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Author

JComboBox: Opaque problem

Gene Kaplun
Greenhorn

Joined: May 03, 2001
Posts: 4
Does anybody know why, when I setOpaque(false) to the renderer of my JComboBox, the selection works wrong(selected row is completely white). I tried to set Background and Foreground color - didn't work. Actually, setting the Foreground to black is fine, but in that case the selected row Background doesn't work.
Thanks in advance.
San Su
Ranch Hand

Joined: Jul 06, 2001
Posts: 313
> renderer of my JComboBox,
renderer of JComboBox ? AFAIK, there is no renderer in JComboBox. Can you please explain in detail ? Are you talking about JTable ?

[This message has been edited by Sankar Subbiah (edited July 09, 2001).]
Gene Kaplun
Greenhorn

Joined: May 03, 2001
Posts: 4
Sankar,
Thanks for your response. Here is my code:
public class LabelTypeComboBox extends ClearableComboBox{
public LabelTypeComboBox(){
super();
setRenderer(new DefaultListCellRenderer() {
public Component getListCellRendererComponent(
JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus){
DefaultListCellRenderer defRend = (DefaultListCellRenderer)super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
//defRend.setOpaque(false);
return defRend;
}
});
I checked the bug database on the Sun. They say that some L&F don�t support setting �Opaque� property of the JcomboBox to False, yet I have a problem only with this particular ComboBox. All others work fine having the same renderers. When Opaque is true the selection works fine whereas my cool combobox's header ( I have moderntheme L&F) gets replaced by a regular white rectangle. If I change Opaque to false the header of the combobox looks fine, but list selection uses white background color and the selected line becomes invisible. I tried to change the Background and Foreground color. Doesn't work.
Thanks again.
San Su
Ranch Hand

Joined: Jul 06, 2001
Posts: 313

How did i miss "setRenderer" method...
Gene Kaplun, I will try this today evening and let you know
the result.
Gene Kaplun
Greenhorn

Joined: May 03, 2001
Posts: 4
Sankar,
Thanks a lot for your concern. I found the solution.
setOpaque(isSelected ? true : false);
Best regards,
Gene
 
Don't get me started about those stupid light bulbs.
 
subject: JComboBox: Opaque problem
 
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