frame1.java

来自「Jbuilder100个例子 都是经典例子 对大家学习Jbuilder非常有帮助」· Java 代码 · 共 52 行

package scrollbar;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Frame1 extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();
  Scrollbar scrollbar1 = new Scrollbar();
  Label label1 = new Label();

  /**Construct the frame*/
  public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setResizable(false);
    this.setSize(new Dimension(228, 88));
    this.setTitle("滚动条演示程序");
    scrollbar1.setOrientation(0);
    scrollbar1.addAdjustmentListener(new java.awt.event.AdjustmentListener() {
      public void adjustmentValueChanged(AdjustmentEvent e) {
        scrollbar1_adjustmentValueChanged(e);
      }
    });
    label1.setText("滚动条当前的value值为：0");
    contentPane.add(scrollbar1, BorderLayout.SOUTH);
    contentPane.add(label1, BorderLayout.CENTER);
  }
  /**Overridden so we can exit when window is closed*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void scrollbar1_adjustmentValueChanged(AdjustmentEvent e) {
label1.setText("滚动条当前的value值为："+scrollbar1.getValue());
  }
}