Chain of graphicals displayed on the device. The first graphical is the
one that is entirely in the background; the last is entirely in the
foreground. See graphical->expose
and friends to change the stacking order of overlapping graphicals.
The contents of this chain may be queried but not changed. Use the
manipulation behaviour defined on devices and graphicals to change the
contents of the device. Note that the collection enumeration
methods
device->for_all
and device->for_some
are also available for devices. The following example changes the pen
thickness of all graphicals of a device to 2:
send(Device, for_some, @default,
message(@arg1, pen, 2)),
- See also
- - device
<-contains
- graphical-device
- device<-member
- device->for_some
- device->for_all
