How heavy is a JPanel?

[Timasmith]

In terms of performance not pounds, when it comes to layout managers,
resources et al.

As an example I want to have a comboxbox and an elipsis ... button
treated as a single control.

If I use a JPanel + BorderLayout with a combobox using the 'Center' and
the button the 'East'

[________] [...]

To make it look good I dont want the button to take up the entire East,
rather be laid out in a 'Flowlayout' fashion. To achieve this I need
to add an extra JPanel.

Will that add much overhead if I have forms with 10-20 comboboxes
routinely displayed?

 

[Michael Rauscher]

As an example I want to have a comboxbox and an elipsis ... button
treated as a single control.

If I use a JPanel + BorderLayout with a combobox using the 'Center' and
the button the 'East'

[________] [...]

To make it look good I dont want the button to take up the entire East,
rather be laid out in a 'Flowlayout' fashion. To achieve this I need
to add an extra JPanel.

No, you need not. You simply need another LayoutManager. Try JGoodies
FormsLayout e.g.

Will that add much overhead if I have forms with 10-20 comboboxes
routinely displayed?

Sure, but I'm unsure if you can see or feel this overhead while running

Bye
Michael

 

[Peter Van Weert]

Michael Rauscher schreef:

Sure, but I'm unsure if you can see or feel this overhead while running

I agree with Michael. It's like another Michael once said (no, no, not
that one...):

"The First Rule of Program Optimization: Don't do it. The Second Rule of
Program Optimization (for experts only!): Don't do it yet."
- Michael A. Jackson

CHeeRs,
Peter

 

[Fred Kleinschmidt]

In terms of performance not pounds, when it comes to layout managers,
resources et al.

As an example I want to have a comboxbox and an elipsis ... button
treated as a single control.

If I use a JPanel + BorderLayout with a combobox using the 'Center' and
the button the 'East'

[________] [...]

To make it look good I dont want the button to take up the entire East,
rather be laid out in a 'Flowlayout' fashion. To achieve this I need
to add an extra JPanel.

Will that add much overhead if I have forms with 10-20 comboboxes
routinely displayed?

The easiest way to do this is to write your own EllipsisCombo component,
extending JPanel, and containing a JComboBox and a JButton that you
place explicitly.