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Re: GridBagLayout and cha

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  To: comp.lang.java.gui
Daniel Pitts wrote:
> Say I have the following code:
> 
> JPanel myPanel = new JPanel(new GridBagLayout());
> GridBagConstraints constaints = getConstraints();
> myPanel.add(new JLabel("Hello world"), constaints);
> 
> And then later (as a result of an Event), I do something like
> constraints.gridx = 3;
> myPanel.revalidate();
> 
> Will this have the expected effect, or do I need to remove the old
> label, and re-add it with the new constraints?

It wont have any affect. The constraints object is cloned. Indeed it is 
normal to use one constraints object to add many components.

To change the constraints for a component, just call 
LayoutManager[2].addLayoutComponent.

Tom Hawtin

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GridBagLayout and changin "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "Chris Smith" <chris.smith@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "Knute Johnson" <knute.johnson@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "Tom Hawtin" <tom.hawtin@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
    Re: GridBagLayout and cha "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "SadRed" <sadred@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
    Re: GridBagLayout and cha "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "SadRed" <sadred@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "Brandon McCombs" <brandon.mccombs@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
    Re: GridBagLayout and cha "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "Ian Wilson" <ian.wilson@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
    Re: GridBagLayout and cha "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "Larry Barowski" <larry.barowski@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000
  Re: GridBagLayout and cha "Larry Barowski" <larry.barowski@THRWHITE.remove-dii-this> - 2011-04-27 15:32 +0000

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