我无法解决这个问题。我想要发生的是当我的鼠标悬停在"开始"菜单中的JButton
可以放大50-100像素。有什么方法可以使用我的代码?
提前致谢! "我正在使用java eclipse btw"不知道这是否有帮助
//START_Button
JButton button = new JButton("Start");
frame.pack();
JTextPane TEXT = new JTextPane();
BufferedImage buttonIcon;
try {
buttonIcon = ImageIO.read(new File("C:\\Users\\GOULDEN\\Desktop\\MENU_START.png"));
button = new JButton(new ImageIcon(buttonIcon));
button.setBorder(BorderFactory.createEmptyBorder());
button.setContentAreaFilled(false);
Container contentPane = frame.getContentPane();
contentPane.add(button);
button.setBounds(500,250,300,75);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
答案 0 :(得分:0)
实施MouseListener
并使用mouseEntered()
和mouseExited()
使您的按钮更大。
声明将在instance variables等其他方法中访问的变量,以便能够访问它们。
import java.awt.Cursor;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Demo extends JFrame implements MouseListener {
private static final long serialVersionUID = 1L;
private JButton startButton;
public Demo() {
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setBounds(100, 100, 500, 500);
this.setLayout(null);
startButton = new JButton("Start");
startButton= new JButton(new ImageIcon("path/to/image.jpg"));
startButton.setBorder(BorderFactory.createEmptyBorder());
startButton.setContentAreaFilled(false);
startButton.setBounds(1, 2, 100, 25);
startButton.setCursor(new Cursor(Cursor.HAND_CURSOR));
startButton.addMouseListener(this);
this.add(startButton);
this.setVisible(true);
}
public static void main(String[] args) {
new Demo();
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
startButton.setSize(400, 125);
this.repaint();
}
@Override
public void mouseExited(MouseEvent e) {
startButton.setSize(100, 25);
this.repaint();
}
}
顺便说一句,如果您不打算使用图片属性,则无需使用bufferedImage
,因此只需将图片位置直接插入ImageIcon
即可删除{{} 1}}阻止
try-catch
查看这些链接,详细了解您的示例中使用的主题。