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To add multiple controls

To add multiple controls, create a composite, add the controls to the composite, and pass the composite to the cool item's setControl() method. import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.CoolBar; import org.eclipse.swt.widgets.CoolItem; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class CoolBarComposite {   public static void main(String[] args) {     Display display = new Display();     Shell shell = new Shell(display);     CoolBar coolBar = new CoolBar(shell, SWT.BORDER);     coolBar.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));     final CoolItem item = new CoolItem(coolBar, SWT.DROP_DOWN);     Composite c = new Composite(coolBar, SWT.NONE);     c.setLayout(new GridLayout(1, false));     new Button(c, SWT.PUSH).setText("Button One");     new Button(c, SWT.PUSH).setText("Button Two");     item.setControl(c);     Control control = item.getControl();     Point pt = control.computeSize(SWT.DEFAULT, SWT.DEFAULT);     pt = item.computeSize(pt.x, pt.y);     item.setSize(pt);     coolBar.pack();     shell.open();     while (!shell.isDisposed()) {       if (!display.readAndDispatch())         display.sleep();     }     display.dispose();   } }