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package Jcd; // -- Listing-2 -- Form.java // 1
// 2
import java.awt.*; // 3
// 4
public class Form extends Frame { // 5
// 6
// Subclass the AWT GridBagLayout Frame by adding
// methods to set up placement constraints.
// 9
public GridBagLayout layout; // 10
// 11
protected Insets formInsets=new Insets(1,1,1,1);
// 13
public Form(String title) // 14
{ // 15
super(title); // 16
layout = new GridBagLayout(); // 17
setLayout(layout); // 18
} // 19
// 20
public Component addCenter(Component comp) // 21
{ // 22
int fill = GridBagConstraints.NONE; // 23
Insets insets = formInsets; // 24
GridBagConstraints c=new GridBagConstraints();
c.gridx = 0; // 26
c.gridy = GridBagConstraints.RELATIVE; // 27
c.anchor = GridBagConstraints.CENTER; // 28
c.gridwidth = GridBagConstraints.REMAINDER;
c.fill = fill; // 30
c.insets = insets; // 31
layout.setConstraints(comp, c); // 32
return super.add(comp); // 33
} // 34
} // 35
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