangle cellArea,  gdk.rectangle.Rectangle backgroundArea,  gtk.types.CellAllocCallback callback)

Calls callback for every gtk.cell_renderer.CellRenderer in area with the allocated rectangle inside cell_area.

Parameters

`context`	the gtk.cell_area.CellAreaContext for this row of data.
`widget`	the gtk.widget.Widget that area is rendering to
`cellArea`	the widget relative coordinates and size for area
`backgroundArea`	the widget relative coordinates of the background area
`callback`	the gtk.types.CellAllocCallback to call