Using Layout Data Objects to control layout : Layout Basics « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. Layout Basics

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class LayoutDataControlLayout {
  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);

    shell.setLayout(new GridLayout()); // Only with GridLayout you can use GridData
    Text text = new Text(shell, SWT.SINGLE|SWT.BORDER);
    text.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL));
    
    shell.setSize(450, 100);
    shell.open();

    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

The methods in the Control class to get and set layout data are:

public Object getLayoutData()
    public void setLayoutData(Object layoutData)

17.93.Layout Basics
	17.93.1.	Layouts
	17.93.2.	A few terms that are used frequently when discussing layouts
	17.93.3.	Setting Layouts
	17.93.4.	Using Layout Data Objects to control layout
	17.93.5.	Laying Out Children of a Composite
	17.93.6.	Layout term: bounds, client area