JScrollPane中的JTable,如何设置背景? [英] JTable in JScrollPane, how to set background?

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问题描述

我使用 JScrollPane 来包装 JTable 。根据配置,有一些空间未被表占用。它是灰色的(看起来它是透明的,你可以看到后面的组件)。 如何将此区域设置为某种颜色?

I am using a JScrollPane to wrap a JTable. Depending on the configuration, there is some space that is not occupied by the table. It is drawn gray (it looks like it is transparent and you can just see the component in the back). How can I set this area to be a certain color?

这是一个SSCCE来说明。

Here is a SSCCE to illustrate.

import java.awt.Color;
import java.util.Vector;

import javax.swing.JDialog;
import javax.swing.JScrollPane;
import javax.swing.JTable;

public class DialogDemo extends JDialog {
    public static void main(final String[] args) {
        final DialogDemo diag = new DialogDemo();
        diag.setVisible(true);
    }

    public DialogDemo() {
        super();
        setTitle("SSCCE");

        final Vector<Vector<String>> rowData = new Vector<Vector<String>>();
        final Vector<String> columnNames = new VectorBuilder<String>().addCont("Property").addCont("Value");
        rowData.addElement(new VectorBuilder<String>().addCont("lorem").addCont("ipsum"));
        rowData.addElement(new VectorBuilder<String>().addCont("dolor").addCont("sit amet"));
        rowData.addElement(new VectorBuilder<String>().addCont("consectetur").addCont("adipiscing elit."));
        rowData.addElement(new VectorBuilder<String>().addCont("Praesent").addCont("posuere..."));

        final JTable table = new JTable(rowData, columnNames);
        JScrollPane pane = new JScrollPane(table);

        // ************* make that stuff white! *******************
        table.setBackground(Color.white);
        table.setOpaque(true);
        pane.setBackground(Color.white);
        pane.setOpaque(true);
        // ************* make that stuff white! *******************

        add(pane);
        pack();

        setLocationRelativeTo(null);
        setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
    }

    class VectorBuilder<T> extends Vector<T> {
        public VectorBuilder<T> addCont(final T elem) {
            addElement(elem);
            return this;
        }
    }
}

在这里你可以看到区域,我想着色。在SSCCE中,我尝试通过使用表的 setOpaque(boolean) setBackgroundColor(Color)来做到这一点滚动窗格,但没有成功。

And here you can see the area, which I want to "colorize". In the SSCCE, I try to do that by using setOpaque(boolean) and setBackgroundColor(Color) of the table and scroll pane, with no success.

你能告诉我,我做错了吗?

Can you tell me, what I am doing wrong?

推荐答案

而不是:

table.setBackground(Color.white);
table.setOpaque(true);
pane.setBackground(Color.white);
pane.setOpaque(true);

致电:

pane.getViewport().setBackground(Color.WHITE);

这篇关于JScrollPane中的JTable,如何设置背景?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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