lesson1_05_Graphics

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package gui_lesson_001;

import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

public class TestGraphics {

/**组件对象本身不能够提供绘图打印文件操作， getGraphics（）
* @param args
*/
public Frame f = new Frame("IT资讯");
public void init(){
  f.setSize(600, 800);
  f.setVisible(true);
     f.addWindowListener(new WindowAdapter() {
     public void windowClosing(WindowEvent e) {
    // TODO Auto-generated method stub
    e.getWindow().setVisible(false);
    e.getWindow().dispose();
    System.exit(0);
   }
  });



  f.addMouseListener(new MouseAdapter() {
  int orgx1;
  int orgy1;
  int orgx2;
  int orgy2;


  public void mousePressed(MouseEvent e){
   orgx1 = e.getX();
   orgy1 = e.getY();
   System.err.println("pressed");
  }

  public void mouseReleased(MouseEvent e){
     orgx2 = e.getX();
     orgy2 = e.getX();
     System.err.println("released");
     Graphics g = f.getGraphics();
     System.err.print(g);
     g.setColor(Color.red);

     //在GUI上打印文字
      g.drawString(new String(orgx1+","+orgy1), orgx1, orgy1);
      g.drawString(new String(orgx2+","+orgy2), orgx2, orgy2);

     g.drawLine(orgx1, orgy1, orgx2, orgy2);
  }

  });
}
public static void main(String[] args) {
   new TestGraphics().init();
}

}