gridbaglayoutstep3.java

JAVA SE6 全方位学习 朱仲杰 编著 机械工业出版社出版

import java.awt.*;

public class GridBagLayoutStep3
{
	public static void main(String argv[])
	{
		Frame f = new Frame("GridBagLayout Step 3");
		f.setLayout(new GridBagLayout());

		int fill[] = { GridBagConstraints.BOTH,
			      	   GridBagConstraints.VERTICAL,
			      	   GridBagConstraints.HORIZONTAL,
			      	   GridBagConstraints.NONE };

		int anchor[] = { GridBagConstraints.CENTER,
						 GridBagConstraints.EAST,
						 GridBagConstraints.SOUTH,
						 GridBagConstraints.SOUTHEAST,
						 GridBagConstraints.SOUTHWEST,
						 GridBagConstraints.WEST,
						 GridBagConstraints.NORTH,
						 GridBagConstraints.NORTHEAST,
						 GridBagConstraints.NORTHWEST };

		int att[][] = { {0, 0, 1, 1, 1, 1, fill[3], anchor[8]}, 
						{1, 0, 1, 1, 0, 0, fill[1], anchor[0]}, 
						{2, 0, 1, 1, 1, 1, fill[3], anchor[7]},
						{0, 1, 3, 1, 0, 0, fill[2], anchor[0]} };

        Button b[] = new Button[4];
		for (int i=0; i<b.length; i++)
		{
			b[i] = new Button("Button "+(i+1));
			add(f, b[i], att[i]);
		}

		f.pack();
		f.setVisible(true);
	}

	private static void add(Container con, Component com, int att[])
	{
		GridBagConstraints cons = new GridBagConstraints();
		cons.gridx = att[0];
		cons.gridy = att[1];
		cons.gridwidth = att[2];
		cons.gridheight = att[3];
		cons.weightx = att[4];
		cons.weighty = att[5];
		cons.fill = att[6];
		cons.anchor = att[7];

		con.add(com, cons);
	}
}