The Top container
The
top container
is the panel containing the design grid. It is special in that you can
select
it only from the grid
or from the current layout's
.
If your exported layout extends
JPanel
, the
JPanel
constructed by the RADi runtime library
is
the top container.
If your exported layout extends
JFrame
,
JDialog
or
JApplet
, the top container will be added to the
ContentPane
.
If you define the
focus traversal policy
, you generally do this for the top container. As with internal panels, you can
display background images
for the top container.
See also:
The runtime library
Exporting layout classes
The tree view