tuxin.java

该代码是利用三个滚动条来控制颜色的三原色

/*
 * Created on 2007-5-3
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/**
 * @author hulmous
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
import java.awt.*;
public class Tuxin  extends Frame{
	public Tuxin(String title){
		super(title);
		setLayout(new GridLayout(5,1));
		setVisible(true);
		setBounds(300,300,300,300);
		Panel p1=new Panel();
		TextField text=new TextField("0 0 0",20);
		Scrollbar sRed=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,256);
		Scrollbar sGreen=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,256);
		Scrollbar sBlue=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,256);
		add(p1);
		add(text);
		add(sRed);
		add(sGreen);
		add(sBlue);
		int nRed,nGreen,nBlue;
		while(true){
		nRed=sRed.getValue();
	    nGreen=sGreen.getValue();
		nBlue=sBlue.getValue();
		text.setText(nRed+" "+nGreen+" "+nBlue);
		Color c=new Color(nRed,nGreen,nBlue);
		p1.setBackground(c);
		}
	}
	public static void main(String[] args){
		Tuxin tuxing=new Tuxin("图形");
		tuxing.pack();
	}
}