scrollpanedemo_gui.java

来自「JAVA程序设计课程中各章节的程序实例。」· Java 代码 · 共 44 行

/**
*A simple scroll panel program in GUI
*2004.11.27. xhcprince
*Pay attention,it's not ScrollPanel, but ScrollPane!Without 'l' at last!
*/
import java.awt.*;
import java.applet.*;

public class scrollpaneDemo_GUI extends Applet
{
	private canvas A;
	private ScrollPane B;

	public void init()
	{
		A = new canvas(300,160);
		B = new ScrollPane(ScrollPane.SCROLLBARS_ALWAYS);
		
		B.add(A);
		this.add(B);
	}
}

class canvas extends Canvas
{
	protected canvas(int width, int height)
	{
		super();
		this.setSize(width,height);
	}

	public void paint(Graphics g)
	{
		int width = this.getBounds().width;
		int height = this.getBounds().height;

		g.drawString("I will be tall!\n",150,80);
		g.drawLine(height,0,0,width);
	}
}
/*
<applet code = "scrollpaneDemo_GUI.class" width = 600 height = 600>
</applet>
*/