我在应用程序中显示等待光标时遇到问题.只要鼠标位于定义自己光标的面板上方,就不会出现等待光标.如果面板未更改光标,则会出现等待光标.
我附上了SSCE来准确解释我的问题.
public class BusyCursorTest extends javax.swing.JFrame {
public BusyCursorTest() {
javax.swing.JMenuBar menuBar = new javax.swing.JMenuBar();
javax.swing.JMenu menu = new javax.swing.JMenu("Menu");
javax.swing.JMenuItem wait1 = new javax.swing.JMenuItem("Wait 100 ms");
javax.swing.JMenuItem wait2 = new javax.swing.JMenuItem("Wait 250 ms");
javax.swing.JMenuItem wait3 = new javax.swing.JMenuItem("Wait 500 ms");
javax.swing.JMenuItem wait4 = new javax.swing.JMenuItem("Wait 1000 ms");
menu.add(wait1);
menu.add(wait2);
menu.add(wait3);
menu.add(wait4);
menuBar.add(menu);
setJMenuBar(menuBar);
wait1.addActionListener(getActionListener(this, delayActionListener(100)));
wait2.addActionListener(getActionListener(this, delayActionListener(250)));
wait3.addActionListener(getActionListener(this, delayActionListener(500)));
wait4.addActionListener(getActionListener(this, delayActionListener(1000)));
cursorPanel = new javax.swing.JPanel();
cursorPanel.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseEntered(java.awt.event.MouseEvent e) {
cursorPanel.setCursor(java.awt.Cursor.getPredefinedCursor(java.awt.Cursor.CROSSHAIR_CURSOR));
}
public void mouseExited(java.awt.event.MouseEvent …似乎不可能修复Graphics2D缺少的代码,我必须设置动画的修复大小,否则一些开始外面的矩形490 x 490冻结或在屏幕上摇晃
我的SSCCE
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Random;
import java.util.Vector;
import java.util.regex.Pattern;
import javax.swing.*;
import javax.swing.table.*;
public class OneTwoThree implements Runnable {
private String testS;
private JFrame frame = new JFrame("frameTitle");
private JScrollPane tblS = new JScrollPane();
private JTable tbl;
private Vector<String> rOrH;
private long t1 = 0L;
private long t2 = 0L;
private AlphaChars aChars = new AlphaChars();
private GradientViewPortOriginal tableViewPort;
private JViewport viewport = new JViewport();
private Random random …我正在使用JInternalFrame我添加的内容JTable.现在我要显示背景图像JTable.所以我在JScrollPane's自定义代码中添加了以下代码.
jScrollPane1 = new javax.swing.JScrollPane(ViewBalanceReportTable) {{
setOpaque(false);
getViewport().setOpaque(false);
}
@Override
protected void paintComponent(Graphics g) {
final int imageWidth = image.getIconWidth();
final int imageHeight = image.getIconHeight();
final Dimension d = getSize();
final int x = (d.width - imageWidth)/2;
final int y = (d.height - imageHeight)/2;
g.drawImage(image.getImage(), x, y, null, null);
super.paintComponent(g);
}
}
但仍然没有显示背景图像任何人可以帮助我