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Grid Layout Complex

//Send questions, comments, bug reports, etc. to the authors: //Rob Warner (rwarner@interspatial.com) //Robert Harris (rbrt_harris@yahoo.com) import org.eclipse.swt.widgets.*; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.SWT; public class GridLayoutComplex {   public static void main(String[] args) {     Display display = new Display();     Shell shell = new Shell(display);     GridLayout layout = new GridLayout();     layout.numColumns = 3;     layout.makeColumnsEqualWidth = true;     shell.setLayout(layout);     // Create the big button in the upper left     GridData data = new GridData(GridData.FILL_BOTH);     data.widthHint = 200;     Button one = new Button(shell, SWT.PUSH);     one.setText("one");     one.setLayoutData(data);     // Create a composite to hold the three buttons in the upper right     Composite composite = new Composite(shell, SWT.NONE);     data = new GridData(GridData.FILL_BOTH);     data.horizontalSpan = 2;     composite.setLayoutData(data);     layout = new GridLayout();     layout.numColumns = 1;     layout.marginHeight = 15;     composite.setLayout(layout);     // Create button "two"     data = new GridData(GridData.FILL_BOTH);     Button two = new Button(composite, SWT.PUSH);     two.setText("two");     two.setLayoutData(data);     // Create button "three"     data = new GridData(GridData.HORIZONTAL_ALIGN_CENTER);     Button three = new Button(composite, SWT.PUSH);     three.setText("three");     three.setLayoutData(data);     // Create button "four"     data = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);     Button four = new Button(composite, SWT.PUSH);     four.setText("four");     four.setLayoutData(data);     // Create the long button across the bottom     data = new GridData();     data.horizontalAlignment = GridData.FILL;     data.grabExcessHorizontalSpace = true;     data.horizontalSpan = 3;     data.heightHint = 150;     Button five = new Button(shell, SWT.PUSH);     five.setText("five");     five.setLayoutData(data);     shell.pack();     shell.open();     while (!shell.isDisposed()) {       if (!display.readAndDispatch()) {         display.sleep();       }     }     display.dispose();   } }