我们可以通过 Java Swing 来改变光标吗?


是的,我们可以更改 Java 中的默认光标表示。我们首先创建一个按钮组件 -

JButton button = new JButton("Button with two borders");

每当用户将鼠标光标停留在上述按钮组件上时,光标就会更改为手形光标 -

Cursor cursor = button.getCursor();
button.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));

以下是一个更改光标的示例 -

示例

package my;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Cursor;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.border.Border;
import javax.swing.border.EtchedBorder;
import javax.swing.border.LineBorder;
import javax.swing.border.TitledBorder;
public class SwingDemo {
   public static void main(String args[]) {
      JFrame frame = new JFrame("Demo");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      Border raisedBorder = new EtchedBorder(EtchedBorder.RAISED);
      LineBorder lineBorder = new LineBorder(Color.red);
      TitledBorder titleBorder = new TitledBorder("Demo Title");
      Border border = BorderFactory.createCompoundBorder(lineBorder, titleBorder);
      JButton raisedButton = new JButton("Raised Border");
      raisedButton.setBorder(raisedBorder);
      JButton button = new JButton("Button with two borders");
      button.setBorder(border);
      Cursor cursor = button.getCursor();
      button.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
      Container contentPane = frame.getContentPane();
      contentPane.add(raisedButton,BorderLayout.WEST);
      contentPane.add(button,BorderLayout.EAST);
      frame.setSize(600, 300);
      frame.setVisible(true);
   }
}

输出

输出如下。当您将光标停留在具有两个边框的按钮上时,则手形光标将如下所示可见 -

更新日期:30-Jul-2019

1K+ 浏览量

开始你的 职业

完成教程以获得认证

开始
广告