how to set the "background selection color" of a Combobox

[Axel Janssen]

Hi,
the default lavender color bites with windows desktop colors. But how to set this color?
I mean the highlighting color when you scroll through the combobox.
Am hovering over the colors of good-looking eclipse guis with a colorpicker and use those colors in my gui. It seems to work.
regards Axel
[ July 15, 2003: Message edited by: Axel Janssen ]

[Thomas Suer]

A good place to take a look at is
Swing Examples
For your problem you should keep an eye on the UIManager and its lookup table. For instance you could make the following invocation at startup of your app (that is before anything is displayed):

UIManager.put("ComboBox.selectionBackground", Color.yellow);

or at runtime you do the same stuff and additionally do an

updateUI()

on the desired combo box. The last step is necessary to update the already instantiated combo box.
This should work

[Axel Janssen]

Hallo Thomas,
(my own findings so far...)
I've learnt now that the easiest way to change the color of the items in the combobox is to implement a own ListCellRenderer and then setRenderer (MyListCellRenderer).
Next problem is to change the color of the ScrollPane. The JList automatically embedded in the JComboBox is bound to a ScrollPane.
Now to change this ScrollPane color the only viable solutions seems to be (as you said) using UIManager.put() method.
I've sorted and printed all the keys of UIManager.getDefaults().
But what's the key to that ScrollPane inside of JComboBox? There seems to be no special key. I am going to try ScrollPane trees.
JComboBox sucks.
Axel

[Axel Janssen]

works with UIManager keys of ScrollBar.
One question: How is key of the two Arrays on top and on bottom?
Can't find that key.

[Sandra Stone]

Don't know if this will help, but anyway:
I was able to change the color of the "arrow-buttons" of a scrollbar in the JScrollPane this way:

Component[] comps = myScrollPane.getVerticalScrollbar().getComponents();
for(int i=0;i<comps.length;i++)
comps[i].setBackground(Color.xxx);

This colored the "arrow buttons", but not the slide itself, and not the "knob" (or "thump" or whatever it is called)

Regards...

[Sandra Stone]

... And by the way, I was also able to change color of the "arrow button" in a JComboBox the same way.